Preliminary Information
Pin Description (Continued)
Pin #
22
23
24
25
26
27
28
29
30
31
32
33
34
35.38
39
40
Name
NC
Z1
Z2
TX
RX
GTX0
GTX1
GRX0
GRX1
NC
NC
NC
SHK
IC
VEE
VDD
No Connection.
Reserved.
Line impedance Node 1.
Normally connects to Z2. See Fig. 3.
Line impedance Node 2.
Normally connects to Z1. See Fig 3.
Transmit (Output)
.
4-wire (AGND) referenced audio output.
Receive (Input).
4-wire (AGND) referenced audio input.
Transmit Gain Node 0.
Connects to GTX1 for 0dB transmit gain.
Description
MH88620BR
Transmit Gain Node 1.
Connects to a resistor to AGND for transmit gain adjustment.
Receive Gain Node 0.
Connects to GRX1 for 0dB gain.
Receive Gain Node 1.
Connect to a resistor to AGND for receive gain adjustment.
No Connection.
Reserved.
No Connection.
Reserved.
No Connection.
Reserved.
Off-Hook Indication (Output).
A logic low output indicates when the subscriber
equipment has gone Off-Hook.
Internal Connection.
Negative Supply Voltage.
-5V dc.
Positive Supply voltage.
+5V dc
2-147
MITEL [ MITEL NETWORKS CORPORATION ]
