Registers For External Memory Access (External Bus Pin Control Circuit) - Fujitsu F2MC-16LX Hardware Manual

6.2.1 Registers for External Memory Access (External Bus Pin
Control Circuit)
External memory access (external bus pin control circuit) has the following three types
of registers:
• Automatic ready function selection register
• External address output control register
• Bus control signal selection register

■ Registers for External Memory Access (External Bus Pin Control Circuit)

Figure 6.2-2 Registers for External Memory Access (External Bus Pin Control Circuit)
Automatic ready function
selection register
Address:0000A5
Read/write
Initial valu
External address
output control register
Address:0000A6
Read/write
Initial valu
Bus control signal
selection register
Address:0000A7
Read/write
Initial valu
6.2 External Memory Access (External Bus Pin Control Circuit)
15 14
bit
IOR1 IOR0 HMR1 HMR0
H
(W) (W)
(0) (0)
7 6
bit
E23 E22
H
(W) (W)
(0) (0)
15 14
bit
CKE RYE
H
(W) (W)
(0) (0)
13 12 11 10
(W) (W) (-) (-)
(1) (1) (-) (-)
5 4 2
3
E21 E20 E19 E18
(W) (W) (W) (W)
(0) (0) (0) (0)
13 12 11 10
HDE IOBS HMBS WRE
(W) (W) (W) (W)
(0) (0) (0) (0)
9
8
LMR1 LMR0 ARSR
(W) (W)
(0) (0)
1 0
E17 E16 HACR
(W) (W)
(0) (0)
9
8
LMBS ECSR
(W) (-)
(0) (-)
121