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BUS INTERFACE UNIT
Figure 6-13. 16-bit Cycles to 8-bit Devices (Using BS8#)
State
A25:1
M/IO#
D/C#
W/R#
BHE#
ADS#
NA#
D15:8
RD#
WR#
BS8#
READY#
LOCK#
Low Byte
Write
[Late Ready]
High Byte
Write
[Late Ready]
Low Byte
Read
High Byte
Read
T1 T2 T1 T2 T1 T2 T1 T2 Ti
Idle
Cycles
Ti
BLE#
D7:0
Must be high
CLK2
CLKOUT
A3375-01
Data Out High
Data Out
Low
Data Out
High
Data
In
High
Data
In
Low
Valid 1
Valid 2
Valid 1
Valid 2