Z16C3516VSG Zilog, Z16C3516VSG Datasheet - Page 149

• Manufacturer Part Number: Z16C3516VSG
• Description: IC 16MHZ Z8500 CMOS ISCC 68-PLCC
• Manufacturer: Zilog
• Series: IUSC™r

Specifications of Z16C3516VSG

• Controller Type: Serial Communications Controller (SCC)
• Interface: USB
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 50mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 68-LCC (J-Lead)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4690-5; Z16C3516VSG

UM011001-0601
loop:
chkloop:
bad_data:
good:
enddma:
;
fill_mem:
fill_loop:
fill_00:
fill_00l:
ld
l
Table 14. Test Program – Z180/SCC DMA Transfer (Continued)
call
ld
ld
out
ld
out0
ld
out
ld
out
ei
bit
jr
push
ld
ld
ld
a,(de)
cpi
jr
jp
inc
jr
pop
set
jr
pop
jr
d
ld
ld
ld
ldi
jp
dec
inc
jr
ld
ld
ld
ldi
ret
dec
jr
initdma
b,0
a,00h
(scc_data),a
a,11001100b
(dstat),a
a,05h
(scc_cont),a
a,01101000b
(scc_cont),a
1,b
z,loop
bc
bc,length
de,tx_buff
hl,rx_buff
nz,bad_data
v,good
de
chkloop
bc
2,b
enddma
bc
$
hl,temp
bc,length
de,tx_buff
(hl),00h
nv,fill_00
hl
(hl)
fill_loop
bc,length
de,rx_buff
(hl),00h
nv
hl
fill_00l
The Z180™ Interfaced with the SCC at MHZ
;init status
;load 1st data to be sent
;enable dmac and int from DMA0
;select WR5
;start tx
;wait here for completion
;rx dma end?
;not, then loop again
;save bc reg
;compare tx data with rx data
;restore bc
;set error flag
;restore bc
;tx/rx completed
you can put breakpoint here
; prepare data to be sent
; set length
; clear rx buffer area to zero
Application Note
7-29
7