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CDB61884 Octal T1/E1/J1 Line Interface Evaluation Board
Features
Socketed CS61884 Octal Line Interface Unit Binding post connectors for power and line interface connections Components supplied for all operational modes E1 75 , E1 120 and T1/J1 100 Socketed termination circuitry for easy testing Connector for IEEE 1149.1 JTAG Boundary Scan LED Indicators for Loss of Signal (LOS) and power Supports Hardware, Serial, and Parallel Host Modes Easy-to-use evaluation software On-board socketed reference clock oscillator
Description
The CS61884 evaluation board is used to demostrate the functions of a CS61884 Octal Line Interface Unit in either E1 75 , E1 120 , or T1/J1 100 applications. The evaluation board can be operated in either Hardware Mode or Host Mode. In Hardware Mode, switches and bed stake headers are used to control the line configuration and channel operations for all eight channels. In Host Mode (Serial or Parallel), the evaluation software, switches, and bed stake headers are used to control the line configuration and operating mode settings for each channel. In both Hardware and Host modes, the board may be configured for E1 75 , E1 120 , or T1/J1 100 operating modes. In both modes binding post connectors provide easy connections between the line interface connections of the CS61884 and any E1/T1 analyzing equipment, which may be used to evaluate the CS61884 device. Bed stake headers allow easy access to each channel's clock and data I/O digital interface. Eight LED indictors display the Loss of Signal (LOS) conditions for each channel during Hardware and Host modes. An LED indictor is used on the Interrupt pin to indicate a change of state.
ORDERING INFORMATION CS61884-IQ -40 to 85 C CDB61884
144-pin LQFP Evaluation Board
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com
This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice.
Copyright Cirrus Logic, Inc. 2002 (All Rights Reserved)
(c)
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TABLE OF CONTENTS
1. CDB61884 EVALUATION BOARD LAYOUT .......................................................................... 4 2. BOARD COMPONENT DESCRIPTIONS ................................................................................. 5 2.1 Power Connections ............................................................................................................ 5 2.2 Master Clock Selection ...................................................................................................... 5 2.3 Operating Mode Selection ................................................................................................. 6 2.4 Line Interface Connections ................................................................................................ 6 2.5 TXOE Selection ................................................................................................................. 6 2.6 Clock Edge Selection ......................................................................................................... 7 2.7 Jitter Attenuator Selection .................................................................................................. 7 2.8 Loopback Mode Selection .................................................................................................. 7 2.9 Line Length Selection ........................................................................................................ 7 2.10 Line Impedance Selection ................................................................................................ 8 2.11 Coder/Motorola/Intel Selection ......................................................................................... 8 2.12 G.772 Monitoring Address Selection ............................................................................... 8 2.13 Mux/Non-Mux/BITS Clock Selection ................................................................................ 8 2.14 Digital Signal Connections ............................................................................................... 9 2.15 LOS Indicators ................................................................................................................. 9 2.16 JTAG Connection ............................................................................................................. 9 2.17 Host Interface Connection ............................................................................................... 9 3. HOST SETUP DESCRIPTION .................................................................................................. 9 4. HOST SOFTWARE INTERFACE ............................................................................................. 9 4.1 Starting the Software ....................................................................................................... 10 4.2 Software Interface Buttons ............................................................................................... 10 4.2.1 Bit Indicator Description ...................................................................................... 10 4.3 Set All Button Description ................................................................................................ 10 4.3.1 Clear All Button Description ................................................................................ 11 4.3.2 Write All Button Description ................................................................................ 11 4.3.3 Read All Button Description ................................................................................ 11 4.4 Write Button Description .................................................................................................. 11 4.5 Read Button Description .................................................................................................. 11 4.6 Program Exit Function ..................................................................................................... 11
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at: http://www.cirrus.com/corporate/contacts/sales.cfm
IMPORTANT NOTICE "Preliminary" product information describes products that are in production, but for which full characterization data is not yet available. "Advance" product information describes products that are in development and subject to development changes. Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights of the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other parts of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. An export license and/or quota needs to be obtained from the competent authorities of the Chinese Government if any of the products or technologies described in this material is subject to the PRC Foreign Trade Law and is to be exported or taken out of the PRC. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.
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5. CS61884 CONFIGURATION SCREENS ............................................................................... 12 5.1 Choose Parallel Port Settings .......................................................................................... 12 5.2 Access and Configure the Read / Write Registers .......................................................... 12 5.2.1 Access Configuration Screens ............................................................................ 12 5.2.2 Select Register to Configure ............................................................................... 12 5.3 Loopback /Bits Clock Screen ........................................................................................... 13 5.4 LOS/AIS/DFM/JA Register Screen .................................................................................. 14 5.5 Transmitter Register Screen ............................................................................................ 15 5.6 AWG Register Screen ..................................................................................................... 16 5.7 Global Control Register Screen ....................................................................................... 17 6. BOARD CONFIGURATIONS ................................................................................................. 18 6.1 E1 75 Mode Setup ....................................................................................................... 18 6.2 E1 120 Mode Setup ..................................................................................................... 19 6.3 T1/J1 100 Mode Setup ................................................................................................ 20 7. EVALUATION HINTS ............................................................................................................. 21
LIST OF FIGURES
Figure 1. CDB61884 Board Layout ................................................................................................. 4 Figure 2. On-board Logic Power Selection ..................................................................................... 5 Figure 3. Master Clock Selections .................................................................................................. 5 Figure 4. Hardware/Host Mode Selection ....................................................................................... 6 Figure 5. Transmitter Enable Selection........................................................................................... 7 Figure 6. Clock Edge Selection....................................................................................................... 7 Figure 7. Jitter Attenuator Selection................................................................................................ 7 Figure 8. Loopback Mode Selection................................................................................................ 7 Figure 9. Switch S9 Settings ........................................................................................................... 8 Figure 10. Digital Signal Control/Access......................................................................................... 9 Figure 11. CDB61884 Software Opening Screen ......................................................................... 10 Figure 12. Register Bit Box ........................................................................................................... 10 Figure 13. Set All Button ............................................................................................................... 10 Figure 14. Clear All Button ............................................................................................................ 11 Figure 15. Write All Button ............................................................................................................ 11 Figure 16. Read All Button ............................................................................................................ 11 Figure 17. Write Button ................................................................................................................. 11 Figure 18. Read Button ................................................................................................................. 11 Figure 19. Opening Screen for Port and Address Selection Screen ............................................. 12 Figure 20. Loopback/G.703 Bits Clock Selection Screen ............................................................. 13 Figure 21. LOS/AIS/DFM/JA ERR Status/Enable Selection Screen ............................................. 14 Figure 22. Transmitter Register Screen ........................................................................................ 15 Figure 23. AWG Registers Screen................................................................................................ 16 Figure 24. Global Control Screen.................................................................................................. 17
LIST OF TABLES
Table 1. External Impedance Resistor Values ...................................................................................... 6 Table 2. Protection Resistor Selection ................................................................................................. 6 Table 3. Switch Settings for Host Mode ................................................................................................ 9 Table 4. E1 75 Operational Mode Switch/Jumper Position ............................................................. 18 Table 5. E1 120 Operational Mode Switch/Jumper Position ........................................................... 19 Table 6. T1/J1 100 Operational Mode Switch/Jumper Position ....................................................... 20
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1. CDB61884 EVALUATION BOARD LAYOUT
Figure 1. CDB61884 Board Layout
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2. BOARD COMPONENT DESCRIPTIONS 2.1 Power Connections 2.2 Master Clock Selection
Power for the evaluation board is supplied by an external +3.3 V DC power supply. A +5 V DC power supply can also be connected to the on-board control logic. The LED labeled "D3" will illuminate when power is supplied to the on-board control logic.
- Connect the +3.3 VDC power supply to the +3V binding post and the +5 VDC power supply to the +5 V binding post if 5 Volt logic is required - Jumper J13 shown in Figure 2 allows all the external logic on the evaluation board to be connected to either +3 V or +5 V binding post.
J13 3V V L O G IC 5V O n -b o a rd lo g ic c o n n e c te d to + 3 V b in d in g p o s t J13 3V
In both hardware and host modes, the MCLK pin is configured by placing a short block on one of the positions of bed stake header J1. Figure 3 shows the different positions of the J1 bed stake header.
EXTERNAL SOURCE EXTERNAL SOURCE
OSCILLATOR
OSCILLATOR
HIGH
HIGH
GND
MCLK J1 Data Recovery Mode
EXTERNAL SOURCE
GND
MCLK J1 On-board Oscillator
EXTERNAL SOURCE
OSCILLATOR
HIGH
OSCILLATOR
HIGH
GND
MCLK
V L O G IC 5V O n -b o a rd lo g ic c o n n e c te d to + 5 V b in d in g p o s t
GND
MCLK J1 Receivers Powered Down
J1 External Clock Source
Figure 3. Master Clock Selections
- A 2.048 MHz clock oscillator is provided on the evaluation board for use as the on-board clock source for all E1 modes. - A 1.544 MHz clock oscillator is also provided with the evaluation board for use as the onboard clock source for the T1/J1 operation modes. - A BNC connector (labeled J16) provides the connection for an external clock source.
Figure 2. On-board Logic Power Selection
- To measure the current consumption of only the CS61884 device, place a short block on Jumper J13 to connect the Vlogic power supplies to the +5 V binding post. This will isolate the CS61884 device from all the onboard logic, to allow the current measurement to be made at the +3 V binding post.
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2.3 Operating Mode Selection
The jumpers listed in Table 2 are used to place or bypass 1 K protection resistors in series with the receive line signals (RTIP/RRING). These resistors are used for receiver protection while in external line impedance matching mode and should not be used during internal line impedance matching mode. To place the 1 K resistors in series with the receive line signals, remove the short blocks from each of the jumpers described in Table 2. To bypass the 1 K resistors, place a short block on each jumper shown in Table 2. Table 2. Protection Resistor Selection
MODE Selects Parallel Host Mode
Jumper J29 J30 J37 J38 J46 J47 J54 J55 J65 J66 J73 J74 J81 J82 J89 J90 Description Channel 0 RRING signal Channel 0 RTIP Signal Channel 1 RTIP Signal Channel 1 RRING Signal Channel 2 RRING Signal Channel 2 RTIP Signal Channel 3 RTIP Signal Channel 3 RRING Signal Channel 4 RRING Signal Channel 4 RTIP Signal Channel 5 RTIP Signal Channel 5 RRING Signal Channel 6 RRING Signal Channel 6 RTIP Signal Channel 7 RTIP Signal Channel 7 RRING Signal
The operating mode for the CS61884 can be selected by setting switch S15 to one of the positions shown in Figure 4.
S15 Hardware Hardware S15 Hardware S15
Serial Host Parallel Host MODE
Serial Host Parallel Host MODE
Serial Host Parallel Host
Selects Hardware Mode
Selects Serial Host Mode
Figure 4. Hardware/Host Mode Selection
2.4
Line Interface Connections
In both hardware and host modes, the receive line signals (RTIP/RRING) are connected to the binding post labeled RXT 0-7 and RXR 0-7. The line signals from the binding posts are coupled to the device through two octal transformers (T1 and T9). The receivers of the device use external resistors to match the line impedance. These resistors are socketed for ease in changing the line impedance, for internal or external line impedance matching. During internal line impedance matching mode, the resistor values are the same (15 ) for all modes of operation: E1 75 , E1 120 or T1/J1 100 . During external line impedance matching mode the receiver resistors need to be change to the values shown in Table 1.
Table 1. External Impedance Resistor Values T1/J1 100 12.5 E1 75 9.31 E1 120 15
The transmit line signals (TTIP/TRING) from the device are coupled to the line binding post (TXT 07 and TXR 0-7) through two octal transformers (T1 and T9). External protection circuitry such as diodes or chokes are recommended for protection. For further information on line protection refer to Application Note AN34, "Secondary Line Protection for T1 and E1 Line Cards" (AN34REV1 SEP '94).
2.5
TXOE Selection
Jumper J23 is used to enable or High-Z all eight transmitters in both hardware and host mode. A shorting block on Jumper J23 places all the transDS485DB1
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mitters in a high impedance state. Removing the shorting block, enables the transmitters. See
HI TXOE HI TXOE
In host mode, switch S10 has no effect on the CS61884 device and should be set to the open (middle) position.
S10 HIGH HIGH S10 HIGH S10
J23
J23
LO
LO
OPEN OPEN LOW JASEL Hardware Mode - JA placed in transmit path JASEL Hardware Mode - JA Disabled OPEN
Enable all eight transmitters
Hi-Z all eight transmitters
LOW
Figure 5. Transmitter Enable Selection Figure 5.
LOW JASEL Hardware Mode - JA placed in receive path
2.6
Clock Edge Selection
In clock/data recovery mode, jumper J93 selects the edge of RCLK and SCLK on which the RPOS/RDATA, RNEG, and SDO data signals are valid. When in data recovery mode, jumper J93 selects the output polarity of RPOS/RNEG. The function of J93 applies to both the hardware and host mode. Figure 6 shows the settings for jumper J93 and the effect in both clock/data recovery and data recovery only mode.
HI CKLE Clock/Data Recovery RPOS/RNEG = falling edge RCLK SDO = rising edge SCLK Data Recovery RPOS/RNEG polarity active high Clock/Data Recovery RPOS/RNEG = rising edge RCLK SDO = falling edge SCLK Data Recovery RPOS/RNEG polarity active low J93
Figure 7. Jitter Attenuator Selection
2.8
Loopback Mode Selection
In hardware mode, the Loopback modes are configured with switches S1 through S8 (0-7). Figure 8 shows the three different settings for all eight loop back switches. In host mode, switches S1 through S8 must be set to the NONE (middle) position to allow host interface control.
S1 - S8 Rloop none Lloop S1 - S8 Rloop none Lloop S1 - S8 Rloop none Lloop 0-7 Hardware Mode Selects no Loopback 0-7 Hardware Mode Selects local Loopback
LO
HI CKLE
0-7 Hardware Mode Selects Remote Loopback
LO J93
Figure 6. Clock Edge Selection
Figure 8. Loopback Mode Selection
2.7
Jitter Attenuator Selection
2.9
Line Length Selection
In hardware mode, switch S10 (JASEL) controls the position of the jitter attenuator for all eight channels. The corner frequency and FIFO length can not be changed in hardware mode. Figure 7 shows the settings for switch S10.
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In hardware mode, the transmit pulse shapes for E1 75 , E1 120 and T1(J1) 100 are selected with switches S12 through S14 (LEN 2-0). Refer to the CS61884 Data Sheet for the correct settings.
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In host mode, switches S12 through S14 (LEN2-0) must be set to the open (middle) position to allow host processor control. mode. Figure 9 shows the settings for switch S9 #1 in hardware and parallel host mode.
2.12
G.772 Monitoring Address Selection
2.10
Line Impedance Selection
In hardware mode, switch S11 (CBLSEL), in combination with the LEN 2-0 switches are used to set the internal or external line impedance for all eight channels. Refer to the CS61884 Data Sheet for the CBLSEL settings. In host mode, switch S11 has no effect on the CS61884 device and should be set to the NC (middle) position.
In hardware mode, the address for the G.772 NonIntrusive monitoring feature is selected by switches 3 through 7 (A4-A0) inside switch block S9. When switches 3 through 7 inside switch block S9 are all set to the closed "LOW" position, the G.772 NonIntrusive monitoring function is disabled. Refer to the CS61884 Data Sheet for more address settings. In host mode, switches 3 through 7 inside switch block S9 must be set to the open (high) position so that the host interface can have control over the address signals during parallel host modes.
2.11
Coder/Motorola/Intel Selection
In hardware mode, switch 1 (MOT/INTL) inside switch block S9 (S9 #1) is used to enable AMI or HDB3/B8ZS line coding. Setting switch S9 #1 to the open (HIGH) position enables AMI coding and the closed (low) position enables HDB3/B8ZS coding. In host mode, switch S9 #1 is used to select either Motorola or Intel parallel host mode. When set to the open (HIGH) position Intel mode is selected and the closed (LOW) position enables Motorola
2.13
Mux/Non-Mux/BITS Clock Selection
In hardware mode, switch 2 (MUX) inside switch block S9 enables or disables the Channel #0 G.703 BITS Clock function. Placing switch S9 #2 in the open "HIGH" position enables Channel #0 G.703 BITS Clock function and the closed "LOW" position disables this function. In host mode, switch S9 #2 (MUX) is used to select multiplex or non-multiplex. Placing switch S9 #2
S9 A0 A1 A2 A3 A4 MUX MOT_\INTL 1234567 OPEN
S9 A0 A1 A2 A3 A4 MUX MOT_\INTL 1234567 OPEN
S9 A0 A1 A2 A3 A4 MUX MOT_\INTL 1234567 OPEN HI
LO
HI
LO
HI
LO
Hardware Mode - Enables AMI coding & enables Channel 0 G.703 Bits Clock function
Hardware Mode - Enables HDB3/B8ZS coding & disables Channel 0 G.703 Bits Clock function
Figure 9. Switch S9 Settings
Parallel Host Mode Enables Motorola NonMultiplex parallel host mode
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in the open "HIGH" position selects multiplex and the closed "LOW" position selects Non-multiplex pins. The ALOS 0-7 LEDs will illuminate when the corresponding receiver has detected a loss of signal condition. Refer to the CS61884 Data Sheet for LOS conditions.
2.14
Digital Signal Connections
There are eight fourteen pin bed stake headers (labeled J4 through J11) that provide access to the digital signals used to interface with back-end devices (framers, mappers, ASIC, etc.) and all eight LOS signals, in both hardware and host mode. Figure 10 shows the layout for one of the eight 14pin bed stake headers used to access the back-end digital signals, LOS signals and the different settings for the TCLK/TNEG pins.
Bi-polar Mode TCLK # TCLK # TCLK # TPOS # TNEG # TNEG # LOS # Uni-Polar Mode Active TCLK # TCLK # TCLK # TPOS # TNEG # TNEG # LOS #
2.16
JTAG Connection
A 5-pin bed stake header (J60) is provided to allow easy access to the IEEE 1149.1 JTAG Boundary Scan signals from the device.
2.17
Host Interface Connection
Connector J12 is used to connect the CS61884 evaluation board to the host computer, through a standard 25 pin male to female parallel port cable. No external Controller board is required for host interface connection. This connector is used for both serial and parallel interface.
3. HOST SETUP DESCRIPTION
Place the switches shown in Table 3 to the stated configuration before setting the Mode switch (S15) to Serial or Parallel host mode. Refer to the Figure 4 on page 6 for switch S15 settings. Table 3. Switch Settings for Host Mode
TAOS active when MCLK present RZ mode active when MCLK absent TCLK # TCLK # TCLK # TPOS # TNEG # TNEG # LOS # Transmitters High-Z TCLK # TCLK # TCLK # TPOS # TNEG # TNEG # LOS #
J1
RCLK # Vlogic GND RPOS # RNEG # Vlogic GND
J1
RCLK # Vlogic GND RPOS # RNEG # Vlogic GND
Switch S1 through S8 S9 # 3 through # 7 S10 S11 S12 through S14
Position NONE (middle) OPEN (low) OPEN (middle) NC (middle) OPEN (middle)
RCLK # Vlogic GND RPOS # RNEG # Vlogic GND
RCLK # Vlogic GND RPOS # RNEG # Vlogic GND
- Switches #1 and #2 inside of switch block S9 are used in parallel host mode to select Motorola, Intel, multiplex or Non-multiplex modes. Switch S9 #1 and #2 are not used in Serial host mode.
J1
J1
4. HOST SOFTWARE INTERFACE
The software provided with the CDB61884 evaluation board is used to control and monitor the CS61884 device. The program is designed to automatically read back each bit after each write. If the bit is read back incorrectly an error will occur. The
Figure 10. Digital Signal Control/Access
2.15
LOS Indicators
The two 4-LED packs D1 and D2 (labeled ALOS 0-7) represent the LOS signal status for LOS 0-7
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Figure 11. CDB61884 Software Opening Screen
following registers do not have the automatic read back function:
- AWG Phase Address - AWG Phase Data, - Software Reset registers.
4.2.1
Bit Indicator Description
4.1
Starting the Software
There is no installation procedure associated with the CS61884 software, simply click on the appropriate CS61884 software icon (95/98 or NT) on the CD in the CDB61884 kit.
Note: The software can be used with Windows(R) 95(R), 98(R), NT(R) or 2000(R).
The Register Bit checkbox shown in Figure 12 shows one bit, each register consists of eight bits (0 through 7). The grayed-out bits in some registers are bits that can not be accessed. Figure 12 shows a bit with a check mark and without a check mark. A check represents a "1" and no check mark equals a "0".
Figure 12. Register Bit Box
Figure 11 shows the opening screen that appears after you have launched the software.
4.3
Set All Button Description
4.2
Software Interface Buttons
The following subsections explain the functions of buttons that are common to the register configuration screens in the CS61884 software.
The Set All button shown in Figure 13 is used to set all the bits in the corresponding register to 1s. This button is placed to the left of each register that has write access.
Figure 13. Set All Button
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4.3.1 Clear All Button Description
Figure 16. Read All Button
The CLR All Button shown Figure 14 is used to set all the bits in the corresponding register to 0s. This button is placed to the left of each register that has write access.
4.4
Write Button Description
Figure 14. Clear All Button
The Write button shown in Figure Figure 17 writes the bits of the corresponding register. This button is located to the right of every register that allows write access.
4.3.2
Write All Button Description
Figure 17. Write Button
The Write All button shown in Figure 15 writes every bit of every register on the current register screen. This button is located in the bottom right corner of each register screen.
4.5
Read Button Description
The Read button shown in Figure 18 reads the bits of the corresponding register. This button is located to the right of every register.
Figure 15. Write All Button
4.3.3
Read All Button Description
Figure 18. Read Button
The Read All button shown in Figure 16 reads every bit of every register on the current register screen. This button is located in the bottom left corner of each register screen.
4.6
Program Exit Function
To exit any of the register screens simple press the X in the top right hand corner of each screen. This
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5. CS61884 CONFIGURATION SCREENS 5.1 Choose Parallel Port Settings 5.2
The opening screen shown before in Figure 11 and now in Figure 19 is used for the following configuration activities:
- Select the parallel port mode of operation - Select the parallel port address
Access and Configure the Read / Write Registers
You also use the opening screen to access the tabbed configuration screens for the Read / Write Registers.
5.2.1
Access Configuration Screens
Click the appropriate radio button to choose the operational modes you wish to use.
Important Notes: 1. If the mode of operation does not match the mode switches on the evaluation board, an error will occur. 2. If the parallel port address does not match the address of the control parallel port, access to the register bits will not be permitted.
Click on the Read/ Write Registers button on the opening screen to start configuring these registers.
5.2.2
Select Register to Configure
When the next screen appears, select the desired register screen by clicking on one of the TABs labeled Loopback/Bits Clk, LOS/AIS/DFM, XMIT, AWG, or GCR at the top of the Read/Write Register screen.
Figure 19. Opening Screen for Port and Address Selection
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5.3 Loopback /Bits Clock Screen
The Loopback /Bits Clock Register tabbed screen shown in Figure 20 allows access to the following registers:
- Remote loop back - Analog loop back - Digital Loopback - G.703 Bits Clock
Figure 20. Loopback/G.703 Bits Clock Selection Screen
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5.4 LOS/AIS/DFM/JA Register Screen
The LOS/AIS/DFM/JA Register tabbed screen shown in Figure 21 allows access to the following registers:
- LOS Status - LOS Interrupt Enable - LOS Interrupt Status - LOS/AIS Mode Enable - DFM Status - DFM interrupt Status - DFM Interrupt Enable - AIS Status - AIS Interrupt Enable - AIS Interrupt Status - JA Error Interrupt Enable - JA Error Interrupt Status
.
Figure 21. LOS/AIS/DFM/JA ERR Status/Enable Selection Screen
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5.5 Transmitter Register Screen
The Transmitter Register screen shown in Figure 22 consists of the following registers:
- Automatic TAOS - TAOS Enable - Performance Monitor - Line Length Channel ID - Line Length Data - Output Disable.
Note: Some indictor boxes (bits) in the Performance Monitor, Line Length Channel ID, and Line Length Data registers are grayed out, this means that these bits can not be accessed.
Figure 22. Transmitter Register Screen
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5.6 AWG Register Screen
The AWG Register screen shown in Figure 23 allows access to the following AWG registers:
- AWG Broadcast - AWG Enable - AWG Overflow Interrupt Enable - AWG Overflow Interrupt Status - AWG Phase Address - AWG Phase Data.
The AWG Phase Address Register is broken up into two easy-to-use data input boxes: the Chan Address (i.e., channel address) and the Sample Address. For example, to access the AWG function for channel 5, write 05 into the Chan Address input box. This is the same for every channel. The Chan Address, Sample Address, and Phase Data input boxes use the values discussed in the AWG section of the CS61884 Data Sheet.
Figure 23. AWG Registers Screen
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5.7 Global Control Register Screen
Figure 24 shows the Global Control Register (GCR) register screen, The GCR register screen consists of the following registers:
- Software reset - ID registers.
Each bit in the Global Control Register can be access by writing directly to the bit in the Global Control Register on the top of this screen or by changing the radio buttons in one of the following windows:
- Jitter Attenuator - JA FIFO Length - AWG Auto Increment - Raisen - Coden - Jitter Corner Freq.
The variables listed above change the corresponding bit in the Global Control Register. The Software Reset Register is a write only register and will clear after the write. The ID Register is a read only register.
Figure 24. Global Control Screen
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6. BOARD CONFIGURATIONS 6.1 E1 75 Mode Setup
Table 4 shows the position of the different switches and jumpers used to set up the CDB61884 evaluation board to operate in E1 75 Hardware, Serial Host and Parallel Host operational modes. Before selecting Host mode, the switches in Table 4 in bold should be set to the position stated. Table 4. E1 75 Operational Mode Switch/Jumper Position
Switches/Jumpers S15 (MODE) S1 (0) S2 (1) S3 (2) S4 (3) S5 (4) S6 (5) S7 (6) S8 (7) S9 #1 (MOT_\INTL) S9 #2 (MUX) S9 #3 (A4) S9 #4 (A3) S9 #5 (A2) S9 #6 (A1) S9 #7 (A0) S10 (JASEL) S11 (CBLSEL) S12 (LEN 2) S13 (LEN 1) S14 (LEN 0) J13 (VLOGIC) J1 (MCLK) J93 (CLKE) J23 (TXOE) Hardware HARDWARE LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION HIGH LOW (Note 4) LOW (Note 5) LOW (Note 5) LOW (Note 5) LOW (Note 5) LOW (Note 5) ANY POSITION HIGH (Note 6) LOW LOW LOW 3V OSCILLATOR OPEN OPEN Serial Host (Note 3) SERIAL HOST NONE NONE NONE NONE NONE NONE NONE NONE HIGH HIGH HIGH HIGH HIGH HIGH HIGH OPEN NC OPEN OPEN OPEN 3V OSCILLATOR OPEN OPEN Parallel Host (Note 3) PARALLEL HOST NONE NONE NONE NONE NONE NONE NONE NONE MOTOROLA/INTEL MUX/NON-MUX HIGH HIGH HIGH HIGH HIGH OPEN NC OPEN OPEN OPEN 3V OSCILLATOR OPEN OPEN
3. Connect a standard 25-pin male to female parallel port cable to connector J12 and the control PC. 4. Set "HIGH" to enable BITS Clock Recovery function for only Channel #0 in Hardware Mode. 5. Other settings may be used to enter G.772 Non-Intrusive Monitoring in Hardware Mode. Refer to the CS61884 Data Sheet for other settings. 6. Set "LOW" to disable receiver Internal line impedance matching function. The external resistors for all eight receivers must be changed to 9.31 to properly match the input line impedance.
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DS485DB1
CDB61884
6.2 E1 120 Mode Setup
Table 5 shows the position of the different switches and jumpers used to set up the CDB61884 evaluation board to operate in E1 120 Hardware, Serial Host and Parallel Host operational modes. Before selecting host mode, the switches in Table 5 in bold should be set to the position stated. Table 5. E1 120 Operational Mode Switch/Jumper Position
Switches/Jumpers S15 (MODE) S1 (0) S2 (1) S3 (2) S4 (3) S5 (4) S6 (5) S7 (6) S8 (7) S9 #1 (MOT_\INTL) S9 #2 (MUX) S9 #3 (A4) S9 #4 (A3) S9 #5 (A2) S9 #6 (A1) S9 #7 (A0) S10 (JASEL) S11 (CBLSEL) S12 (LEN 2) S13 (LEN 1) S14 (LEN 0) J13 (VLOGIC) J1 (MCLK) J93 (CLKE) J23 (TXOE) Hardware HARDWARE LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION HIGH LOW (Note 4) LOW (Note 5) LOW (Note 5) LOW (Note 5) LOW (Note 5) LOW (Note 5) ANY POSITION NC (Note 7) LOW LOW LOW 3V OSCILLATOR OPEN OPEN Serial Host (Note 3) SERIAL HOST NONE NONE NONE NONE NONE NONE NONE NONE OPEN OPEN OPEN OPEN OPEN OPEN OPEN OPEN NC OPEN OPEN OPEN 3V OSCILLATOR OPEN OPEN Parallel Host (Note 3) PARALLEL HOST NONE NONE NONE NONE NONE NONE NONE NONE MOTOROLA/INTEL MUX/NON-MUX OPEN OPEN OPEN OPEN OPEN OPEN NC OPEN OPEN OPEN 3V OSCILLATOR OPEN OPEN
7. Set to "NC" to disable receiver Internal line impedance matching function. The external resistors for all eight receivers must be changed to 15 to properly match the input line impedance.
DS485DB1
19
CDB61884
6.3 T1/J1 100 Mode Setup
Table 6 shows the position of the different switches and jumpers used to set up the CDB61884 evaluation board to operate in T1/J1 100 Hardware, Serial Host and Parallel Host operational modes. Before selecting host mode the switches in Table 6 in bold should be set to the position stated. Table 6. T1/J1 100 Operational Mode Switch/Jumper Position
Switches/Jumpers S15 (MODE) S1 (0) S2 (1) S3 (2) S4 (3) S5 (4) S6 (5) S7 (6) S8 (7) S9 #1 (MOT_\INTL) S9 #2 (MUX) S9 #3 (A4) S9 #4 (A3) S9 #5 (A2) S9 #6 (A1) S9 #7 (A0) S10 (JASEL) S11 (CBLSEL) S12 (LEN 2) S13 (LEN 1) S14 (LEN 0) J13 (VLOGIC) J1 (MCLK) J93 (CLKE) J23 (TXOE) Hardware HARDWARE LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION LOOP FUNCTION OPEN (HIGH) LOW (Note 4) LOW (Note 5) LOW (Note 5) LOW (Note 5) LOW (Note 5) LOW (Note 5) ANY POSITION NC or HIGH (Note 8) LOW (Note 9) HIGH (Note 9) HIGH (Note 9) 3V OSCILLATOR OPEN OPEN Serial Host (Note 3) SERIAL HOST NONE NONE NONE NONE NONE NONE NONE NONE HIGH HIGH HIGH HIGH HIGH HIGH HIGH OPEN NC OPEN OPEN OPEN 3V OSCILLATOR OPEN OPEN Parallel Host (Note 3) PARALLEL HOST NONE NONE NONE NONE NONE NONE NONE NONE MOTOROLA/INTEL MUX/NON-MUX HIGH HIGH HIGH HIGH HIGH OPEN NC OPEN OPEN OPEN 3V OSCILLATOR OPEN OPEN
8. Set "LOW" to disable receiver Internal line impedance matching function. The external resistors for all eight receivers must be changed to 12.5 to properly match the input line impedance. 9. Selects T1/J1 100 0ft-133ft line length settings. These pins can be changed to select other T1/J1 100 line length settings. Refer to the CS61884 Data Sheet for other settings.
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DS485DB1
CDB61884
7. EVALUATION HINTS
- Pin #1 of the socket is indicated by an arrow with U1 below it. - A short in the desired position must be placed on Jumper J13 to connect the CS61884 to one of the power supply binding post. LED D3 will illuminate when jumper J13 is connected to a power supply. - Before selecting any host mode place the CBLSEL, LOOP, ADDRESS, LEN and JASEL switches in the open or none position. - When using the CS61884 device in internal match impedance mode, be sure that the 1 K resistors are not in series with the receivers.
DS485DB1
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