Intel 80C196NU ユーザーズマニュアル
13-19
INTERFACING WITH EXTERNAL MEMORY
Figure 13-8. Multiplexing and Bus Width Options
Bus Control
Address Bits 16–19
Address Bits 0–15
16-bit Data
A19:16
(EPORT)
A15:0
AD15:0
8XC196
Device
Bus Control
Address Bits 16–19
Address Bits 0–15
A19:16
(EPORT)
A15:0
AD7:0
8XC196
Device
8-bit Data
Driven with the data currently
on the internal bus.
on the internal bus.
AD15:8
8-bit Demultiplexed Bus
16-bit Demultiplexed Bus
Bus Control
Address Bits 16–19
Address Bits 0–15
16-bit Multiplexed
Address/Data
Address/Data
A19:16
(EPORT)
A15:0
AD15:0
8XC196
Device
Bus Control
Address Bits 16–19
Address Bits 0–15
A19:16
(EPORT)
A15:0
AD7:0
8XC196
Device
8-bit Multiplexed
Address/Data
Address/Data
Address Bits 8–15
AD15:8
8-bit Multiplexed Bus
16-bit Multiplexed Bus
A2364-03