Xycom XVME-400 Manual page 39

XVME-400/40l/490/491 Manual
October, 1989
Synchronous
3.7.2
This section describes the steps required to set up the SCCs for synchronous operation.
These steps apply to any channel and should be followed in the specified order.
1)
Issue the Channel Reset command (WR9:D7,6).
Set WR4 as follows: X.1 clock mode D7,D6=0,0; type of sync D5,D4; sync mode
2)
enabled D3,D2=0,0; parity odd/even/enable in D1,DO.
3)
Set WRI0 as required.
4) Set WR6 and WR7 to the sync character or SDLC address as required.
Set WR3 as follows:
5)
D5,D4,D3,D2,D 1 as required; receiver disabled DO=O.
Set WR5 as follows: state of DTR and CTS in D7,Dl; number of transmit
6)
bits/character in D6,D5; D4,D2,D0
Set WR14 as required.
7)
Set interrupt or polled operation (refer to Section 3.3).
8)
9) Set clocking options (refer to Section 3.4).
10) Enable receiver (WR3:DO)
Operation Initialization
number of receive bits/character in D7,D6;
and transmitter (WR5:D3)
as required; and transmitter disabled D3=0.
3-11
as required.