Objective Data Sheet Rev1.1
CALIFORNIA MICRO DEVICES
CM2400-05
Universal Serial Bus Transceiver with Level Translator
Features
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Complies with USB Specification Rev 1.1 & 2.0.
Supports Full (12Mbit/s) speed.
Integrated 5V to 3.3V regulator.
Used as a USB device transceiver.
Bi-directional driver input/output pins.
Two single-ended receivers with hysteresis.
USB Detection of VBUS via level translator.
Stable RCV output during SE0 condition.
Low power operation.
Supports 1.65 to 3.3V I/O voltage levels.
Full industrial operating range –40 to 85
°C.
Available in small HBCC16 and QFN16 Package.
Functional Diagram
Applications
Mobile Phones.
Digital still cameras.
PDA (Personal Digital Assistant).
IA (Information Appliance).
Product Description
The CM2400-05 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).
An internal level shifter allows interface to Application
specific IC’s (ASIC’s) and Programmable logic
devices (PLD’s) running at core voltages of 1.65 to
3.3V.
An internal 5-3.3V regulator is used to power the
CM2400-05 USB transceiver via the USB supply
V
BUS
.
VM/VMO and VP/VPO are bi-directional pins. In one
mode they function as the differential driver input
data. In another mode they function as the output of
the single ended receivers. This mode is configured
by the OE# pin.
This device is ideal for portable electronic devices
such as mobile phones, digital still cameras, PDA
(Personal Digital Assistants) and IR (Information
Appliances).
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* Pins are bi-directional based on OE# state.
If OE# = Vcc then VM/VMO and VP/VPO is configured
output.
If OE# = GND then VM/VMO and VP/VPO is configured
input.
STANDARD PART ORDERING INFORMATION
Package
Pads
16
16
Style
QFN16
HBCC16
Tape & Reel
Ordering Information
Part Marking
03/01/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
1
Objective Data Sheet Rev1.1
CALIFORNIA MICRO DEVICES
CM2400-05
Pin Functions
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Symbol
OE#
RCV
VP/VPO
VM/VMO
SPND
N.C.
V
CC
USB_DET
D-
D+
N.C.
N.C.
V
REG
V
BUS
V
PU
ENUM
GND
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.
Bi-directional input output of D+. Configured by OE#
Bi-directional input output of D-. Configured by OE#
Suspend input. Allows the device to enter a low power state while the USB is inactive.
No Internal connection to circuitry
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. Full speed connect mode, connect V
PU
via a 1.5kΩ resistor.
Tolerance of this resistor is defined in the USB specification REV 1.1 & 2.0
No Internal connection to circuitry
No Internal connection to circuitry
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.
Enumerate, allows software to control connection of the external pull-up via the level translator. If
ENUM = LOW then V
PU
is floating. If ENUM = HIGH then V
PU
is internally connected to V
REG
.
The ground terminal is connected to the exposed diepad (heatsink).
© 2000 California Micro Devices Corp. All rights reserved
03/01/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
2
Objective Data Sheet Rev1.1
CALIFORNIA MICRO DEVICES
Functional Description:
The CM2400-05 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 V
BUS
to power the internal drivers and receivers
associated with the USB protocol.
In
Disable
and
Sharing Mode,
all input/output pins
follow the states defined in
Table 2.
In
Sharing mode
D+, D- and VPU can have voltages higher then Vcc.
This allows other external signals to share D+ and D-
while USB signaling is disabled.
driving during suspend is used to signal remote wake-up
by driving a ‘K’ signal for a period of 1 to 15ms.
Detailed in Table 4 is the differential result for all
variations on VP/VPO and VM/VMO.
Table 5 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.
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 4.1 volts USB_DET
is HIGH. When VBUS is under 3.6 volts USB_DET is
LOW.
CM2400-05
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. This is permitted because
© 2000 California Micro Devices Corp. All rights reserved
03/01/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
3
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