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Chapter 2 – Mechanical Specifications
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 12
Pin # Signal Name I/O Description
32 –WT I
Host Bus Write. When low, allows host to write to SocketModem.
33 –RD I
Host Bus Read. When low, allows host to read from SocketModem.
34 A2 I
Host Bus Address Line 2
35 D4 O
Host Bus Data Line 4
36 D5 O
Host Bus Data Line 5
37 D0 O
Host Bus Data Line 0
38 D1 O
Host Bus Data Line 1
39 D3 O
Host Bus Data Line 3
40 –CS I
Host Bus Chip Select; active low
41 D6 O
Host Bus Data Line 6
61 VCC PWR
3.3V or 5V Supply (depends upon model).
63 AGND GND
Analog Ground. This is tied common with DGND on the SocketModem. To
minimize potential ground noise issues, connect audio circuit return to AGND.
64 SPKR O
Speaker, Call Monitor