95
Name
Abbre-
viation
I/O
Function
Chip select 5/row address
strobe 5
CS5
Output
Strobe signal indicating that area 5 is
selected.
DRAM row address strobe signal when
area 5 is DRAM interface space.
Chip select 6
CS6
Output
Strobe signal indicating that area 6 is
selected.
Chip select 7
CS7
Output
Strobe signal indicating that area 7 is
selected.
Upper column address
strobe
UCAS
Output
16-bit DRAM interface space upper column
address strobe signal.
8-bit DRAM interface space column
address strobe signal.
Lower column address strobe
LCAS
Output
16-bit DRAM interface space lower column
address strobe signal.
Output enable
OE
Output
DRAM interface space output enable signal.
Wait
WAIT
Input
Wait request signal when accessing
external space.
Bus request
BREQ
Input
Request signal for release of bus to
external device.
Bus request acknowledge
BACK
Output
Acknowledge signal indicating that bus has
been released.
Bus request output
BREQO
Output
External bus request signal used when
internal bus master accesses external
space when external bus is released.
Data transfer acknowledge 1
(DMAC)
DACK1
Output
Data transfer acknowledge signal for single
address transfer by DMAC channel 1.
Data transfer acknowledge 0
(DMAC)
DACK0
Output
Data transfer acknowledge signal for single
address transfer by DMAC channel 0.
Data transfer acknowledge 3
(EXDMAC)
EDACK3
Output
Data transfer acknowledge signal for single
address transfer by EXDMAC channel 3.
Data transfer acknowledge 2
(EXDMAC)
EDACK2
Output
Data transfer acknowledge signal for single
address transfer by EXDMAC channel 2.
Data transfer acknowledge 1
(EXDMAC)
EDACK1
Output
Data transfer acknowledge signal for single
address transfer by EXDMAC channel 1.
Data transfer acknowledge 0
(EXDMAC)
EDACK0
Output
Data transfer acknowledge signal for single
address transfer by EXDMAC channel 0.
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