Checkpoint Systems Inc. EVOLVES10 Manual De Usuario
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D)
47
Parallel Configuration
Note:
The parallel configuration is not compatible with the serial universal socket.
The parallel interface SocketModem uses a 22-pin interface to provide an on-board DAA with tip and ring
connections, audio circuit for call-progress monitoring, and parallel interface
connections, audio circuit for call-progress monitoring, and parallel interface
.
Parallel SocketModem Pinout
Parallel Pin Descriptions
Pin # Signal
Name
In Out
Type
Description
1
Tip I/O
Telephone Line Interface – TIP
2
Ring I/O
Telephone Line Interface – RING
24
–RESET I Modem Reset (CMOS input with pull-up). The active low –RESET input
resets the SocketModem logic and returns the AT command set to the original
factory default values or to "stored values" in NVRAM.
The modem is ready to accept commands within 6.5 seconds of power-on or
reset. Reset must be asserted for a minimum of 15ms.
factory default values or to "stored values" in NVRAM.
The modem is ready to accept commands within 6.5 seconds of power-on or
reset. Reset must be asserted for a minimum of 15ms.
25
A1
Host Bus Address Line 1
26
DGND GND
Digital Ground
27
D7 O
Host Bus Data Line 7
29
D2 O
Host Bus Data Line 2
30
INT O
Host Bus Interrupt Line (Active High, Resets on Low)
31
A0 I
Host Bus Address Line 0
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
3.3 V or 5 V 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.