Sundance SMT300Q v.1.6 - Manual (Page 55)

Page 55 of 61 SMT300Q SMT300Q User Guide V1.65
Pin Twisted
Pair
RTI
Signal
RTO
Signal
Pin Twisted
Pair
RTI Signal RTO Signal
1 1 I/O_OUT I/O_IN 15 8 D2 D2
2 1 GND GND 16 8 D3 D3
3 2 I/O_IN I/O_OUT 17 9 D4 D4
4 2 GND GND 18 9 D5 D5
5 3 /CSTRB /CSTRB 19 10 D6 D6
6 3 GND GND 20 10 D7 D7
7 4 /CRDY /CRDY 21 11 VCC VCC
8 4 GND GND 22 11 GND GND
9 5 /CREQ /CREQ 23 12 /RST_OUT /RST_IN
10 5 GND GND 24 12 GND GND
11 6 /CACK /CACK 25 13 /RST_IN /RST_OUT
12 6 GND GND 26 13 GND GND
13 7 D0 D0 SHELL - SHIELD SHIELD
14 7 D1 D1
Table 33 : Buffered ComPort connector pin out
The overall shield is attached to the body of the metal plug shell.
The signal VCC is fused on the board at 1 amp; it automatically resets when the load
is removed.
When the buffered ComPort is reset to input, pins 1 and 23 are always driven and
pins 3 and 25 are always receivers. When the buffered ComPort is reset to output,
pins 3 and 25 are always driven and pins 1 and 23 are always receivers.