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PDF CM2400-01 Data sheet ( Hoja de datos )
| Número de pieza | CM2400-01 | |
| Descripción | Universal Serial Bus Transceiver | |
| Fabricantes | CMD | |
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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
Applications
• Wireless handsets
• Digital still cameras
• PDAs (Personal Digital Assistants)
• IAs (Information Appliances)
Product Description
The CM2400-01HB Universal Serial Bus (USB) trans-
ceiver 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.
Simplified Block Schematic
VCC
USB_DET
ENUM
OE
VMO/FSEO
VPO/VO
MODE
RCV
SPND
VP
Voltage
Detector
ENABLE
Voltage
Regulator
VBUS
VREG
VPU
D+
D-
VM GND
© 2003 California Micro Devices Corp. All rights reserved.
10/01/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846 L www.calmicro.com
1
1 page  
CM2400-01
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS (CONT’D)
Analog I/O Pins (VBUS = 4.1V to 5.5V; VCC = 1.65V to 3.6V)
SYMBOL PARAMETER
CONDITIONS
MIN TYP
VDI Differential receiver input
sensitivity
| VI(D+) - VI(D-) |
0.2
VCM Differential receiver
common mode voltage
0.8
VIL Single-ended receiver
logic LOW input voltage
VIH Single-ended receiver
logic HIGH input voltage
2.0
VHYS
Single-ended receiver
Hysteresis voltage
0.4
VOL
VOH
ILZ
CIN
RSW
ZDRV
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% resis-
tor)
RL = 1.5KΩ tied to +3.6V
RL = 15KΩ tied to GND
Pin to GND
Measured with steady-state drive; See Note 3
2.8
33
10
30
39
Driver Characteristics & Timings (Full-speed mode only)
SYMBOL PARAMETER
CONDITIONS
MIN TYP
tFR Rise time
tFF Fall time
FRFM
VCRS
Differential rise / fall time
matching (tFR/tFF)
Output signal crossover
voltage
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
4
4
90
1.3
tPLH(DRV)
tPHL(DRV)
Driver propagation delay (VO/ LOW-to-HIGH transition; See Figure 9
VPO ➔ D+/D-, FSEO/VMO ➔ HIGH-to-LOW transition; See Figure 9
D+/D-
tPHZ
tPLZ
tPZH
tPZL
Driver 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 28Ω and 44Ω, when the driver is not high speed capable.
MAX
2.5
0.8
0.7
0.3
3.6
+1
44
MAX
20
20
110
2.0
25
25
25
25
18
18
UNITS
V
V
V
V
V
V
V
µA
pF
Ω
Ω
UNITS
ns
ns
%
V
ns
ns
ns
ns
ns
ns
© 2003 California Micro Devices Corp. All rights reserved.
10/01/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846 L www.calmicro.com
5
5 Page 
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 inter-
face mode is selected. The two driver inputs function
as VMO and VPO. When MODE = LOW, the single-
ended input data interface mode is selected. The two
driver inputs function as FSE0 and VO.
MODE
L
(single-ended)
VO
L
L
H
FSE0
L
H
L
Result
Logic ‘0’
SE0
Logic ‘1’
HH
SE0
Table 4: Operating Mode (OE = L)
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 enu-
meration 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 pull-
up resistor in and out without the need for external cir-
cuitry.
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+/D-
Differential 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.
© 2003 California Micro Devices Corp. All rights reserved.
10/01/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846 L www.calmicro.com
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet CM2400-01.PDF ] | |
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