Zilog Z16C30 User Manual
Page 145

7-17
Z16C30 USC
®
U
SER
'
S
M
ANUAL
Z
ILOG
UM97USC0100
Start: Interrupt with
Vector = "Rx Data"
CT=0?
Clear the RD IP bit
(write 90
16
to DCCR7-0)
Yes
Read Status
from RCSR.
Handle bits other
than RxBound
as required.
No
CT=0?
IF NECESSARY,
write 0101 to
RCmd (RCSR15-12)
Read FIFO count
CT: = RICR15-8
Read FIFO count
CT: = RICR15-8
No
Yes
Clear the RD IUS bit
(write 90
16
to DCCR15-8)
Return from
Interrupt
Read & store byte
or word from RDR.
Decrement CT by
1 or 2 accordingly
Read & store last
byte/word from RDR.
Decrement CT by
1 or 2 accordingly
End of Frame?
RxBound
(RCSR4) = 1
?
Yes
Read RCSR15-8
or RCSR15-0, to
clear latched status
Perform End of
Frame processing
(switch buffers etc.)
No
Figure 7-11. A Sample Service Routine for Receive Data Interrupts
UM009402-0201
See also other documents in the category Zilog Sensors:
- S3F94C8 (11 pages)
- S3F80QB (29 pages)
- S3F8S19 (38 pages)
- Z51F6412 (55 pages)
- Z51F6412 (96 pages)
- Z51F6412 (54 pages)
- EZ80F93 (11 pages)
- Z16F6411 (20 pages)
- Z16F6411 (216 pages)
- EZ80F93 (13 pages)
- ZMOT0BSB (314 pages)
- ZMOT0BSB (582 pages)
- Z8F083A (14 pages)
- Z8F2480 (17 pages)
- Z8F082A (18 pages)
- Z8F082A (15 pages)
- Z8F0822 (17 pages)
- Z8F6423 (83 pages)
- Z8F2480 (19 pages)
- Z8F2480 (18 pages)
- Z8F6423 (18 pages)
- Z8F6423 (27 pages)
- Z8F6482 (50 pages)
- EZ80F91GA (469 pages)
- EZ80F915 (411 pages)
- EZ80F91NAA (34 pages)
- EZ80F91 (41 pages)
- EZ80L92 (40 pages)
- EZ80L92 (26 pages)
- EZ80L92 (79 pages)
- EZ80L92 (10 pages)
- eZ80F92 (87 pages)
- ZUSBOPTS (59 pages)
- Z16FMC6 (520 pages)
- Z8FMC16 (26 pages)
- Z16FMC6 (41 pages)
- ZUSBOPTS (38 pages)
- Z16FMC6 (8 pages)
- Z16FMC6 (26 pages)
- ZMOT1AHH (25 pages)
- ZMOT0BSB (34 pages)
- EZ80F915 (78 pages)
- EZ80190 (87 pages)
- EZ80L92 (86 pages)
- EZ80F91GA (127 pages)