Xycom XVME-400, Руководство пользователя

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XVME-400/40l/490/491 Manual
October, 1989
3.7.2
Synchronous Operation Initialization
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).
2)
Set WR4 as follows: X.1 clock mode D7,D6=0,0; type of sync D5,D4; sync mode
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.
5)
Set WR3 as follows: n u m b e r o f r e c e i v e b i t s / c h a r a c t e r i n D7,D6;
D5,D4,D3,D2,D 1 as required; receiver disabled DO=O.
6) Set WR5 as follows: state of DTR and CTS in D7,Dl; number of transmit
bits/character in D6,D5; D4,D2,D0
as required; and transmitter disabled D3=0.
7)
Set WR14 as required.
8)
Set interrupt or polled operation (refer to Section 3.3).
9) Set clocking options (refer to Section 3.4).
10) Enable receiver (WR3:DO) and transmitter (WR5:D3) as required.
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