CMX624 CML Microcircuits, CMX624 Datasheet - Page 4

• Manufacturer Part Number: CMX624
• Description: V.23-Bell 202 Modem
• Manufacturer: CML Microcircuits

V23 / Bell 202 Modem
1.3
2001 Consumer Microcircuits Limited
D2/D5/P4
CMX624
Pin No.
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
Signal List
XTAL/CLOCK
REPLY DATA
COMMAND
RLYDRV
SERIAL
CLOCK
XTALN
TXON
Name
DATA
IRQN
V
CSN
TOP
TXO
TXN
RXP
V
BIAS
SS
Signal
Power
Type
O/P
O/P
O/P
O/P
O/P
O/P
O/P
T/S
I/P
I/P
I/P
I/P
I/P
I/P
The output of the on-chip Xtal oscillator inverter.
The input to the oscillator inverter from the Xtal
circuit or external clock source.
The ‘C-BUS’ serial clock input from the C. See
Section 1.5.11
The ‘C-BUS’ serial data input from the C.
A 3-state ‘C-BUS’ serial data output to the C.
This output is high impedance when not sending
data to the C.
The ‘C-BUS’ transfer control input provided by
the C.
A ‘wire-ORable’ output for connection to a C
Interrupt Request input. This output is pulled
down to V ss when active and is high impedance
when inactive. An external pullup resistor is
required.
The Tx analogue signal output.
The output of the line driving amplifier.
The inverting input to the line driver amplifier.
The inverted output of the line driving amplifier.
The negative supply rail (ground).
Internally generated bias voltage of V
except when the device is in ‘Zero Power’ mode
when V
decoupled to V
to the device pins.
Relay drive open drain output. This output is
pulled down to V
impedance when inactive.
The non-inverting input to the Rx input amplifier.
BIAS
4
will discharge to V
SS
SS
Description
by a capacitor mounted close
when active and is high
SS
. Should be
DD
/2,
CMX624
D/624/6