TMP91C824
91C824-237
(4) Chip Select/Wait Control (1/2)
Symbol
Name
Address
7
6
5
4
3
2
1
0
B0E
B00M1
B00M0
B0BUS
B0W2
B0W1
B0W0
W
W
W
W
W
W
W
0
0
0
0
0
0
0
B0CS
Block 0
CS/WAIT
control
Register
C0H
(Prohibit
RMW)
0: DIS
1: EN
00: ROM/SRAM
01:
10:
Reserved
11:
Data bus
width
0: 16 bit
1: 8 bit
000: 2WAIT
100: Reserved
001: 1WAIT 101: 3WAIT
010: 1
+
NWAIT 110: 4WAIT
011: 0WAIT 111: 8WAIT
B1E
B10M1
B10M0
B1BUS
B1W2
B1W1
B1W0
W
W
W
W
W
W
W
0
0
0
0
0
0
0
B1CS
Block 1
CS/WAIT
control
Register
C1H
(Prohibit
RMW)
0: DIS
1: EN
00: ROM/SRAM
01:
10:
Reserved
11:
Data bus
width
0: 16 bit
1: 8 bit
000: 2WAIT
100: Reserved
001: 1WAIT 101: 3WAIT
010: 1
+
NWAIT 110: 4WAIT
011: 0WAIT 111: 8WAIT
B2E
B2M
B20M1
B20M0
B2BUS
B2W2
B2W1
B2W0
W
W
W
W
W
W
W
W
1
0
0
0
0
0
0
0
B2CS
Block 2
CS/WAIT
control
Register
C2H
(Prohibit
RMW)
0: DIS
1: EN
0: 16 M
Area
1: Area
set
00: ROM/SRAM
01:
10:
Reserved
11:
Data bus
width
0: 16 bit
1: 8 bit
000: 2WAIT
100: Reserved
001: 1WAIT 101: 3WAIT
010: 1
+
NWAIT 110: 4WAIT
011: 0WAIT 111: 8WAIT
B3E
B30M1
B30M0
B3BUS
B3W2
B3W1
B3W0
W
W
W
W
W
W
W
0
0
0
0
0
0
0
B3CS
Block 3
CS/WAIT
control
Register
C3H
(Prohibit
RMW)
0: DIS
1: EN
00: ROM/SRAM
01:
10:
Reserved
11:
Data bus
width
0: 16 bit
1: 8 bit
000: 2WAIT
100: Reserved
001: 1WAIT 101: 3WAIT
010: 1
+
NWAIT 110: 4WAIT
011: 0WAIT 111: 8WAIT
BEXBUS
BEXW2
BEXW1
BEXW0
W
W
W
W
0
0
0
0
BEXCS External
CS/WAIT
control
Register
C7H
(Prohibit
RMW)
Data bus
width
0: 16 bit
1: 8 bit
000: 2WAIT
100: Reserved
001: 1WAIT 101: 3WAIT
010: 1
+
NWAIT 110: 4WAIT
011: 0WAIT 111: 8WAIT
S23
S22
S21
S20
S19
S18
S17
S16
R/W
1
1
1
1
1
1
1
1
MSAR0
Memory
Start
Address
Reg0
C8H
Start address A23 to A16
V20
V19
V18
V17
V16
V15
V14~9
V8
R/W
1
1
1
1
1
1
1
1
MAMR0
Memory
Address
Mask Reg0
C9H
CS0 area size 0: enable to address comparison
S23
S22
S21
S20
S19
S18
S17
S16
R/W
1
1
1
1
1
1
1
1
MSAR1
Memory
Start
Address
Reg1
CAH
Start address A23 to A16
V21
V20
V19
V18
V17
V16
V15~9
V8
R/W
1
1
1
1
1
1
1
MAMR1
Memory
Address
Mask Reg1
CBH
CS0 area size 0: enable to address comparison