pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 73

• Manufacturer Part Number: pc87591l
• Description: Lpc Mobile Embedded Controllers
• Manufacturer: National Semiconductor Corporation

Revision 1.07
4.0 Embedded Controller Modules
Data placed
on D0-15,
SELn: active
WAIT field in SZCFGn reg.
HOLD field in SZCFGn reg.
TIW
Note: References to SZCFGn also apply to the IOCFG register.
References to SELn also apply to the SELIO signal.
Internal waits completed
Hold cycles completed
Internal waits corresponding to Wait field in SZCFGn register.
T
hold
0
0
Figure 12. Early Write Bus Cycle
Hold cycles according to HOLD field
in SZCFGn reg.
(Continued)
begin
T2
T2
T3
T1
end
T1
73
Data placed on D0-15,
SELn: active
SELn: inactive, WR0-1: inactive;
if HOLD field in SZCFGn reg. = 0 data put in TRI-STATE.
Address placed on A0-19,
WR0-1: activated
Address on A0-19 invalid/changed
Data put in TRI-STATE
HOLD in SZCFGn reg. = 0
WAIT field in SZCFGn reg. = 0
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