J151 SC88PIO
There are three connectors on the board. Pin 1 of each connector is marked, and they are shown here as they appear on the board.
(1) 1 Switch (2) 2 gnd
channel A data out | 1 | o | o | 2 | channel A data in |
channel A RTS out | 3 | o | o | 4 | channelA CTS in |
gnd | 5 | o | o | 6 | n/c |
channel B CTS in | 7 | o | o | 8 | channel B RTS out |
channel B data in | 9 | o | o | 10 | channel B data out |
+5V | 50 | 49 | +5V | ||
+12V | 48 | 47 | -12V | ||
Group 4 inputs |
CT1 in | 46 | 45 | CT0 in | |
SYNCB in | 44 | 43 | RxDB in | ||
RTxCB | 42 | 41 | GND | ||
Group 3 outputs |
CT1 out | 40 | 39 | CT0 out | |
38 | 37 | ||||
36 | 35 | ||||
RTSB | 34 | 33 | TxDB | ||
32 | 31 | GND | |||
Group 2 I/O |
Bit 7 | 30 | 29 | Bit 6 | |
Bit 5 | 28 | 27 | Bit 4 | ||
Bit 3 | 26 | 25 | Bit 2 | ||
Bit 1 | 24 | 23 | Bit 0 | ||
22 | 21 | GND | |||
Group 1 Inputs |
Bit 7 | 20 | 19 | Bit 6 | |
Bit 5 | 18 | 17 | Bit 4 | ||
Bit 3 | 16 | 15 | Bit 2 | ||
Bit 1 | 14 | 13 | Bit 0 | ||
Latch control | 12 | 11 | GND | ||
Group 0 Outputs |
Bit 7 | 10 | 9 | Bit 6 | |
Bit 5 | 8 | 7 | Bit 4 | ||
Bit 3 | 6 | 5 | Bit 2 | ||
Bit 1 | 4 | 3 | Bit 0 | ||
GND | 2 | 1 | GND |
Notes: