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Synchronous Serial Interface
—
PC/Xi
63
The table below shows the pin assignments for the PC/8i+ RJ-45 jack. Dual
function pins also show the jumper settings required for each function. Signals
ending with “A” connect to the “A” port of the 8530 communications controller,
and signals ending with “B” connect to the “B” port of the 8530.
Table 15
PC/8i+ Synchronous Port Pin Assignments (RJ-45)
RJ-45 Pin
Signal
Name
Jumpers
1
TRxCA
Transmit/Receive Clock
J4 Pins 1 & 2
SYNB
Synchronization B (RI)
J4 Pins 2 & 3
2
DSRA
Data Set Ready A (Input)
J1 Pins 2 & 3; J2 Pins 2 & 3
SYNA
Synchronization A (Output)
J1 Pins 1 & 2; J2 Pins 1 & 2
3
RTSA
Request To Send A
4
GND
Chassis Ground
5
TxDA
Transmitted Data A
6
RxDA
Received Data A
7
SG
Signal Ground
8
CTSA
Clear To Send A
9
DTRB
Data Terminal Ready B
10
RTxCA
Receive/Transmit Clocks A
J3 Pins 2 & 3
DCDA
Data Carrier Detect A
J3 Pins 1 & 2
NOTE—Contact your DigiBoard sales representative for information regarding
software support for the PC/Xi+ synchronous port.