z85230 ZiLOG Semiconductor, z85230 Datasheet - Page 116

• Manufacturer Part Number: z85230
• Description: Enhanced Serial Communications Controller
• Manufacturer: ZiLOG Semiconductor

receive conditions
request on receive
request on transmit
request on transmit mode
reset highest IUS command
reset Tx CRC generator command
reset Tx/underrun EOM latch
RR
RR0 latch
RTS problem
S
SDLC
SDLC FIFO overflow problem
SDLC mode
software interrupt acknowledge
standard test conditions
synchronization
synchronous modes
system timing characteristics table, Z85230
T
timing, Z85230
transmit buffer empty interrupt
transmit clock counter
Tx underrun/EOM interrupt
TxD forced high in SDLC mode
PS005303-0907
10
description 100
solutions 101
CRC polynomial 17
FIFO frame status enhancement 28
loop mode 18
mode, CRC reception 26
mode, TxD forced high 26
status FIFO 19
status FIFO anti-lock feature 31
transmit data interrupt response 28
description 102
solutions 102
external 4
internal 4
27
17
72
14
22
22
16
5
75
24
28
28
28
22
28
26
28
97
TxD forced high problem
TxIP latch
V
vector includes status (VIS)
VIS
W
WR
WR7’
write cycle timing
write register (WR)
write register 7 prime (WR&’)
write register 7 prime (WR7’)
write registers
description 101
solutions 102
Z80230 70
Z85230 73
bit 0 25
bit 1 25
bit 2 25
bit 3 25
bit 4 24
bit 5 24
bit 6 24
bit 7 24
28
10
9, 23
26
32
10
Product Specification
28
9
23
Index
111