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 CM2400-01 Universal Serial Bus Transceiver with Level Translator
Features
* * * * * * * * * * * * Complies with USB Specification Rev 1.1 & 2.0 Supports Full Speed Mode (12Mbit/sec.) Integrated 5V to 3.3V regulator Used as a USB device transceiver VBUS disconnection indication through VP, VM Two single-ended receivers with hysteresis USB Detection of VBUS via level translator Stable RCV output during SE0 condition Low power operation Supports 1.65V to 3.3V I/O voltage levels Full industrial operating range -40 to 85 C Available in small HBCC16 package
Product Description
The CM2400-01HB Universal Serial Bus (USB) transceiver is fully compliant with the USB specification Rev 1.1 and 2.0. It supports a speed of 12Mbits/s (Full Speed Mode). An internal level shifter allows interface to Application Specific IC's (ASIC's) and Programmable Logic Devices (PLD's) running at core voltages of 1.65V to 3.3V. An internal 5V to 3.3V regulator is used to power the CM2400-01HB USB transceiver via the USB supply VBUS. A voltage comparator has been integrated to detect the VBUS voltage via the level translator. This insures compatibility with the processor's core voltage and outputs to the USB_DET pin. A high level on the USB_DET output indicates that an active USB cable is attached. Single and differential input modes are selectable by a mode input pin (MODE). This device is ideal for portable electronic devices such as mobile phones, digital still cameras, PDAs (Personal Digital Assistants) and IAs (Information Appliances). The CM2400-01HB is packaged in a small form-factor 16-lead HBCC package to conserve board space.
Applications
* * * * Wireless handsets Digital still cameras PDAs (Personal Digital Assistants) IAs (Information Appliances)
Simplified Block Schematic
VCC Voltage Detector
ENABLE
USB_DET
Voltage Regulator
VBUS VREG
OE VMO/FSEO VPO/VO MODE RCV SPND VP
LEVEL TRANSLATOR
ENUM
VPU
D+ D-
VM
GND
(c) 2003 California Micro Devices Corp. All rights reserved. 10/01/03
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1
CM2400-01
PACKAGE / PINOUT DIAGRAM
USB DET
8 9
MODE
5 6
VCC
7
SPND VM VP RCV
D-
4 3 2
HBCC16
10 D+ 11 VPO/VO 12 VMO/FSEO 13 VREG
GND
17
OE
1
16 15 14
ENUM
Note: This drawing is not to scale.
HBCC16 Package Bottom View
PIN DESCRIPTIONS
PINS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NAME OE RCV VP VM SPND MODE VCC USB_DET DD+ VPO/VO VMO/FSEO VREG VBUS VPU DESCRIPTION Input for Output Enable (Active low). Enables transceiver driver to transmit data on the USB bus. When OE pin = LOW, driver circuitry is enabled. Differential receiver output of D+ and D- input data lines. The output state of RCV is preserved and stable during an SE0 condition. Single-ended D+ receiver output for detection of a single-ended zero or error conditions Single-ended D- receiver output for detection of a single-ended zero or error conditions. Suspend input. Allows the device to enter a low power state while the USB is inactive. Mode input. Selects between differential (VPO, V MO) and single-ended mode (VO, FSEO). Supply voltage for digital I/O pins. Voltages supported: 1.65 to 3.3V. I/O level USB detect output. Logic High indicates that a USB cable is present. Negative USB data connection. Positive USB data connection. In full-speed connect mode, connect to VPU via a 1.5k resistor. Tolerance of this resistor is defined in the USB specification REV 1.1 & 2.0 Driver data input. Driver data input. Regulated supply voltage output during USB operation of VBUS. 1uF decoupling capacitor is required. Supply voltage input. Can be directly connected to USB VBUS. Pull-up supply voltage. Pin function is controlled by input ENUM.
(c) 2003 California Micro Devices Corp. All rights reserved.
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VBUS
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VPU
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CM2400-01
PIN DESCRIPTIONS
16 17 ENUM GND Enumerate, allows software to control connection of the external pull-up via the level translator. If ENUM = LOW then VPU is floating. If ENUM = HIGH then VPU is internally connected to VREG. The ground terminal is connected to the exposed diepad (heatsink).
Ordering Information
PART NUMBERING INFORMATION
PADS 16 Package HBCC16 Ordering Part Number1 CM2400-01HB Part Marking CMD240001A
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER ESD Protection (HBM, All Pins, See Note 1) VBUS VCC VI (INPUT) Storage Temperature Range Operating Temperature Range Junction RATING +2000 [GND - 0.5] to +5.5 [GND - 0.5] to +6.0 [GND - 0.5] to [VCC + 0.5] -65 to +150 -40 to +150 UNITS V V V V C C
Note 1: Equivalent to discharging a 100pF capacitor via a 1.5k resistor (Human body model).
STANDARD (RECOMMENDED) OPERATING CONDITIONS
SYMBOL VBUS VCC VI VI(AI/O) TAMB PARAMETER USB VBUS Supply DC System Supply DC Input Voltage Analog I/O Pins (D+, D-) Ambient Operating Temperature Range MIN 4.1 1.65 0 0 -40 TYP 5.0 3.3 MAX 5.5 3.6 VCC 3.6 85 UNITS V V V V C
(c) 2003 California Micro Devices Corp. All rights reserved. 10/01/03
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CM2400-01
Specifications (cont'd)
ELECTRICAL OPERATING CHARACTERISTICS1
Supply Pins (V BUS = 4.1V to 5.5V; VCC = 1.65V to 3.6V) SYMBOL VREG IBUS IBUS(IDLE) IBUS(SUSP) ICC ICC(STAT) PARAMETER Regulated supply output Operating supply current Supply current during full speed idle and SE0 Supply current during suspend Operating I/O supply current Static I/O supply current CONDITIONS Unloaded Full-speed TX and RX; CL=50pF on D+/D- outputs Full-speed idle; Note 2 SPND = HI; Note 2 Full-speed TX and RX Full-speed idle, SE0 or suspend VBUS not connected VBUS not connected; ENUMERATE = LOW Supply lost (USB_D low) Supply present VTH(BUS) Hysteresis VTH(VCC) VCC supply detection threshold. Supply lost (USB_D low) Supply present VTH(VCC) Hysteresis Digital Pins (VBUS = 4.1V to 5.5V; VCC = 1.8V 0.15V) SYMBOL VIL VIH VOL VOH PARAMETER Logic LOW input voltage Logic HIGH input voltage Logic LOW output voltage Logic HIGH output voltage IOL = 100A IOL = 2mA IOH = 100A IOH = 2mA CONDITIONS 1.50 1.25 1.2 0.15 0.40 CONDITIONS MIN TYP MAX 0.5 UNITS V V V V V V 1.4 200 4.1 100 0.5 MIN 3.0 TYP 3.3 MAX 3.6 10 500 100 2.0 10.0 10.0 10.0 3.6 UNITS V mA A A mA A A A V V mV V V mV
ICC(SHARE) Supply current during sharing mode IDX(SHARE) D+/D- load current during sharing mode VTH(VBUS) VBUS supply detection threshold, USB_D output
Digital Pins (VBUS = 4.1V to 5.5V; VCC = 2.5V 0.2V) SYMBOL VIL VIH VOL VOH PARAMETER Logic LOW input voltage Logic HIGH input voltage Logic LOW output voltage Logic HIGH output voltage IOL = 100A IOL = 2mA IOH = 100A IOH = 2mA 2.15 1.90 1.7 0.15 0.40 MIN TYP MAX 0.7 UNITS V V V V V V
Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified. Note 2: Excluding any load current and VPU/VSW source current to 1.5k and 15k pull-up and pull-down resistors (200 A).
(c) 2003 California Micro Devices Corp. All rights reserved.
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CM2400-01
Specifications (cont'd)
ELECTRICAL OPERATING CHARACTERISTICS (CONT'D)
Analog I/O Pins (V BUS = 4.1V to 5.5V; VCC = 1.65V to 3.6V) SYMBOL VDI VCM VIL VIH VHYS VOL VOH ILZ CIN RSW ZDRV PARAMETER Differential receiver input sensitivity Differential receiver common mode voltage Single-ended receiver logic LOW input voltage Single-ended receiver logic HIGH input voltage Single-ended receiver Hysteresis voltage Logic LOW output voltage Logic HIGH output voltage OFF-state leakage current Transceiver Capacitance Internal switch resistance at VPU Driver output impedance (includes 33 ohm 1% resistor) PARAMETER Rise time Fall time Differential rise / fall time matching (tFR/tFF) Output signal crossover voltage Measured with steady-state drive; See Note 3 33 Pin to GND 10 30 39 44 RL = 1.5K tied to +3.6V RL = 15K tied to GND 2.8 2.0 0.4 0.7 0.3 3.6 +1 CONDITIONS MIN 0.2 0.8 2.5 0.8 TYP MAX UNITS V V V V V V V A pF
| VI(D+) - VI(D-) |
Driver Characteristics & Timings (Full-speed mode only) SYMBOL tFR tFF FRFM VCRS tPLH(DRV) tPHL(DRV) tPHZ tPLZ tPZH tPZL CONDITIONS CL = 50 to 125pF, measured 10% to 90% (VOH-VOL); See Figure 6 CL = 50 to 125pF, measured 10% to 90% (VOH-VOL); See Figure 6 Excluding the first transition from idle state Excluding the first transition from idle state; See Figure 9 MIN 4 4 90 1.3 TYP MAX 20 20 110 2.0 25 25 25 25 18 18 UNITS ns ns % V ns ns ns ns ns ns
Driver propagation delay (VO/ LOW-to-HIGH transition; See Figure 9 VPO D+/D-, FSEO/VMO HIGH-to-LOW transition; See Figure 9 D+/DDriver disable delay (OE D+/D-) Driver enable delay (OE D+/D-) HIGH-to-OFF; See Figure 7 LOW-to-OFF; See Figure 7 OFF-to-HIGH; See Figure 7 OFF-to-LOW; See Figure 7
Note 3: Rev 2.0 states ZDRV must be between 28 and 44, when the driver is not high speed capable.
(c) 2003 California Micro Devices Corp. All rights reserved. 10/01/03
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CM2400-01
Specifications (cont'd)
ELECTRICAL OPERATING CHARACTERISTICS (CONT'D)
Receiver Timings (Full-speed mode only) SYMBOL tPLH(RCV) tPHL(RCV) tPLH(SE) tPHL(SE) PARAMETER Driver propagation delay (D+/D- RCV) CONDITIONS LOW-to-HIGH transition; See Figure 8 HIGH-to-LOW transition; See Figure 8 MIN TYP MAX 15 15 UNITS ns ns Differential Receiver
Single-ended Receiver Driver propagation delay (D+/D- VP, VM) LOW-to-HIGH transition; See Figure 8 HIGH-to-LOW transition; See Figure 8 15 15 ns ns
Test Loads
Test Point 33 15pF
Test Point
50pF
Load for VP,VM and RCV delay measurements
Load for D+ and D- delay measurements (Max and Min Timing)
Test Point 33 200 50pF V
V = VREG(3.3) for tPZL and tPLZ V = 0 v for tPZH and tPHZ
DUT
Load for ENABLE and DISABLE delay measurements.
(c) 2003 California Micro Devices Corp. All rights reserved.
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15k
10/01/03
DUT
DUT
CM2400-01
Performance Information
CM2400-01 Typical DC Characteristics (nominal conditions unless specified otherwise)
1.00
300
VBUS CURRENT [A]
VCC CURRENT [A]
0.50
250
0.00
200
-0.50
150
-1.00 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
VCC VOLTAGE [V]
100 4.1 4.3 4.5
VBUS VOLTAGE [V]
4.7
4.9
5.1
5.3
5.5
Figure 1. VCC Current in Idle Mode (SPND=LOW)
Figure 3. VBUS CURRENT in Idle Mode (SPND=LOW)
60.0
1.00
VBUS CURRENT [A]
50.0
VCC CURRENT [A]
55.0
0.50
0.00
45.0
-0.50
40.0 4.1 4.3 4.5
VBUS VOLTAGE [V]
-1.00
4.7 4.9 5.1 5.3 5.5
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
VCC VOLTAGE [V]
Figure 2. VBUS Current in Suspend Mode (SPND=HIGH)
Figure 4. VCC Current in Suspend Mode (SPND=HIGH)
(c) 2003 California Micro Devices Corp. All rights reserved. 10/01/03
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214
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7
CM2400-01
Performance Information (cont'd)
CM2400-01 Typical AC Characteristics (nominal conditions unless specified otherwise)
Figure 5. Rise and Fall Time Matching
(c) 2003 California Micro Devices Corp. All rights reserved.
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CM2400-01
Performance Information
CM2400 Timing Diagrams
3.3V
INPUT tFR, tLR VOH 90% 90% tFF, tLF
VCRS
VCRS
0V VOH
tPLH(RCV) tPLH(SE)
tPHL(RCV) tPHL(SE)
OUTPUT 10% VOL VOL 10%
0.9V
0.9V
Figure 6. Rise and Fall Timing
Figure 8. D+, D- to RCV, VP and VM Timing
1.65V 1.65V INPUT 0.9V 0.9V INPUT 0V tPZH tPZL tPHZ tPLZ
-0.3V
0.9V
0.9V
0V tPLH(DRV) VOH tPHL(DRV)
VOH
OUTPUT
VCRS OUTPUT VCRS VCRS
+0.3V
VOL
VOL
Figure 7. OE to D+, D- Timing
Figure 9. VO/VPO, FSEO/VMO to D+, D- Timing
(c) 2003 California Micro Devices Corp. All rights reserved. 10/01/03
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9
CM2400-01
Functional Description
The CM2400-01HB USB Transceiver supports 3 different power supply configurations, which can be configured dynamically. Table 1 details the various configurations. In Normal Mode the internal regulator produces 3.3V from VBUS to power the internal drivers and receivers associated with the USB protocol.
VBUS Connected Connected Not Connected VCC Connected Not Connected Connected CONFIGURATION Normal Mode Disable Mode Sharing Mode VBUS VREG VCC VPU D+, DVP, V M RCV USB_DET Inputs
sharing mode. In this mode, VP and VM are driven high while RCV and USB_DET are driven low. In Disable and Sharing Mode, all input/output pins follow the states defined in Table 2.
Sharing Mode State VBUS < 3.6V Pulled Down Present High-Z (off) High-Z H L L High-Z Disable Mode State 4.1V to 5.5V 3.3V Out Not Present High-Z (off) High-Z Invalid Invalid Invalid High-Z
PIN
Table 1: Power Supply Connections There are three power supply configurations for the CM2400-01HB: Normal mode, Disable mode and Sharing mode. These three modes can be changed dynamically. Normal mode occurs when the VCC and VBUS inputs are both connected to a source. VBUS is tied to a 5V source for 5V operation. The internal regulator of the CM2400-01HB provides 3.3V output on VREG. The VCC input is connected to an independent source that can range from 1.65V to 3.3V. When VCC is not connected and VBUS is connected, the device is in Disable mode. The D+ and D- pins are in tri-state and power consumption drops to a suspend state level. In Sharing mode, VCC is connected while VBUS is below 3.6V. The D+ and D- pins are in tri-state and the CM2400 allows external signals (<3.6V) to share these two lines. The CM2400-01HB is designed to draw almost zero current from the D+ and D- lines while in
Table 2: Pin States in Disable or Sharing Mode Table 3 lists the functions of the modes associated with suspend and OE pins. When Suspend is low and OE is high, signal levels on D+ and D- are determined by other USB devices and pull-up/down resistors. In Suspend Mode (SPND = HIGH) the differential receiver is inactive and output RCV is always LOW. Out of suspend signaling is detected via the single-ended receivers VP and VM. During suspend and while the output is still enabled (OE = LOW), D+ and D- lines are driven to their intended states.
SUSPEND L L H H
OE L H L H
D+ / DDriver & Receiver Active Receiving Driving High-Z
RCV Active Active Inactive RCV=L Inactive RCV=L
VP/V M Active Active Active Active
Function Normal driving mode. Differential receiver active Driver Tri-stated. Differential receiver active. Driving during 'suspend'. Differential receiver inactive. Low-power state.
Table 3: Function Selection.
(c) 2003 California Micro Devices Corp. All rights reserved.
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CM2400-01
Functional Description (cont'd)
Detailed in Table 4 and Table 5 are the operating modes selected when MODE is set to LOW and HIGH. When MODE = HIGH, the differential input data interface mode is selected. The two driver inputs function as VMO and VPO. When MODE = LOW, the singleended input data interface mode is selected. The two driver inputs function as FSE0 and VO. Detection of a VBUS voltage is accomplished via an internal Comparator with hysteresis. The output from this Comparator is fed via the level translator to ensure compatibility with processor core voltages and output to pin USB_DET. When VBUS is over 4.1V, USB_DET is HIGH. When VBUS is under 3.6V, USB_DET is LOW. The CM2400-01HB USB transceiver includes an enumeration pin (ENUM) which internally connects VPU to VREG when enabled. This allows a processor running at a core voltage different than 3.3V to switch the pullup resistor in and out without the need for external circuitry.
MODE L (single-ended)
VO L L H H
FSE0 L H L H
Result Logic `0' SE0 Logic `1' SE0
Table 4: Operating Mode (OE = L)
MODE H (differential)
VO L L H H
FSE0 L H L H
Result SE0 Logic `0' Logic `1' Undefined
Table 5: Operating Mode (OE = L) Table 6 details the receiving function when OE is HIGH (driver disabled). RCV denotes the signal level on the output RCV just before an SE0 state occurs. This level is stable during the SE0 period.
D+/DDifferential Logic '0' Differential Logic '1' SE0
RCV L H RCV*
VP L H L
VM H L L
Table 6: Receiving Function (SPND = L)
Note 1: Denotes RCV is stable in last state before SE0 condition.
(c) 2003 California Micro Devices Corp. All rights reserved. 10/01/03
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CM2400-01
Application Information
The CM2400-01 transceiver is targeted for full-speed (12Mbits/s) USB peripherals including handheld electronic devices such as PDAs and cell phones. It provides the interface between the core I/O signals (within a range of 1.65V and 3.6V) and the USB data lines (D+ and D-) operating at 3.3V. This section describes how the USB transceiver interfaces to the USB port and to the controller or ASIC on the other side. A small number of external components is needed that includes two 33 series resistors for termination, two capacitors for filtering, and a 1.5K pullup resistor on the D+ data line to configure full-speed (12Mbits/second) operation. This pull-up resistor is tied to the VPU pin which internally connects to VREG (3.3V) when ENUM is set High. An internal switch disconnects VPU from VREG (VPU floating or high impedance) when ENUM is set Low. CAMD offers the PACUSB-U2 filter, available in both the SC70 and SOT23 6-lead packages, that integrates all these components as well as the additional ESD protection rated to 15kV per the IEC61000-4-2 standard (exceeding level 4). Figure 10 shows a typical electrical schematic for a USB peripheral application. The driver output resistance for the full-speed driver, should be between 28 and 44 (refer to the USB Specification section 7.1.1.1). Since the CM2400-01 output impedance is about 6 it is recommended that , 33 series resistors be used.
Figure 10. Schematic for USB Peripheral Device * The MODE pin selects the differential receiver mode when High (CMOS level or VCC), and selects the single-ended receiver mode when Low (connected to GND). The CM2400-01 is used in bus-powered systems only, where the VBUS supply pin is connected to the +5V VBUS line from the USB connector. * The VCC supply pin is the supply for the I/O signal logic that provide the interface with the ASIC. The VCC supply must range between 1.65V min and 3.6V max.
*
(c) 2003 California Micro Devices Corp. All rights reserved.
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CM2400-01
Application Information (cont'd)
The CM2400-01HB includes an internal 3.3V LDO that powers the transceiver from the VBUS. A capacitor (1F typical) is required on the regulator output (VREG pin). This output can only be used to power a limited external load of a few milliamperes (mA). For USB-powered peripheral applications, the 5V VBUS line can be regulated down to 3.3V or a lower voltage as shown in Figure 10, using a CM3019 regulator. This regulator provides excellent line and load regulation as well as current limit and thermal overload protection. The USB specification recommends the use of a 1F to 10F capacitor to be connected to the 5V VBUS. Please contact factory at 800-325-4966 to request on the availability of evaluation boards.
(c) 2003 California Micro Devices Corp. All rights reserved. 10/01/03
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CM2400-01
Mechanical Details
The CM2400-01HB is available in a 16-pin HBCC package. HBCC16 Mechanical Specifications Dimensions for CM2400-01HB devices packaged in 16-pin HBCC packages are presented below.
13
Mechanical Package Diagrams
TOP VIEW
D
9
A A1
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 b1 b2 b3 D Dh E Eh e e1 e2 e3 e4 # per tube # per tape and reel Millimeters Min 0.05 0.25 0.30 0.30 2.90 1.45 2.90 1.75 Max 0.80 0.10 0.35 0.40 0.40 3.10 1.55 3.10 1.85 Min HBCC16 16 Inches Max 0.0315 0.0039 0.0138 0.0157 0.0157 0.1220 0.0610 0.1220 0.0728 0.0197 TYP. 0.0984 TYP. 0.0984 TYP. 0.0965 TYP. 0.0965 TYP. 120 pieces* 2500 pieces Controlling dimension: millimeters
* This is an approximate number which may vary.
Detail C
E
1
5
SIDE VIEW
BOTTOM VIEW
e1 Dh e
9 13
0.50 TYP. 2.50 TYP. 2.50 TYP. 2.45 TYP. 2.45 TYP
e4
1/2 e4
e
Eh e2
5 16 1/2 e3
Detail A
1
Detail B
e3
CONTACT (PIN) DIMENSIONS
CF#0.20x45
b1 b1
Detail A
b2 b2
Detail B
b3 b3
Detail C
Dimensions for HBCC16 Package
(c) 2003 California Micro Devices Corp. All rights reserved.
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10/01/03


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