Z85233 Datasheet, PDF (190/317 Pages) Zilog, Inc. – The Zilog SCC Serial Communication Controller

UM010901-0601
Application Note
The Z180™ Interfaced with the SCC at MHZ
Table 14. Test Program – Z180/SCC DMA Transfer (Continued)
db
01h
;select WR1
db
01100000b
;REQ on Rx
7
db
02h
db
00h
;select WR2
;00h as vector base
db
03h
db
11000000b
;select WR3
;Rx 8bit/char
db
05h
db
01100000b
;select WR5
;tx 8bit/char
db
06h
db
00h
;select WR6
;
db
07h
db
00h
;select WR7
;
db
09h
db
00000001b
;select WR9
;stat low, vis
db
0ah
db
00000000b
db
0bh
db
01010110b
;
0
;
1010
;
110
;select WR10
;set as default
;select WR11
;
No xtal
TxC,RxC from BRG
TRxC = BRG output
db
0ch
db
00h
;select WR12
;BR TC Low
db
0dh
db
00h
;select WR12
;BR TC high
db
0eh
db
00010110b
;
000
;
1
;
0
;
1
;
1
;
0
;select WR14
;
nothing about DPLL
Local loopback
No local echo
DTR/REQ is req
BRG source = PCLK
Not enabling BRG yet
db
0eh
db
00010111b
;
000
;
1
;
0
;
1
;
1
;
1
;select WR14
;
nothing about DPLL
Local loopback
No local echo
DTR/REQ is REQ
BRG source = PCLK
Enable BRG
db
03h
db
11000001b
;select WR3
;rx enable
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