SH7604 Datasheet, PDF (624/633 Pages) Hitachi Semiconductor – Hardware Manual

BSC
Bus control register 2 (BCR2)
H'FFFFFFE4
16/32
Bit
Item
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit Name
A3 A3 A2 A2 A1 A1
— — — — — — — — SZ1 SZ0 SZ1 SZ0 SZ1 SZ0 — —
Initial Value 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0
R/W
R R R R R R R R R/W R/W R/W R/W R/W R/W R R
Bit
Bit Name
7, 6 Bus size specification
for area 3 (A3SZ1–
A3SZ0)(Valid only
when setting ordinary
space)
5, 4 Bus size specification
for area 2 (A2SZ1–
A2SZ0) (Valid only
when setting ordinary
space)
3, 2 Bus size specification
for area 1 (A1SZ1–
A1SZ0)
Value
Description
0 0 Reserved (setting prohibited)
0 1 Byte (8-bit) size
1 0 Word (16-bit) size
1 1 Longword (32-bit) size (Initial value)
0 0 Reserved (setting prohibited)
0 1 Byte (8-bit) size
1 0 Word (16-bit) size
1 1 Longword (32-bit) size (Initial value)
0 0 Reserved (setting prohibited)
0 1 Byte (8-bit) size
1 0 Word (16-bit) size
1 1 Longword (32-bit) size (Initial value)
Wait control register (WCR)
H'FFFFFFE8
16/32
Bit
Item
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit Name IW31 IW30 IW21 IW20 IW11 IW10 IW01 IW00 W31 W30 W21 W20 W11 W10 W01 W00
Initial Value 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Bit
Bit Name
15 to 8 Idles between cycles
for areas 3 to 0
(IW31–IW00)
Value
Description
IW31 IW30
IW21 IW20
IW11 IW10
IW01 IW00
0 0 No idle cycle
0 1 One idle cycle inserted
1 0 Two idle cycles inserted (Initial value)
1 1 Reserved (setting prohibited)
608