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EV6240
Evaluation Kit User Manual
UM6240/3 January 1999 Advance Information
1.0
* * * *
Features
CMX624/CMX644A Product Evaluation Single device Calling and Answer mode tests Single or Dual device operation for BER tests and general evaluation
* * * * *
Selectable 2 or 4 wire line interfacing AT Command compatible firmware controlled via PC terminal emulator On-Board PIC programming via serial interface and PC software Socketed components and links for circuit adjustment Opto-Isolated serial interface capability
2-wire line Ring detect circuitry and OptoMOS Hook relays * Socketed space for optional Telcospecific components
1.1
Brief Description
The EV6240 Evaluation Kit comprises a single board containing two CMX624 or CMX644A devices, line interface components, PIC C with serial communications port for PC interfacing. A reduced AT command set is used to communicate with the evaluation board via standard terminal emulators. The board is powered from a single 8-24V dc power supply; an on board regulator and two discrete components set VDD to provide 3.3Volt or 5Volt operation. LED's indicate device interrupts, carrier detect and hook relay status. The CMX6x4 devices may be driven from an external clock, or from their own crystal oscillator. Important signals can be monitored via test points. The CMX6x4 devices are socketed for easy replacement. A user prototyping area is provided. On-board miniature switches allow the user to select the required line interface and appropriate evaluation device crystal. The CMX6x4 supply currents may be measured by removing jumpers. Where components are telco-specific (line impedance, line protection, etc.) space is provided for the user to add appropriate components. The EV6240 PCB is suitable for CMX624 and CMX644A evaluation.
(c) 1999 Consumer Microcircuits Limited
Evaluation Kit for CMX624/CMX644A
EV6240
CONTENTS Section Page
1.0 Features ......................................................................................................1 1.1 Brief Description.........................................................................................1 1.2 Preliminary Information .............................................................................4 1.2.1 Laboratory Equipment ................................................................4 1.2.2 Handling Precautions .................................................................4 1.2.3 Approvals ....................................................................................4 1.3 Quick Start ..................................................................................................5 1.3.1 Setting-Up....................................................................................5 1.3.2 Adjustments ................................................................................5 1.3.3 Operation.....................................................................................5 1.4 Signal Lists .................................................................................................6 1.5 Circuit Schematics and Board Layouts...................................................11 1.6 Detailed Description .................................................................................16 1.6.1 Hardware Description ...............................................................16 1.6.2 Adjustments and Controls.......................................................18 1.6.3 Firmware Description..............................................................18 1.6.4 Software Description ................................................................28 1.6.5 Evaluation Tests........................................................................30 1.6.6 Additional Information..............................................................34 1.7 Performance Specification.......................................................................45 1.7.1 Electrical Performance..............................................................45
Note:
As this product is still in development, it is likely that a number of changes and additions will be made to this specification. Items marked TBD or left blank will be included in later issues.
2 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Power Supply
Optional Isolation Power Supply
J1
J8 J2
EV6240
IBM-PC
RS232 Cable
Modem 1
Modem 2
J3
J4
J5
J6
Telephone/Modem Simulator
Figure 1 Block Diagram
3 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.2
1.2.1
Preliminary Information
Laboratory Equipment The following laboratory equipment is needed to use this evaluation kit:
1.2.1.1 8-24V dc Power Supply 1.2.1.2 An IBM compatible PC; 66MHz `486 or better, running Microsoft WindowsTM '95/NT. The reprogramming software supplied (PICPROGB.EXE) runs most efficiently under DOS and cannot be used with Windows NT.
1.2.2
Handling Precautions Like most evaluation kits, this product is designed for use in office and laboratory environments. The following practices will help ensure its proper operation.
1.2.2.1 Static Protection This product uses low power CMOS circuits which can be damaged by electrostatic discharge. Partially damaged circuits can function erroneously, leading to misleading results. Observe ESD precautions at all times when handling this product. 1.2.2.2 Contents - Unpacking Please ensure that you have received all of the items on the separate information sheet (EK6240) and notify CML within 7 working days if the delivery is incomplete. 1.2.3 Approvals This Evaluation Kit is not approved for direct or indirect connection to any public telecommunication system. Users are advised to observe local statutory requirements which may apply to this product.
4 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.3
Quick Start
This section provides instructions for users who wish to experiment immediately with the evaluation kit. A fuller description of the kit and its use appears later in this document.
1.3.1
Setting-Up THE EV6240 COMES PRE-CONFIGURED WITH TWO CMX624 EVALUATION DEVICES FOR OPERATION AT 5.0 VOLTS OVER A 2-WIRE LINE AND TO BE CONTROLLED VIA A NONISOLATED PC INTERFACE. RJ11 (US style) phone jacks are provided for 2-wire and 4-wire connections. Power is connected via the two-way socket, J1. Attach the 9-way RS232 cable between connector J2 and the serial port of the PC. Connect a line simulator/external modem via one of the 2-wire line RJ11 connectors.
1.3.2
Adjustments No board adjustments are required by the user. required. Telco-specific components may be added, as
1.3.3
Operation Each Modem is provided with an off-hook dc load, R20 (Modem One) and R48 (Modem Two). The factory-fitted value is 2k2 so that line simulators know when the modem has gone off hook. This resistor may be removed or an alternative value substituted. Line impedance (ac) matching is provided by T1, R26 (Modem One) and T4, R54 (Modem Two). The modems are controlled by the AT command set, described in Section 1.6.3, by running a terminal emulator program on the host PC. A suitable emulator is the `Hyper Terminal' program which operates under Windows '95 or NT systems. There are two modes of operation for the Evaluation Kit: Modem Mode allows one of the evaluation board modems to perform calling, answering and simple data transfer with a line simulator or external third party modem (not supplied). Test Mode allows diagnostic and performance tests to be made on Modem One and/or Modem Two.
5 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.4
Signal Lists
CONNECTOR PINOUT
Connector Ref. J1
Connector Pin No. 1 2
Signal Name VIN VSS DCD TXD RXD DTR VSS2 DSR RTS CTS A B TXA TXB RXA RXB A B TXA TXB RXA RXB -
Signal Type Power Power Output Output Input Input Power Output Input Output BI BI Output Output Input Input BI BI Output Output Input Input -
Description +ve power from external power supply. 0V power from external power supply. Linked to DTR. Connection to PC Receive Data Line (RD). Connection to PC Transmit Data Line (TD). Connection to PC Data Terminal Ready (DTR). Connection to PC 0V common. Linked to DTR. Connection to PC Request To Send. (RTS) Connection to PC Clear To Send (CTS). Not used. No connection needed. MODEM 1 Not used. No connection needed. MODEM 1 Bidirectional 2-wire line (A=TIP) MODEM 1 Bidirectional 2-wire line (B=RING) MODEM 1 Not used. No connection needed. MODEM 1 Not used. No connection needed. MODEM 1 4-wire line Tx output A. MODEM 1 4-wire line Tx output B. MODEM 1 4-wire line Rx input A. MODEM 1 4-wire line Rx input B. MODEM 1 Not used. No connection needed. MODEM 2 Not used. No connection needed. MODEM 2 Bidirectional 2-wire line (A=TIP) MODEM 2 Bidirectional 2-wire line (B=RING) MODEM 2 Not used. No connection needed. MODEM 2 Not used. No connection needed. MODEM 2 4-wire line Tx output A. MODEM 2 4-wire line Tx output B. MODEM 2 4-wire line Rx input A. MODEM 2 4-wire line Rx input B. MODEM 2 Not used. No connection needed.
J2
1 2 3 4 5 6 7 8 9
J3
1,2 3 4 5,6
J4
1 2 3 4 5 6
J5
1,2 3 4 5,6
J6
1 2 3 4 5 6
6 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
CONNECTOR PINOUT Connector Ref. J7 Connector Pin No. 1 2 3 4 5 6 7 8 9 10 J8 1 2 Signal Name VDD BERT 4 RESET BERT 3 VPP BERT 2 VDD ADJ BERT 1 VSS VIS+ VISSignal Type Power Output Input Output Input Output Input Power Power Power VDD connection. BERT RX DATA clock PIC16C77 Reset. BERT RX DATA VPP Programming voltage for PIC16C77. BERT TX DATA clock VDD Adjustment connection. BERT Tx DATA VSS connection. Not used. No connection needed. +ve power from isolated external power supply. 0V power from isolated external power supply. Description
TEST POINTS Test Point Ref. TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12 TP13 TP14 Default Measurement 8-24V 0V 5V 0V 5V LO HI HI HI VIN connection VSS connection VDD connection (3.3V or 5.0V) VPP programming voltage input for PIC16C77 VSS2 connection VDD2 connection (3.3V or 5.0V) SCLK `C-BUS' Serial clock. CDATA `C-BUS' Command data. RDATA `C-BUS' Reply data. MODEM 1 CMX6X4 IRQN output, pin 7. A pull up resistor R6 is included on board MODEM 1 CMX6X4 CSN input, pin 6 MODEM 1 Line Voltage on 2-wire line. MODEM 1 DTMF input MODEM 1 Ring Stimulus output Description
7 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
TEST POINTS Test Point Ref. TP15 TP16 TP17 TP18 TP19 TP20 TP21 TP22 TP23 TP24 TP25 TP26 TP27 TP28 TP29 TP30 TP31 TP32 TP33 TP34 TP35 TP36 TP37 TP38 TP39 TP40 TP41 TP42 TP43 TP44 TP45 TP46 Default Measurement HI HI HI HI HI 0V Description MODEM 1 CMX6X4 TXO output, pin 9 MODEM 1 CMX6X4 TXON output, pin 11 MODEM 1 AC coupled CMX6x4 TOP output, pin 8 MODEM 1 Line signal after transformer. MODEM 1 CMX6X4 RXN input, pin 16 MODEM 1 CMX6X4 RXP input, pin 15 (2-wire line selected) MODEM 1 CMX6X4 RXO output, pin 17 MODEM 1 CMX6X4 VBIAS output, pin 13 MODEM 1 CMX6x4 RLYDRV output, pin 14 MODEM 1 CMX6X4 RT bidirectional pin 18 MODEM 1 CMX6X4 RD input pin 19 MODEM 2 CMX6X4 IRQN output, pin 7. A pull-up resistor R8 is included on board. MODEM 2 CMX6X4 CSN input, pin 6 MODEM 2 Line Voltage input on 2-wire line. MODEM 2 DTMF input MODEM 2 Ring Stimulus output MODEM 2 CMX6X4 TXO output, pin 9 MODEM 2 CMX6X4 TXON output, pin 11 MODEM 2 AC coupled CMX6X4 TOP output, pin 8 MODEM 2 Line signal after transformer. MODEM 2 CMX6X4 RXN input, pin 16 MODEM 2 CMX6X4 RXP input, pin 15 (2-wire line selected) MODEM 2 CMX6X4 RXO output, pin 17 MODEM 2 CMX6X4 VBIAS output, pin 13 MODEM 2 CMX6x4 RLYDRV output, pin 14 MODEM 2 CMX6X4 RT bidirectional, pin 18 MODEM 2 CMX6X4 RD input, pin 19 BERT Tx Data input BERT Tx Data clock output BERT Rx Data output BERT Rx Data clock output VSS connection
8 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
TEST POINTS Test Point Ref. TP47 TP48 TP49 TP50 Default Measurement 0V 0V 0V 0V VSS connection VSS connection VSS connection VSS connection Description
JUMPERS Link Ref. JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 JP9 JP10 JP11 JP12 Positions 1-2 1-2 1-2 1-2 1-2 1-2 1-2 1-2 1-2 1-2 1-2 1-2 Notes: S/C = Default Position S/C S/C S/C S/C S/C S/C S/C S/C S/C S/C S/C S/C Short Circuit Description Disconnect to supply an external clock to PIC16C77 via pin 1. Disconnect when supplying external clock to PIC16C77 via JP1 pin 1. Disconnect when supplying external clock to MODEM 1 evaluation device via JP4 pin 1. Disconnect to supply an external clock to MODEM 1 evaluation device via pin 1. Disconnect to measure IDD of MODEM 1 evaluation device. Disconnect when supplying external clock to MODEM 2 evaluation device via JP7 pin 1. Disconnect to supply an external clock to MODEM 2 evaluation device via pin 1. Disconnect to measure IDD of MODEM 2 evaluation device. Connect to monitor MODEM 1 2-wire line voltage. Connect to monitor MODEM 1 2-wire line voltage. Connect to monitor MODEM 2 2-wire line voltage. Connect to monitor MODEM 2 2-wire line voltage.
9 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
SWITCHES Link Ref. SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW9 Positions Open/Closed 1-2, 6-5/2-3, 4-5 1-2, 6-5/2-3, 4-5 1-2, 6-5/2-3, 4-5 1-2, 6-5/2-3, 4-5 1-2, 6-5/2-3, 4-5 1-2, 6-5/2-3, 4-5 1-2, 6-5/2-3, 4-5 1-2, 6-5/2-3, 4-5 Default Position Open 2-3, 4-5 2-3, 4-5 2-3, 4-5 1-2, 6-5 2-3, 4-5 2-3, 4-5 2-3, 4-5 1-2, 6-5 Description PIC16C77 Reset. Isolated or non-isolated (default) PC Interface. Operating (default) or programming mode. MODEM 1 2-wire line (default) or 4-wire line MODEM 1 3.5795MHz (default) or 3.6864MHz. MODEM 1 2-wire line (default) or 4-wire line. MODEM 2 2-wire line (default) or 4-wire line. MODEM 2 2-wire line (default) or 4-wire line. MODEM 2 3.5795MHz (default) or 3.6864MHz.
10 (c) 1999 Consumer Microcircuits Limited UM6240/3
1.5
VDD
RESET
VDD
TP4
VDD VDD VDD
C16 47nF R12 GND D8 100k GND
E E E
VDD2
C17 47nF C18 47nF
De-coupling for IC 2, IC5 and IC7.
U2:C
2
IRQN1
1
IRQN2
CD1
CD2
SW1 R11
7
6
R6 100k SWITCH_PTM 270R
R8 100k
D6
D7
D21
D35
VPP VDD
R71 330R GND R73 330R R65 330R R37 330R
U2:D 1N914 RP3 BC213L
B
C C C 6 5 4 3 2 1
9
10
GND
74HC4049 74HC4049
3 14 15 2
U2:F U2:E
11 12
C
BC213L
B B
E
R9 1k BC213L
B
R10 1k BC213L 1M TR4 TR6 R74 330R R66 4k7 R38 4k7 TR5 TR2
R81 1k
R82 1k
GND U2:A
5 4
Evaluation Kit for CMX624/CMX644A
IRQN2
3 38 RA1 37 RA2
1
RA0 RB5
U3
RB7 RB6
2
LV1
10k
RA4 RB2 34 RA5 33 8 RB0 RE0 9 RE1 10 RE2 VSS 11 12 RD7 Vss RD6 13 29 RD5 RD4 RC7 RC6 RC5 RC4 RD3 RD2 21 22 12 23 24 25 26 27 28 Vdd 4 30 13 31 3 32 VDD 2 15 RB1 1 16
5 36 RA3 6 7 35 RB3
3
RP1 15pF
17 RC1 RC2 RC3 19 1 20 RD1 RD0
RTS 15 CTS 16
RC0 18
RXD TXD
5
4
1 2 3 4 5 6
VDD
2
C5
JP2
U11:C ILQ615
15 5
TP7 15pF GND
TP9
TP8
100nF
11 6
MAX3232 Vss
C11
U11:D ILQ615
10
VSS2
SCLK
1M
1 2 3 4 5 6
VDD
PR1
GND
VSS2
2
SNPSKT2 J1
TP3
1
TP1
VDD VDD
SNPSKT2 J8
1
DB9F J2 TP6
2
2
1
D1
3 VI
1 A K
U1
2
LM317T R7 D4 1uF
A
VO
TP2 C7 6V2 1N5341
C2
C3 1N4004 D5
BER Test Points
VDD
3
33uF 240R 1N4004
SW2:A
Notfitted
VDDADJ
Isolate
6 5 4
TP5
GND R4
VDD RESET VPP
GND
GND
620R skt C6 GND GND 10uF
1 3 5 7 9
SW2:B TP42 TP43 TP44 TP45 GND
GND
PROTO_10*30
R5 GND
TP46 TP47
J7:1 J7:3
TP48 TP49 TP50
8 6 4
VDDADJ
100R skt
J7:5
J7:7
J7:9
J7:8
J7:6
J7:4
GND
CONN10M
J7:2
2
GND
9 8 7 6 5 4 3 2 1
Figure 2 Control Section
RDATA
RP2
7
CDATA
9
8
Isolated PSU Input
VDD2
VSS2
6
(c) 1999 Consumer Microcircuits Limited
VDD
U2:B
TP10 TP11 TP26 TP27
PIC16C77
1 /MCLR 2 39 40
R72 330R
IRQN1 VDD2
CSN1
TP12
4 RB4
CSN2
SW3:A R75 1k
U11:A ILQ615
R1 TP28 TP13 TP29
10k
R76 1k
VDD2
C12 100uF C13 47nF
LV2
10k 10k
U11:B ILQ615
14
R2
DTMF1 VDD
TP14
R3
VSS2
DTMF2 VDD
C9 47nF GND C8 47nF TP30 GND
14 OSC2 OSC1
R70
U4
16
RING1
C10 100nF
Vdd 4 C2+ 5 C1+ 1 2
C15 100nF C14
RING2
JP1
2 1
VSS2 VDD
C26 V12 R1OUT 11 T1IN 10 T2IN 9 R2OUT
V+ C1-
3 13 R1IN T1OUT T2OUT 14 7 8 R2IN
Circuit Schematics and Board Layouts
100nF
11
C4 GND 1M GND X1 4MHz R78 1k
Program
R77 1k SW3:B
EV6240
UM6240/3
RING DETECT (Modem 1)
VDD
470k R28
TP25
NOTES:
FS1
250mA
2-Wire Line (Modem 1) J3
C19 R21
R14
VDD
ZVP4424A R35 470k TR1 C23 TP24
1
2
skt Wire link 100nF D19 1N4004 D18 1N4004 D20
470k D17
Not fitted:R14,R15,R16,R17,R18,R19,D12,D15 and D16.
3
D12
4
RING1
2
6
Not fitted
5
GND C20 SW5:A
1 3
R32 skt 68k C27
1N4004
18pF
R15
1
1N4004 R22
VDD
skt Wire link 100nF JP3 JP5 D13
3+
2
470k
GND
2
1
330nF
D10 1N4004 D14 1M8
1 2
6 4
R23
3.579545MHz X2
GND 1N4004
1
1N4004 D11
LV1
GND
2 1
X3 3.6864MHz C29 100nF
External Clock I/P (Modem 1)
GND
-
Evaluation Kit for CMX624/CMX644A
1N4004 SW5:B
1 24 XTALN 2 XTAL/CLK 3 SERCLK N/A 21 COMDATA 5 REPDATA 6 CSN 7 IRQN 8 TOP 9 TXO 10 TXN 11 TXON RLYDRV 13 Vss Vbias 14 RXP 15 RXN RXO 16 17 RT 18 RD N/A 19 20 N/A 22 N/A 23
5
U5:A LMC6482N
1
2
2
250mA
R16
FS2
250mA
5
FS3
Not fitted
Figure 3 Modem One Section
1
Not fitted
(c) 1999 Consumer Microcircuits Limited
R24 120k
XTAL Select (Modem 1)
JP4
CMX6X4P4
JP9
JP10 LINE VOLTAGE
MONITORING (Modem 1)
C24 TP15 C25 GND skt
18pF
SCLK CDATA
skt GND
U6
Vdd
C44 1uF
GND
RDATA IRQN1
TP17 C43 skt 100nF
4
Tx/Rx (Modem 1)
R26 skt
1 2 3
330pF R29 skt 100k R31 skt 180k SW4:A TP16
12
CSN1
TP21
5+
R20 2k2
4 1
C21 T1 600R
3 4 5 6
TP23
6-
7
DTMF1
U5:B LMC6482N C30 100nF R40 skt
skt
6
1uF 1:1 600R SW4:B
Line Select 1 (Modem 1)
HOOK (Modem 1)
6
U9 AQV253H
VDD
GND R41 1k 10nF D22
HOOK1
TP22 TP20 R36 skt 100k
6
1M GND
5 4
1
R79 1k5 C26 skt
R39 100k SW6:B
12
R33 skt 120k
5
2
4
Line Select 2 (Modem 1)
Tx (Modem 1)
4 1
R27 skt 600R
skt Wire link D15
6 3
4-Wire Line (Modem 1) J4
R17 skt Wire link R18 TP18
2
T2
1:1 600R 100k skt TP19 R30 skt 91k R34 330pF
2
C28 skt
3
4
6 1 4 1
Rx (Modem 1)
T3 100nF skt R25 600R
C22
3
SW6:A
skt Wire link D16
Line Select 2 (Modem 1)
6 3
R19 skt Wire link GND
1:1 600R
EV6240
UM6240/3
RING DETECT (Modem 2)
VDD
470k R56
TP41
NOTES:
FS4
250mA
2-Wire Line (Modem 2) J5
C31 R49
R42
VDD
ZVP4424A R63 470k TP40
1
100nF D32 TR3 C35
2
skt Wire link 1N4004 D31 1N4004 D33
470k D30
Not fitted:R42,R43,R44,R45,R46,R47,D25,D28 and D29.
3
D25
4
RING2
2
Not fitted
5
GND C32 SW9:A
1 3
R60 skt 68k C39
6
R43 JP6
1
1N4004 R50 1N4004
18pF
VDD
Evaluation Kit for CMX624/CMX644A
skt Wire link 100nF JP8 D26
3 + 1 2-
D23 GND C41 100nF 1N4004 D27 1M8
R51
3.579545MHz X4
GND
6 4
1N4004 D24
LV2
GND
2 1
X5 3.6864MHz
External Clock I/P (Modem 2)
2
1
1
5
2
2
250mA
R44
FS5
1
Not fitted
250mA
5
FS6
Not fitted
(c) 1999 Consumer Microcircuits Limited
470k GND
2 1
330nF
1N4004 SW9:B
1
U7:A LMC6482N
XTAL Select (Modem 2)
JP7
CMX6X4P4
JP11 18pF
R52 1N4004 120k JP12 LINE VOLTAGE
SCLK
2 XTAL/CLK 22 SERCLK 21 COMDATA 5 REPDATA CSN IRQN TOP 9 TXO TXN TXON 12 Vss 10 11 N/A RD RT RXO RXN RXP RLYDRV Vbias 19 18 17 16 15 14 13 6 7 N/A 20 N/A N/A 3 23
MONITORING (Modem 2)
C36 C37 GND 330pF R57 skt TP33 C1
8
XTALN
U8
Vdd
24
C45 1uF skt GND TP37
TP31
CDATA RDATA
skt
4
GND
IRQN2 CSN2
skt 100nF R59 skt 180k
Tx/Rx (Modem 2)
R54 skt
1 2 3 1 4
Figure 4 Modem Two Section
C33 T4 600R SW8:A TP32
3 4 5 6
100k
5+
13
1uF
6
R48 2k2
TP39
6 -
7
DTMF2
U7:B LMC6482N C42 100nF R68 skt 1M TP38 TP36
skt 1:1 600R SW8:B
Line Select 1 (Modem 2)
HOOK (Modem 2)
VDD
R80 1k5 1k R69 C38 skt 10nF D34
HOOK2
U10 AQV253H
GND R64 skt 100k R61 skt 120k
GND
6 5 4
6
1
R67 100k SW7:B
5
2
4
Line Select 2 (Modem 2)
Tx (Modem 2)
4 1
R55 skt 600R
4-Wire Line (Modem 2)
D28
6 3
skt Wire link T5
J6
R45 1:1 600R
2
C40 TP34 TP35 100k skt
2
3
R62
330pF skt
4
skt Wire link R46
6 4 1
Rx (Modem 2)
T6 100nF skt R53 600R
3
C34
3 1
SW7:A
R58 skt 91k
skt Wire link D29
6
Line Select 2 (Modem 2)
R47 skt Wire link GND
1:1 600R
EV6240
UM6240/3
J1 1 C9 D6 R9 R71 R76 U11 VIS+ VISC15
R82
IRQN1 R74 SW2 ISOLATE TP6 C12 U4 TP5 VDD2 VSS2
CD1
IRQN2
CD2 IRQN1 CSN1 IRQN2 CSN2 TP10 TP11 TP26 TP27 D35 R12 U3 PIC16C77
R73 R75
VSS TP48 RP2
BER Test Points TP42 TP43 TP44 TP45 NORM J8 OP
SW3 PROG
TP1 R81 R10 R11
D21
D7
RP3
C3 R4 U2 74HC4049 TR6 C14 C10 C11 R37 ILQ615
R65
VIN
C16
VSS
J7
TP4 VPP
C2
D5
R5
C13
MAX3232
Evaluation Kit for CMX624/CMX644A
D1 R8 C6 SW1 RP1 SCLK X1 TP7 TP9 TP8 X4 3.5795MHz SW9 JP7 X5 R52 R40 R41 TP30 R39 TP23 D22 RLYDRV TP49 FS3 SW6
R49 D30
TP2 JP3 C23 SW5 JP4 C43 LMC6482N TR3 RING2
C17
C7 JP6 C35 VDD 3.6864MHz TP33 C1 TP31 R60
R51
TP3
C5
R78
R77
R38
PCB008B
R23
D32
D19
R21
D17
R16
R19
FS1 D12 D15
JP10 AQV253H C26 2-Wire Line TP20 RXP R36 R25 FS2
FS4 D25
JP12 2-Wire Line AQV253H C38 TP36 RXP R64
R42
R53 FS5
R44 D28 JP11 R48
R14
C20 U9
R17
JP9 R20 R26 R33 R27
R15
C21
R43
C33
2-Wire Line T1 T2
4-Wire Line
VSS
TP50
R45
R18
C32
U10
R54
R61 R55
R47
Figure 5 Evaluation Board Layout
14
TXO HOOK1 VSS R56 TP41 RD D31 D26 D33 R50 C28 TP21 RXO R34 RXN TP19 R30 TP22 VSS R79 4-Wire Line D10 C19 SW4 T3 D16 TP18 TP46 C22
RING1
TR1
R24
LMC6482N
C18
(c) 1999 Consumer Microcircuits Limited
D8 R6 C8 RDATA CDATA R72 C4 JP1 JP2 TR4 R66 RESET TR5 TR2 U8 CMX6X4P4 JP8 C41 J2 MODEM 2 C39 C45 C36 TP40 RT LV2 TP28 R63 R2 U7 DTMF2 TP29 R70 R68 R69 TXO C40 R57 TXON C42 TP32 VBIAS R59 C37 D24 TP38 R80 4-Wire Line SW8 SW7 D23 D27 C31 TP34 C34 T6 D29 R67 TP39 D34 RLYDRV R58 FS6 RS232 U6 CMX6X4P4 JP5 MODEM 1 C29 TP24 RT C27 LV1 DTMF1 VSS TP12 TP13 C44 R35 R1 R3 U5 C24 HOOK2 VSS TP47 TP37 RXO R62 RXN TP35 R46
U1
VSS
R7 D4 VDD
X2
3.5795MHz
X3
3.6864MHz
TP17 TP15
TP14
R28
R32
TP25 RD
D20
D18
R22
D13
C30 R31 C25 R29 TXON TP16 VBIAS D11
D14
board mod
J4
2-Wire Line
4-Wire Line
J3
1
2
3
4
5
J5
T4
T5
J6
EV6240
UM6240/3
J1 1 VDD2 VSS2 SW2 D6 ISOLATE VIS+ VISD21 D7 D35 TP6 TP5 PROG IRQN1 CD1 IRQN2 CD2 IRQN1 CSN1 IRQN2 CSN2 TP10 TP11 TP26 TP27 VSS TP48
BER Test Points TP42 TP43 TP44 TP45 NORM J8 OP
SW3
TP1
Evaluation Kit for CMX624/CMX644A
(c) 1999 Consumer Microcircuits Limited
JP1 JP2 SW1 SCLK RESET TP7 TP9 TP8 JP5 JP3 3.5795MHz DTMF1 TP13 SW9 JP7 3.6864MHz TP33 RING2 TP21 RXO HOOK1 TP23 D22 RLYDRV TP49 VSS TP41 RD TXON TP32 VBIAS TP38 4-Wire Line SW6 TP18 JP10 2-Wire Line TP20 RXP JP11 SW4 JP12 2-Wire Line TP36 RXP SW8 SW7 TP34 TP30 RXN TP19 TXON TP16 VBIAS VSS TP46 TP22 4-Wire Line TP31 TXO JP6 JP8 J2 RS232 CDATA RDATA SW5 JP4 TP24 RT LV1 TP12 TP40 RT LV2 TP28 DTMF2 TP29 TXO TP37 RXO RXN TP35 HOOK2 TP39 D34 RLYDRV VSS TP47 4-Wire Line VSS TP50 2-Wire Line 4-Wire Line J4 J5 J6
VIN
VSS
J7
TP4 VPP
VSS
VDD
TP2
TP3
3.5795MHz
3.6864MHz
Figure 6 Evaluation Board Inputs, Outputs and Test Points
15
RING1
TP17 TP15
TP14
TP25 RD
JP9
2-Wire Line
J3
EV6240
UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6
1.6.1
Detailed Description
Hardware Description - Evaluation Board
1.6.1.1 Line Protection. Line protection is provided for each Modem on both line interfaces by R14-R19 (47), R42-R47 (47), D12, D15, D16, D25, D28 and D29 (Phillips BR211 series 140V). These components are not fitted, but suitable values for UK applications are suggested in brackets. Wire links which bypass R14-R19 (Modem One) and R42-R47 (Modem Two) will need to be removed if these resistors are fitted. 1.6.1.2 Operating Voltage The operating voltage (VDD) is set to 5.0V. This may be altered by changing components R4 and R5 which are socketed. To select 3.3 Volts set R4 = 360 and R5 = 33. The formula for calculating the values of R4 and R5 is as follows: R4 + R5 = 240 (VDD -1.25) 1.25
Where 240 is the value of R7 in ohms and VDD is the required supply voltage. 1.6.1.3 Clock/Oscillator The CMX6x4 evaluation devices may use either an external clock or their own xtal oscillators. Two on-board xtals, 3.5795MHz (CMX624) and 3.6864MHz (CMX644A), are provided for each Modem for the latter method. A single switch for each Modem is provided to select between the on-board xtals, SW5 (Modem One) and SW9 (Modem Two). Two jumpers for each Modem (JP3 and JP4 for Modem 1 and JP6 and JP7 for Modem 2), which are normally fitted, can be removed to allow for an external clock. The external clock may be supplied to JP4 pin 1 (Modem One) and/or JP7 pin 1 (Modem Two) once the jumpers have been removed. The PIC16C77 may be provided with an external clock in the same way by removing jumpers JP1 and JP2. Note that PICs programmed by CML are only configured for use with the on-board 4MHz crystal.
1.6.1.4
Line Interface Each Modem is provided with 2-wire and 4-wire line interfaces. The interfaces for each Modem are selected using two miniature switches, SW4 and SW6 (Modem One) and SW7 and SW8 (Modem Two). The line interface switches should be the same as the settings in the S27 registers. The majority of the line interface components are fitted in sockets for adjustment purposes. These values should be calculated based on the evaluation device, operating voltage and line conditions, see the evaluation device data sheet for more information. The 2-wire ac line impedance matching is provided by T1, R26 (Modem One) and T4, R54 (Modem Two) which are factory fitted to suit a 600 line. The line transformers used on the EV6240 board have an insertion loss of approximately 1.2dB over the operating frequency range. The dc line resistors, R20 (Modem One) and R48 (Modem Two) should be removed when connecting the on-board Modems together via the 2-wire line. Note: for correct operation ensure the TXON output of the CMX6x4 device is enabled whilst performing evaluation tests.
16 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.1.5
Ring Detection Modem One Ring detection on the 2-wire line is provided by components C19, C20, R21, R22, R28 and R32, plus D17-D20. The response time is set by components R35 and C27. Modem Two Ring detection on the 2-wire line is provided by components C31, C32, R49, R50, R56 and R60, plus D30-D33. The response time is set by components R63 and C39. The evaluation board has been fitted with suitable components for UK applications. See CMX624/CMX644A data sheets for further details. Ring Stimulus Ring stimulus can be applied to each Modem via the PIC C and TR1 (Modem One) or TR3 (Modem Two). This feature is activated when the user enters the ring stimulus command. IDD Measurement The evaluation device IDD may be measured for each Modem by removing jumper JP5 (Modem One) or JP8 (Modem Two) and replacing it with a multimeter. Line Voltage Monitoring An indication of the level of voltage on the 2-wire lines for each Modem are provided at Bit 0 (Pin 2) and Bit 1 (Pin3) of the PIC C Port A. For a 48 Volt dc line the level at this point is 3.0V dc. These C pins can be re-configured as ADC inputs and, with appropriate firmware, be used to monitor the line voltage. Note that this feature is not used by the current firmware revision. The line voltage monitoring circuitry can be disabled by removing jumpers, J9 and JP10 (Modem One) or JP11 and JP12 (Modem Two). When the line voltage monitoring jumpers (JP9 to JP12) are removed, the line interface will not be referenced to VSS.
1.6.1.6
1.6.1.7
1.6.1.8
1.6.1.9
Optional Opto-Isolated Serial Interface. To avoid potential common mode interference problems when operating over the 2-wire line, the line interface is referenced to VSS(line voltage monitoring jumpers fitted). However, this 2-wire line referencing scheme will cause the line to become unbalanced when the evaluation kit is connected to a telephone simulator that employs a ground referenced line interface. Therefore the EV6240 is provided with an optional opto-isolated serial interface to overcome this problem. The optional interface will also minimise noise from the host PC. To operate with the opto-isolated serial interface set switch, SW2, to the `ISOLATE' position and connect a second power supply or battery via the two-way socket, J8. This second power supply should be set to the same voltage as the on-board regulated supply, (VDD) either 3.3V or 5V.
1.6.1.10 Serial Interface On the evaluation board the RS232 DCD (Data Carrier Detect) and DSR (Data Set Read) handshaking lines are linked to the PC DTR (Data Terminal Ready) line. For evaluation purposes these handshaking lines are not toggled in the same fashion as a standard PC Modem. During normal operation and V22/V23 handshaking sequences the PIC C only uses the TXD (Transmit Data) and RXD (Receive Data) lines together with the CTS (Clear to Send) and RTS (Request to Send) handshaking lines to communicate with the PC via the serial interface.
17 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.1.11 DTMF Decoding An indication of the DTMF signal levels on either the 2 or 4 wire lines for each Modem are provided at Bit 2 (Pin 4) and Bit 5 (Pin 7) of the PIC C Port A. These C pins can be reconfigured as ADC inputs and, with appropriate firmware, be used to decode the DTMF signal. The DTMF signal level at the PIC C inputs can be adjusted by changing components R40 (Modem One) or R68 (Modem Two). The components R40 and R68 have been fitted with values to provide a 20dB voltage gain with respect to the signal level at RXO. Note that this feature is not used by the current firmware revision. 1.6.2 Adjustments and Controls Various line interface components around the evaluation devices are socketed to allow for user adjustments. Discrete component sockets are also provided for Telco-specific components. Miniature control switches are provided to select the required line interfaces (2-wire or 4-wire), onboard crystals (3.5795MHz or 3.6864MHz), mode (operating or program) and serial interface (normal or isolated). Firmware Description The source code for the PIC firmware is supplied as the file EF6240XX ASM. Please note that there are two modes of operation for the Evaluation Kit. Modem Mode allows one of the evaluation board modems to perform calling, answering and simple data tests with a line simulator or external third party modem (not supplied). Test Mode allows diagnostic and performance tests to be made on Modem One and/or Modem Two. The firmware supplied in the PIC C assumes the following configuration; 8 data bits, no parity, 1 stop bit and 19,200 baud with hardware handshake but without CR CR/LF conversion. The firmware only supports DTMF dialling. The firmware routine run at start-up and reset performs the following important tasks: Peripheral Interrupt Initialisation C ports and I/O direction initialisation Serial Communication Interface (SCI) initialisation Serial Peripheral Interface (SPI) initialisation Loads Modem One and Modem Two with factory profile 0 Resets Modem One and Modem Two evaluation devices. The message EF6240 Vx.x (where x.x represents the version number), will be displayed in the terminal emulator window when these tasks have been completed. AT command echoing is an option available in the firmware and involves echoing the received characters sent by the PC. When echoing is enabled the firmware will send a LF character directly after a CR character to ensure the terminal emulator display is legible. The firmware also provides the option of sending result codes to the PC. These responses can be in either an alpha or numeric (hex) form. Simple data transfer using the terminal emulator involves the user entering text via the keyboard. Downloading data may be achieved using the terminal emulator send text file facility. The C firmware does not support any send or receive data transfer protocols.
18 (c) 1999 Consumer Microcircuits Limited UM6240/3
1.6.3
Evaluation Kit for CMX624/CMX644A
EV6240
The send text file facility can also be used for AT Command Scripts. Note: some terminal emulators have been found not to support full hardware flow control when transferring text files. This could result in data loss when using this facility. If this problem is experienced users should try using a different terminal emulator The following AT commands can be entered on a PC running Windows terminal emulator software, such as the `Hyper Terminal' program supplied with Windows '95 or NT systems.
Basic AT Commands Command
A
Description
Answer Command The modem will go off-hook, transmit the answer tone, and wait for a carrier from the remote modem. Syntax: ATA
A/
Re-Execute Previous Command Line Re-executes the last issued command line. This command does not require the AT prefix or a carriage return. Syntax: A/
Bn
Select Communications Standard Selects the communications standard specified by the parameter n. Syntax: ATBn Modifier Usage n=0 Selects ITU-T Standard (default). n=1 Selects Bell Standard.
Dn
Dial Command This command directs the modem to go off-hook, dial according to the string entered and attempt to establish a connection. Number of DTMF digits entered cannot exceed 16. Syntax: ATDn1n2n3.......n16 Modifier Usage n1..16=0-9, *, #, A-D DTMF digits. n1=L Re-dial last number.
En
Echo Command Characters Syntax: ATEn Modifier Usage n=0 Disables the echoing of commands to the screen n=1 Enables echoing of commands to the screen (default).
19 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Fn
Select Line Modulation Selects the line modulation specified by the parameter n. Syntax: ATFn Modifier Usage n=0 Selects the CMX624 for V.23 or Bell 202 line modulation (default). n=1 Selects the CMX644A for V.22 or Bell 212A line modulation. n=2 Reserved.
Hn
Switch Hook Control Syntax: ATHn Modifier Usage n=0 Instructs the modem to go on-hook (disconnect). n=1 Instructs the modem to go off-hook.
In
Identification Requests the modem to return its product identification information. Syntax: ATIn Modifier Usage n=0 Displays the firmware name and version number. n=1 Displays Product Name. n=2 Displays CML UK sales information. n=3 Displays South East Asia sales information. N=4 Displays NAFTA sales information.
Qn
Enable/Disable Modem Responses Syntax: ATQn Modifier Usage n=0 Enables result codes to be issued to the screen (default). n=1 Disables result codes to be issued to the screen
Sn?
S-Register Read Command for displaying the contents of an S-Register. Syntax: AT@Sn? where n is the S-Register to be interrogated (decimal). Value returned will be in hexadecimal format.
Sn=x
S-Register Write Command for writing to an S-Register. (See list of S-Registers later on) Syntax: AT@Sn=x where n is the S-Register (decimal) and x is the value to be written (decimal, 0-255).
20 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Vn
Result Code Format Syntax: ATVn Modifier Usage n=0 Instructs the modem to display result codes as numbers. n=1 Instructs the modem to display result codes as words (default).
Xn
Calling Characteristics Determines which set of responses and calling characteristics are used. Syntax: ATXn Modifier Usage n=0 The modem will ignore dial tones and busy tones. Dial tone wait time is zero, and blind dialling is enabled. The modem returns a CONNECT result code when a connection is established. n=1 The modem will ignore dial tones and busy tones. Dial tone wait time is zero, and blind dialling is enabled. The modem returns a CONNECT xxxx result code when a connection is established, where xxxx is the Tx/Rx line speed (default). n=2 The modem will ignore busy tones, but waits for a dial tone before dialling. If a dial tone is not detected within 5 seconds, a NO DIAL TONE result code is returned. The modem returns a CONNECT xxxx result code when a connection is established, where xxxx is the Tx/Rx line speed. n=3 The modem will ignore dial tones. If a busy tone is detected, a BUSY result code is returned. Blind dialling is enabled. The modem returns a CONNECT xxxx result code when a connection is established, where xxxx is the Tx/Rx line speed. n=4 If a dial tone is not detected within 5 seconds, a NO DIAL TONE result code is returned. If a busy tone is detected, a BUSY result code is returned. The modem returns a CONNECT xxxx result code when a connection is established, where xxxx is the Tx/Rx line speed.
Zn
Modem Reset Instructs the modem to reset the evaluation device and then reload the factory SRegister settings. Syntax: ATZn Modifier Usage n=0 Reset CMX6x4 device and restore factory profile 0. n=1 Reset CMX6x4 device and restore factory profile 1.
$
AT Command Online Help Displays all AT Commands Syntax: AT$
21 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Extended AT Commands Command
&Fn
Description
Recall Factory Defaults Instructs the modem to reload the factory S-Register settings. Syntax: AT&Fn Modifier Usage n=0 Recalls factory profile 0. n=1 Recalls factory profile 1.
&Gn
Guard Tone Select in ITU-T Mode Guard tones are always disabled in the U.S.A. Syntax: AT&Gn Modifier Usage n=0 Disable guard tone (default). n=1 Select a 550Hz guard tone. n=2 Select a 1800Hz guard tone.
&Ln
Select Line Interface Selects the line interface specified by the parameter n. On-board miniature switches must also be switched to required position. Syntax: AT&Ln Modifier Usage n=0 Selects the 2-Wire line interface (default). n=1 Selects the 4-Wire line interface.
&$
Extended AT Command Online Help Displays all Extended AT Commands Syntax: AT&$
22 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
CML Specific AT Commands Command
@Bn
Description
Ring Detection Instructs PIC to detect BT or Bell ringing on a modem's Ring Detect Line. Syntax: AT@Bn Modifier Usage n=0 BT ring detection (default). n=1 Bell ring detection.
@En
Evaluation Mode Informs PIC which mode we will be operating in. Syntax: AT@En Modifier Usage n=0 Selects Modem Mode (default). n=1 Selects Test Mode.
@Fn
Test Functions Syntax: AT@Fn Modifier Usage n=0 Return the status of the following digital inputs:IRQN1 (Bit 0), LV1 (Bit 1), IRQN2 (Bit 4), and LV2 (Bit 5). n=1 BER measurement. (Not available in the current firmware revision). n=2 BER Test points (Returns status of input and sets outputs high). n=3 BER Test points (Returns status of input and sets outputs low). n=4 CD LED On. n=5 CD LED Off. n=6 Simulate Ring Burst. n=7 Simulate Ring Silence.
@Mn
Modem Focus Informs PIC which modem should have the AT Command focus. All subsequent AT Commands are directed at the modem with the focus. Syntax: AT@Mn Modifier Usage n=0 Directs all subsequent AT Commands to Modem One (default). n=1 Directs all subsequent AT Commands to Modem Two.
@RR
CMX6x4 Device Reset Resets the CMX6x4 device for the modem with focus. Syntax: AT@RR
23 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
@Rn?
CMX6x4 Register Read Command for displaying the contents of a CMX6x4 device register Syntax: AT@Rn? where n is the CMX6x4 register address (hexadecimal). Value returned is in hexadecimal format.
@Rn=x
CMX6x4 Register Write Command for writing to a CMX6x4 device register. Syntax: AT@Rn=x where n is the CMX6x4 register address (hexadecimal) and x is the value to be written (decimal, 0-255).
@Tn
BER Measurement Set Up Informs PIC which modem is transmitting and receiving during BER measurement. Syntax: AT@Tn Modifier Usage n=0 Selects Modem One Tx/Rx (default). n=1 Selects Modem One Tx and Modem Two Rx. n=2 Selects Modem Two Tx and Modem One Rx. n=3 Selects Modem Two Tx/Rx.
@$
CML Specific AT Command Online Help Displays all CML Specific AT Commands Syntax: AT@$
AT Command Summary 1) Commands must be typed in upper case. 2) The maximum command length is 32 characters, including the AT prefix but excluding the carriage return. 3) A user defined escape sequence (usually +++) is required to revert the modem from on-line (data transfer mode) to the command mode, to allow the user to issue AT commands to the PIC. 4) Every command except for A/ and the escape sequence must begin with the AT prefix and be entered by pressing a carriage return.
24 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
S-Registers The following table gives a brief description of the available S-registers and their functions. Register range, units and factory profiles are also listed.
S- Register Reg Range Units Description
Factory Profiles `0' `1'
(Default at Power up) 0
S0
0-255
Rings
Automatic answer - The number of rings until automatic answer. If the register is set to zero, modem does not answer. Count incoming rings - This register is read only and contains the number of rings detected by the modem. Escape character value - This register defines an ASCII decimal value of the escape character. The default setting is an ASCII + and the escape sequence is +++. A value over 127 disables the escape sequence. Carriage return character - Contains the ASCII decimal value of the character used to send a carriage return. This character ends both commands and result codes. Line feed character - Contains the ASCII decimal value of the character used to send a line feed. The modem sends the line feed character after a carriage return only when word responses are sent. Wait time for blind dialling - Sets the length of time to pause after the modem goes off the hook before the modem dials the first digit of the telephone number. Wait for carrier after dial - Sets the length of time the modem waits for a carrier before returning on-hook.
5
S1
0-255
Rings
0
0
S2
0-127
ASCII Decimal
43
43
S3
0-127
ASCII Decimal
13
13
S4
0-127
ASCII Decimal
10
10
S6
2-255
s
2
2
S7
1-255
s
50
50
25 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
S-Register Reg
S10
Range
1-255
Units
100ms
Description
Lost carrier to hang up delay - Sets the length of time that the modem waits before hanging up after the loss of a carrier. This allows the modem to distinguish between disturbances that momentarily break the connection and the remote modem hanging up. DTMF tone duration - Defines the duration of DTMF tones for tone dialling. The length of pause between each DTMF tone is the same as this duration time. Escape code guard time - Controls the time required before typing escape sequence codes. General options - provides the following functions: Bit 0 - Reserved Bit 1 - Echo command character, 0 Disables echoing (ATE0), 1 Enables echoing (ATE1) Bit 2 - Result code display, 0 Send responses (ATQ0), 1 Do not send responses (ATQ1) Bit 3 - Word or number responses, 0 Send number responses (ATV0), 1 Send word responses (ATV1) Bit 4,5,6 - Reserved Bit 7 - Answer/originate operation, 0 Answer (ATA), 1 Originate (ATD) General Purpose Timer - Used for various firmware functions.
Factory Profiles `0' `1'
7 7
S11
5-255
10ms
10
20
S12
0-255
50ms
20
20
S14
0-255
Decimal
138
128
S18
0-255
s
5
5
26 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
S-Register Reg
S22
Range
0-255
Units
Decimal
Description
Bit Mapped register - Provides the following functions: Bit 0,1,2,3,7 - Ignored Bit 4,5,6 - Calling Characteristics, 000 (ATX0), 100 (ATX1), 101 (ATX2), 110 (ATX3), 111 (ATX4) Bit Mapped register - Provides the following functions (Not applicable to CMX624): Bit 0,1,2,3,4,5 - Ignored Bit 6,7 - Guard tones, 00 None (AT&G0), 01 550Hz (AT&G1), 10 1800Hz (AT&G2) General mode selection - Provides the following functions: Bit 0,1,3,4,5- Ignored Bit 2 - Line interface control, 0 Two wire line interface (AT&L0), 1 Four wire line interface (AT&L1) Bit 6 - Bell/ITU-T select, 0 ITU-T standard (ATB0), 1 Bell standard (ATB1) Bit 7 - Ring detection select, 0 BT (AT@B0), 1 Bell (AT@B1).
Factory Profiles `0' `1'
64 64
S23
0-255
Decimal
0
0
S27
0-255
Decimal
0
0
Note: For correct Firmware operation the S2, S3 and S4 settings must be the same for both board modems.
Modem Result Codes Numeric Response (Hex) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F Alpha Response OK CONNECT RING NO CARRIER ERROR CONNECT 1200 CONNECT 1200/75 CONNECT 1200/150 CONNECT 75/1200 CONNECT 150/1200 NO DIAL TONE BUSY UNDEFINED UNDEFINED PIC RX ERROR PIC RX BUFFER OVERFLOW
27 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.4
Software Description
1.6.4.1 Terminal Emulator Users will need to run a suitable terminal emulator on their PC in order to communicate with the PIC C on the Evaluation Kit. `Hyper Terminal', which is supplied with the Windows '95 and NT installations, is suitable for this purpose.
Hyper Terminal Setup Emulation VT100 ASCII Character set ASCII Receiving: COM Port Settings:
Wrap lines that exceed terminal width.
Bits per second Data bits Parity Stop bits Flow Control 1.6.4.2 In-circuit re-programming of PIC16C77
19,200 8 None 1 Hardware
In order that the PIC16C77 C may be re-programmed the existing program must be erased by placing the device in a UV-Eraser for approximately 15 minutes.
TO ENTER PROGRAMMING MODE
Remove power from board. Set switch, SW3, to `PROG' and switch, SW2, to `NORM'. Re-apply power to board. (VDD = 5.0V). Connect the programming voltage (VPP = 12.5V to 13.5V) power supply between test point TP4 (+ve) and VSS (-ve). (e) Ensure the PIC C programming utility PICPROGB.EXE is loaded into the PC under DOS and the PC is connected to the evaluation kit. (f) Reset the EV6240 board by momentarily pressing switch SW1.
(a) (b) (c) (d) PICPROGB This is supplied on disk as a self-documented executable file PICPROGB.EXE for a PC running DOS (either directly or as a DOS window in Windows 3.11 or `95). It is not recommended for use on Windows NT systems. Please note that this programming software does not meet the Arizona Microchip Technology verification requirements for a "production quality" programmer. Also, it does not support the programming of ID.
USING THE SOFTWARE -
28 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
The user interface consists of two windows. The top window contains the operating instructions and status information. The bottom window contains prompting and progress information plus user input. When the top window first appears the user will be prompted to enter the number of the serial communications port to which the EV6240 board is connected, and then, which device is to be programmed. For the EV6240 board select option 2, PIC16C77. Once the user has entered this information, the following commands may be selected: Press F Press C Press B Press P Press V Press R Press A to load file to configure device. to check target device is blank. to program target device. to verify target device. to read target device. to view contents of program data array.
Press Esc to return to DOS. A new function from the above table can be selected whenever the >ok prompt appears in the bottom window. Notes: a) Assembler output files must be in the Intel hex format (.HEX) in order to be usable this programming software. b) by
The PIC C supplied has a Configuration Word which is preset 3FB1H. This selects the crystal oscillator, disables the watch dog timer, enables the power up timer and disables code protection. The programming software currently defaults to 3FB1H. Consult Arizona Microchip Technology for more information on the Configuration Word. The "blank check" command (B) only looks at the first location. A programmed device will always have data in this location as it is the program start address. For each of the commands B,P,R and V the user will be prompted to manually reset the target C, by pressing the RESET switch (SW1) on the EV6240 Evaluation Board. This is because PIC programming always starts from location 0000 and the program counter can only be incremented. Pressing A will display the program data in the bottom window, formatted in pages of 48 consecutive locations. Use the and keys to scroll through the data. Pressing will return the user to the >ok prompt. Programming the EV6240 PIC16C77 using the PICPROGB software takes approximately 2 minutes.
c)
d)
e)
f)
TO LEAVE PROGRAMMING MODE
a) Remove power from board (including the programming voltage, VPP). b) Set switch, SW3, to `OP'. c) Power up board as described in previous sections for normal operation.
29 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.5
Evaluation Tests
1.6.5.1 BER Measurement (Not available in the current firmware revision). To allow the user to perform Bit Error Rate Testing (BERT) the EF6240 firmware contains a BERT routine. This facility requires the user to put the evaluation board into Test Mode (AT@E1) and modify the BER Measurement Set Up (AT@Tn) to the appropriate configuration. The BERT routine can be configured to operate in one of two ways; with a single on-board Modem connected to an external simulator/modem, via the 2 or 4-wire line interfaces; or simply by connecting the two on-board Modems together via the 2 or 4-wire line interfaces. Note, the BERT routine is performed in synchronous mode and uses a preamble and sync byte when it begins to allow the C firmware to synchronise with the start of the bit stream. When the configuration set up is complete BERT can commence by entering the AT@F1 command. The BER Tester should be started before the user enters the AT@F1 command to ensure bit synchronisation is achieved. Hardware Setup This function enables connection to BER Testers as follows: TP42 (PIC16C77 C Pin 19) to BER Tester Tx Data O/P TP43 (PIC16C77 C Pin 20) to BER Tester Tx Data Clock I/P TP44 (PIC16C77 C Pin 21) to BER Tester Rx Data I/P TP45 (PIC16C77 C Pin 22) to BER Tester Rx Data Clock I/P The tester must be able to operate from an external clock. The timings of the clock provided from the Evaluation board C are as follows:
Rx Clock
1 Byte Time
tA
Tx Clock
1 Byte Time
tB
Figure 7 Evaluation board C clock outputs Times tA and tB vary as the clocks are adjusted to fit the exact byte periods of the evaluation devices. Data is assumed to be clocked in and out of the Tester on the rising edge of either Rx or Tx clock.
30 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.5.2 Modem Two Automatically Answering a V22 Call from an External Simulator/Modem Modem Two configured to auto-answer on 10 consecutive BT rings via the 2-wire line. The CMX644A will be configured to operate with 8 data bits, 1 stop bit and no parity. Example assumes the evaluation board is powered up with CMX644A target devices inserted and with the line select switches set to 2-wire and the crystal select switches set to 3.6864MHz. 1. Select CMX644A target devices for V22 or Bell 212A line Modulation. Command : ATF1 2. Set Focus to Modem Two. Command : AT@M1 3. Write to CMX644A UART MODE register, 8 Data Bits and 1 Stop Bit. UART MODE register Bit 5 (SYNC/ASYNC) will be overwritten during handshaking and data transfer. Command : AT@RE4 = 8 4. Set Automatic Answer S-Register (S0) to 10 rings. Command : ATS0=10 Modem Two will begin the EV6240 Answering Modem Handshaking Sequence when 10 consecutive BT rings have been successfully detected on the 2-wire line. 1.6.5.3 Modem Two Manually Answering a V23 Call from an External Simulator/Modem External Simulator/Modem sets up a call to Modem Two of the EV6240 evaluation board via the 2-wire line. Depending on the test set up a ringing signal will be present on the line or the Calling External Simulator/Modem will be waiting for the 2100Hz Answer Tone. The CMX624 will be configured to operate with 7 data bits, 2 stop bits and no parity. Example assumes the evaluation board is powered up with CMX624 target devices inserted and with the line select switches set to 2-wire and the crystal select switches set to 3.5795MHz. 1. Set Focus to Modem Two. Command : AT@M1 2. Write to CMX624 SETUP register, 7 Data Bits and 2 Stop Bits. All other SETUP register bit settings will be overwritten during handshaking and data transfer. Command : AT@RE0=9 3. Manually Answer V23 Call. Command : ATA Modem Two will go off-hook and begin the EV6240 Answering Modem Handshaking Sequence via the 2-wire line. This will start with a 2 second billing delay before transmitting the 2100Hz Answer Tone.
31 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.5.4 Modem Two Originating a Bell 202 Call to an External Simulator/Modem Modem Two configured to dial out and detect Call Progress tones via the 2-wire line with DTMF tone durations of 150ms. Example assumes the evaluation board is powered up with CMX624 target devices inserted and with the line select switches set to 2-wire and the crystal select switches set to 3.5795MHz. 1. Set Focus to Modem Two. Command : AT@M1 2. Select Bell communications standard for Bell 202. Command : ATB1 3. Set calling characteristic to detect dial tones and busy tones. Command : ATX4 4. Set DTMF Tone Duration S-Register (S11) to 150ms. Command : ATS11=15 5. DTMF Dial. Command : ATD0176432198 Modem Two will begin the EV6240 Calling (Originate) Modem Handshaking Sequence when the dial tone has been detected, DTMF tones transmitted and no busy tone is detected. The OK result code returned to the PC after dialling indicates the handshaking sequence has begun. NO DIAL TONE or BUSY result codes returned to the PC indicate that the dialling stage has failed and the handshaking sequence has not been attempted. 1.6.5.5 Modem Two Transmitting Low Band PSK in Test Mode via a 2-Wire Line Example assumes the evaluation board is powered up with CMX644A target devices inserted and with the line select switches set to 2-wire and the crystal select switches set to 3.6864MHz. 1. Select CMX644A target devices for V22 or Bell 212A line Modulation. Command : ATF1 2. Select Test Mode for simple diagnostic purposes. Command : AT@E1 3. Set Focus to Modem Two. Command : AT@M1 4. Write to CMX644A SETUP register (Relay Drive and 3.6864MHz xtal) Command : AT@RE0=65 5. Write to CMX644A GAIN BLOCKS register (0dB Tx Gain) Command : AT@RE2=240 6. Write to CMX644A TX PSK MODE register (TXON, Low Band and PSK Tx enabled) Command : AT@RE7=66
32 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.5.6 Modem One Originating a V23 Call to an External Simulator/Modem Modem One configured to dial out via the 2-wire line using a blind dialling method (blind dial wait time of 5 seconds) with DTMF tone durations of 200ms. Example assumes the evaluation board is powered up with CMX624 target devices inserted and with the line select switches set to 2-wire and the crystal select switches set to 3.5795MHz. 1. Set Wait Time for Blind Dialling S-Register (S6) to 5 seconds. Command : ATS6=5 2. Set DTMF Tone Duration S-Register (S11) to 200ms. Command : ATS11=20 3. DTMF Dial. Command : ATD0176432198 Modem One will begin the EV6240 Calling Modem Handshaking Sequence when the DTMF tones have been transmitted. The OK result code returned to the PC after dialling indicates the handshaking sequence has begun.
33 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.6
Additional Information
1.6.6.1 CMX624 Optional Connection Settings The CMX624 data format can be modified by the user before a Modem mode connection is attempted. This can be achieved using the AT@RE0=x command (where x is the decimal register setting). At power up the CMX624 SETUP register defaults to 0 which corresponds to 8 bit data, no parity and 1 stop bit. The Rx Equaliser and Tx level control bit settings are also optional and should be enabled if required before a connection is attempted. 1.6.6.2 CMX644A Optional Connection Settings The CMX644A Tx/Rx gain is controlled by the user. The settings in the GAIN BLOCKS register will only be used during handshaking and data transfer if the Tx gain control bits (TG0-TG3) are not equal to zero (o/p off). If a connection is attempted and the Tx gain control bits are zero the firmware will modify the Tx gain control bits of the GAIN BLOCKS register to give a Tx gain of 0dB. The Tx/Rx Equaliser control bit settings are also optional and should be enabled if required before a connection is attempted. 1.6.6.3 V23/Bell 202 Handshaking Sequence for an EV6240 Calling Modem via a 2-Wire Line Figure 8 is a flowchart illustrating the firmware handshaking sequence performed when an on-board CMX624 modem originates a call to an external V23/Bell 202 simulator/modem. The firmware assumes the external equipment has been configured to answer the call using the appropriate protocol. The states shown in the diagram are as follows: Calling Modem Entry Point On entry the Modem will be off-hook, DTMF dialling and the required call progress monitoring completed. State 1 Start the Wait for Carrier after Dial Timer (setting stored in S7). Check Communications Standard selected by user (Bell or ITU-T). If Bell Goto State 4. State 2 Set up CMX624 to detect 2100Hz Answer tone. Start transmitting the 1300Hz calling tone (Cadence 0.6s on and 1.5s off). If the 2100Hz Answer tone is detected then start Validation Timer (setting stored in S18). If the 2100Hz Answer tone is detected for 1s stop transmitting the 1300Hz Calling tone then goto State 3. If the Wait for Carrier after Dial Timer expires then Hang Up and Exit.
34 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
State 3 When Rx Energy flag is clear start 60ms Silence Timer If Validation Timer expires the 2100Hz Answer tone has been present for too long so Hang Up and Exit. State 4 Set up CMX624 to detect High Band FSK. Wait until the Rx Energy flag is set then goto State 4b. If the Wait for Carrier after Dial Timer expires before the Rx Energy flag is set then Hang Up and Exit. State 4b Check Communications Standard selected by user (Bell or ITU-T). If Bell Goto State 4c. Else If 60ms Silence Timer has not expired Hang Up and Exit. State 4c Restart Validation Timer (setting stored in S18). Whilst the Rx Energy flag (currently detecting High Band FSK) is set the Rx data is monitored to ensure 95% of 1's (marks) are detected for 160ms. If 95% of High Band FSK 1's are detected for 160ms Turn on Modem CD LED. Start a 450ms Timer Goto State 5. If Validation Timer expires before 95% of High Band FSK 1's detected then Hang Up and Exit. State 5 Wait until 450ms Timer expires then set up the CMX624 to Tx Low Band FSK 1's. Start a 320ms Timer State 6 Wait until 320ms Timer expires then goto Data Transfer Mode.
35 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Figure 8 V23/Bell 202 Handshaking Sequence for an EV6240 Calling Modem via a 2-Wire Line
36 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.6.4 V23/Bell 202 Handshaking Sequence for an EV6240 Answering Modem via a 2-Wire Line Figure 9 is a flowchart illustrating the firmware handshaking sequence performed when an on-board CMX624 modem answers a call from an external V23/Bell 202 simulator/modem. The firmware assumes the external equipment has been configured to originate the call using the appropriate protocol. The states shown in the diagram are as follows: Answering Modem Entry Point On entry the Modem will have manually answered a call using the ATA command or auto-answered via the ring detect circuitry. In both cases the Modem will be off-hook. Start 2 second Billing Delay Timer State 10 Wait for Billing Delay Timer to expire. Check Communications Standard selected by user (Bell or ITU-T). If Bell goto State 14. State 11 Set up CMX624 to Tx 2100Hz Answer tone. Start 3.3 second Answer Tone Timer. State 12 Wait for Answer Tone Timer to expire. Turn off Tone o/p (silence). Start 80ms Silence Timer. State 13 Wait for Silence Timer to expire. State 14 Set up the CMX624 to Tx High Band FSK 1's (marks) State 15 Set up CMX624 to detect Low Band FSK. Start Validation Timer (setting stored in S18). When the Rx Energy flag is set the Rx data is monitored to ensure 95% of 1's are detected for 160ms. If 95% of Low Band FSK 1's are detected for 160ms Turn on Modem CD LED. Goto Data Transfer Mode. If Validation Timer expires before 95% of Low Band FSK 1's detected then Hang Up and Exit.
37 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Figure 9 V23/Bell 202 Handshaking Sequence for an EV6240 Answering Modem via a 2-Wire Line
38 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.6.5 V22/Bell 212A Handshaking Sequence for an EV6240 Calling Modem via a 2-Wire Line Figure 10 is a flowchart illustrating the firmware handshaking sequence performed when an on-board CMX644A modem originates a call to an external V22/Bell 212A simulator/modem. The firmware assumes the external equipment has been configured to answer the call using the appropriate protocol. The states shown in the diagram are as follows: Calling Modem Entry Point On entry the Modem will be off-hook, DTMF dialling and the required call progress monitoring completed. State 1 Start the Wait for Carrier after Dial Timer (setting stored in S7). Check Communications Standard selected by user (Bell or ITU-T). If Bell Set up CMX644A to detect 2225Hz Answer tone. Goto State 6. State 2 Set up CMX644A to detect 2100Hz Answer tone. Start transmitting the 1300Hz Calling tone (Cadence 0.6s on and 1.5s off). State 3 If the 2100Hz Answer tone is detected then start Validation Timer (setting stored in S18). If the 2100Hz Answer tone is detected for 1s stop transmitting the 1300Hz Calling Tone then goto State 4. If the Wait for Carrier after Dial Timer expires then Hang Up and Exit. State 4 Wait until silence occurs (2100Hz Answer tone not detected) Start a 60ms Timer. Set up CMX644A to detect 2225Hz Answer tone (set up will allow for frequency detection of either the 2225Hz Answer tone or High Band Unscrambled PSK 1's (marks)) Goto State 5. If Validation Timer expires the 2100Hz Answer tone has been present for too long so Hang Up and Exit.
39 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
State 5 Wait until 2225Hz Answer tone or High Band Unscrambled PSK 1's (marks) frequency has been detected. If 60ms Timer has expired. Goto State 6a. Else Silence period is too short so Hang Up and Exit. If the Wait for Carrier after Dial Timer expires then Hang Up and Exit. State 6 Wait until 2225Hz Answer tone is detected then goto State 6a. If the Wait for Carrier after Dial Timer expires then Hang Up and Exit. State 6a Start a 160ms Timer. If 160ms Timer expires goto State 7. If 2225Hz Answer tone is not detected then goto State 6. State 7 Disable 2225Hz Answer tone detection. Check Communications Standard selected by user (Bell or ITU-T). If Bell Start a 550ms Timer. Else Start a 450ms Timer. State 8 Wait until 450ms or 550ms Timer expires Set up the CMX644A to Tx Low Band Scrambled PSK 1's (marks). Restart Validation Timer (setting stored in S18). Set up CMX644A to detect High Band Scrambled PSK. State 9 When the PSK Carrier Detect flag is set the Rx data is monitored to ensure 95% of 1's are detected for 270ms. If 95% of High Band Scrambled PSK 1's are detected for 270ms Turn on Modem CD LED. Start a 770ms Timer. Goto State 10. If Validation Timer expires before 95% of High Band Scrambled PSK 1's detected then Hang Up and Exit. State 10 Wait until 770ms Timer expires then goto Data Transfer Mode.
40 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Figure 10 V22/Bell 212A Handshaking Sequence for an EV6240 Calling Modem via a 2-Wire Line
41 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.6.6.6 V22/Bell 212A Handshaking Sequence for an EV6240 Answering Modem via a 2-Wire Line Figure 11 is a flowchart illustrating the firmware handshaking sequence performed when an on-board CMX644A modem answers a call from an external V22/Bell 212A simulator/modem. The firmware assumes the external equipment has been configured to originate the call using the appropriate protocol. The states shown in the diagram are as follows: Answering Modem Entry Point On entry the Modem will have manually answered a call using the ATA command or auto-answered via the ring detect circuitry. In both cases the Modem will be off-hook. Start 2 second Billing Delay Timer State 11 Wait for Billing Delay Timer to expire. Check Communications Standard selected by user (Bell or ITU-T). If Bell goto State 15. State 12 Set up CMX644A to Tx 2100Hz Answer tone. Start 3.3 second Answer Tone Timer. State 13 Wait for Answer Tone Timer to expire. Turn off Tone o/p (silence). Start 80ms Silence Timer. State 14 Wait for Silence Timer to expire. Set up the CMX644A to Tx High Band Unscrambled PSK 1's (marks) with Guard Tone if selected. State 15 Set up CMX644A to Tx 2225Hz Answer tone. State 16 Set up CMX644A to detect Low Band Scrambled PSK. Start Validation Timer (setting stored in S18). When the PSK Carrier Detect flag is set the Rx data is monitored to ensure 95% of 1's are detected for 270ms. If 95% of Low Band Scrambled PSK 1's are detected for 270ms then goto State 17. If Validation Timer expires before 95% of Low Band Scrambled PSK 1's detected then Hang Up and Exit.
42 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
Figure 11 V22/Bell 212A Handshaking Sequence for an EV6240 Answering Modem via a 2-Wire Line
43 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
State 17 Set up the CMX644A to Tx High Band Scrambled PSK 1's (marks) with Guard Tone if selected. Start a 770ms Timer. State 18 Wait until 770ms Timer expires then turn on Modem CD LED and goto Data Transfer Mode. Note: Handshaking sequences are only performed when the EV6240 evaluation board is operated in the default Evaluation Mode (Modem Mode, AT@E0). To ensure successful handshaking and data transfer between the EV6240 and third party modems, users should ensure their third party modem is configured to the correct protocol (see third party AT command documentation). The EV6240 ITU-T handshaking firmware incorporates the V25 calling and answering procedures. The EV6240 ITU-T handshaking firmware will only allow the Calling Modem to connect with a modem that is using the V25 answering sequence. After dialling, the ITU-T calling modem will pulse the 1300Hz calling tone (0.6s on and 1.5s off) until the 2100Hz answer tone has been detected. This V25 calling procedure is not shown on Figures 8 and 10. Handshaking sequences may be aborted by pushing any key prior to entering data transfer mode. Whilst in data transfer mode the user can return to AT Command mode by typing the escape code sequence (+++). The escape code guard time must have expired to successfully return to the AT Command mode. The CD(Carrier Detect) LED's are only used during the Modem Mode handshaking sequences and data transfer.
1.6.6.7 Use of CMX644A with early EV6240 Kits
Early (Rev A) EV6240 kits were designed for evaluating the CMX644: They can be easily modified to evaluate the CMX644A.
(a) Connect capacitor C44 (1.0F ceramic) between U6 pin 23 and Ground (0v). (b) Connect capacitor C45 (1.0F ceramic) between U8 pin 23 and Ground (0v). (c) Reprogram the PIC C (U3) with the latest revision of firmware.
Rev B (and later) versions of the EV6240 kit do not require hardware modification for use with the CMX644A, although a later version of firmware, (available on the CML web site) may need to be programmed into the PIC C. The CMX644 can still be evaluated on modified EV6240 kits, providing an earlier version of firmware is used. Please contact CML for details.
44 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
1.7
1.7.1
Performance Specification
Electrical Performance
Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the Evaluation Kit. Min. -0.3 -0.3 -0.3 0 -20 +10 Max. 40.0 7.0 VDD + 0.3 +1.5 +20 +70 +35 Units V V V A mA C C
Supply (VIN - VSS) Supply (VDD - VSS) Voltage on any pin to VSS Current into or out of VIN and VSS pins Current into or out of any other pin Storage Temperature Operating Temperature
Operating Limits Correct operation of the Evaluation Kit outside these limits is not implied. Notes Supply (VIN - VSS) Supply (VDD - VSS) Operating Temperature External Clock Frequency for CMX624 External Clock Frequency for CMX644A External Clock Frequency (for C at 5.0V VDD) External Clock Frequency (for C at 3.3V VDD) Min. 8.0 3.0 +10 3.575965 3.686031 0.1 0.1 Max. 24.0 5.5 +35 3.583125 3.686769 20.0 4.0 Units V V C MHz MHz MHz MHz
Operating Characteristics For the following conditions unless otherwise specified: CMX624 Evaluation Device and Xtal Frequency = 3.579545MHz, C = 4.00MHz CMX644A Evaluation Device and Xtal Frequency = 3.6864MHz, C = 4.00MHz VDD = 3.3V to 5.0V, Tamb = +25C. Notes DC Parameters IDD (evaluation board - idle) AC Parameters Xtal/Clock Input to Evaluation Device `High' pulse width `Low' pulse width OSC1 Input to PIC C `High' pulse width `Low' pulse width Notes: 1 Min. Typ. 50.0 Max. Units mA
2 2
100 100
-
-
ns ns
50.0 50.0
-
-
ns ns
1. Relays not energised. 2. Timing for an external input to the CLOCK/XTAL pin.
Operating Characteristics - Timing Diagrams For CMX624/CMX644A timing information, refer to current CML CMX624/CMX644A Data Sheets.
45 (c) 1999 Consumer Microcircuits Limited UM6240/3
Evaluation Kit for CMX624/CMX644A
EV6240
CML does not assume any responsibility for the use of any circuitry described. No IPR or circuit patent licences are implied. CML reserves the right at any time without notice to change the said circuitry and this evaluation kit specification. Evaluation kits are supplied for the sole purpose of demonstrating the operation of CML products and are supplied without warranty. They are intended for use in a laboratory environment only and are not for re-sale, end-use or incorporation into other equipments. Operation of evaluation kits outside a laboratory environment is not permitted within the European Community. All software is supplied "as is" and is without warranty. It forms part of the evaluation kit and is licensed for use only in this kit, for the purpose of demonstrating the operation of CML products. Whilst all reasonable efforts are made to ensure that software contained in this product is virus free, CML accepts no responsibility whatsoever for any contamination which results from using this software and the onus for checking that the software is virus free is placed on the purchaser of this evaluation kit.
1 WHEATON ROAD WITHAM - ESSEX CM8 3TD - ENGLAND
Telephone: +44 1376 513833 Telefax: +44 1376 518247 e-mail: sales@cmlmicro.co.uk http://www.cmlmicro.co.uk
CML Microcircuits
COMMUNICATION SEMICONDUCTORS
CML Product Data
In the process of creating a more global image, the three standard product semiconductor companies of CML Microsystems Plc (Consumer Microcircuits Limited (UK), MX-COM, Inc (USA) and CML Microcircuits (Singapore) Pte Ltd) have undergone name changes and, whilst maintaining their separate new names (CML Microcircuits (UK) Ltd, CML Microcircuits (USA) Inc and CML Microcircuits (Singapore) Pte Ltd), now operate under the single title CML Microcircuits. These companies are all 100% owned operating companies of the CML Microsystems Plc Group and these changes are purely changes of name and do not change any underlying legal entities and hence will have no effect on any agreements or contacts currently in force. CML Microcircuits Product Prefix Codes Until the latter part of 1996, the differentiator between products manufactured and sold from MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX respectively. These products use the same silicon etc. and today still carry the same prefixes. In the latter part of 1996, both companies adopted the common prefix: CMX. This notification is relevant product information to which it is attached.
Company contact information is as below:
CML Microcircuits (UK)Ltd
COMMUNICATION SEMICONDUCTORS
CML Microcircuits (USA) Inc.
COMMUNICATION SEMICONDUCTORS
CML Microcircuits (Singapore)PteLtd
COMMUNICATION SEMICONDUCTORS
Oval Park, Langford, Maldon, Essex, CM9 6WG, England Tel: +44 (0)1621 875500 Fax: +44 (0)1621 875600 uk.sales@cmlmicro.com www.cmlmicro.com
4800 Bethania Station Road, Winston-Salem, NC 27105, USA Tel: +1 336 744 5050, 0800 638 5577 Fax: +1 336 744 5054 us.sales@cmlmicro.com www.cmlmicro.com
No 2 Kallang Pudding Road, 09-05/ 06 Mactech Industrial Building, Singapore 349307 Tel: +65 7450426 Fax: +65 7452917 sg.sales@cmlmicro.com www.cmlmicro.com
D/CML (D)/1 February 2002

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