80186/80188
IN:
L:
O:
Input (DRQ0, TIM0, . . . )
Logic Level Low or ALE
Output
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has from 5 to 7 characters. The
first character is always a ‘‘T’’ (stands for time). The
other characters, depending on their positions,
stand for the name of a signal or the logical status of
that signal. The following is a list of all the charac-
ters and what they stand for.
QS: Queue Status (QS1, QS2)
R:
S:
RD signal, RESET signal
Status (S0, S1, S2)
SRY: Synchronous Ready Input
V:
W:
X:
Z:
Valid
WR Signal
No Longer a Valid Logic Level
Float
A:
ARY: Asynchronous Ready Input
C: Clock Output
Address
CK: Clock Input
CS: Chip Select
Examples:
T
T
T
Ð Time from Clock low to Address valid
Ð Time from Clock high to ALE high
Ð Time from Clock low to Chip Select valid
CT: Control (DT/R, DEN, . . . )
Data Input
CLAV
D:
DE: DEN
CHLH
CLCSV
H:
Logic Level High
18
18
INTEL [ INTEL ]
