Rev. 6.0, 07/02, page 318 of 986
13.1.4
Register Configuration
The BSC has the 11 registers shown in table 13.2. In addition, the synchronous DRAM mode
register incorporated in synchronous DRAM can also be accessed as an SH7750 Series register.
The functions of these registers include control of interfaces to various types of memory, wait
states, and refreshing.
Table 13.2
BSC Registers
Name
Abbrevia-
tion
R/W
Initial
Value
P4
Address
Area 7
Address
Access
Size
Bus control register 1
BCR1
R/W
H'0000 0000 H'FF80 0000 H'1F80 0000
32
Bus control register 2
BCR2
R/W
H'3FFC
H'FF80 0004 H'1F80 0004
16
Bus control register 3
*
2
BCR3
R/W
H'0000
H'FF80 0050 H'1F80 0050
16
Bus control register 4
*
2
BCR4
R/W
H'0000 0000 H'FE0A 00F0 H'1E0A 00F0 32
Wait state control
register 1
WCR1
R/W
H'7777 7777 H'FF80 0008 H'1F80 0008
32
Wait state control
register 2
WCR2
R/W
H'FFFE EFFF H'FF80 000C H'1F80 000C 32
Wait state control
register 3
WCR3
R/W
H'0777 7777 H'FF80 0010 H'1F80 0010
32
Memory control register MCR
R/W
H'0000 0000 H'FF80 0014 H'1F80 0014
32
PCMCIA control register PCR
R/W
H'0000
H'FF80 0018 H'1F80 0018
16
Refresh timer
control/status register
RTCSR
R/W
H'0000
H'FF80 001C H'1F80 001C 16
Refresh timer counter
RTCNT
R/W
H'0000
H'FF80 0020 H'1F80 0020
16
Refresh time constant
counter
RTCOR
R/W
H'0000
H'FF80 0024 H'1F80 0024
16
Refresh count register
RFCR
R/W
H'0000
H'FF80 0028 H'1F80 0028
16
For
area 2
SDMR2
W
—
H'FF90 xxxx
*
1
H'1F90 xxxx
8
Synchronous
DRAM mode
registers
For
area 3
SDMR3
H'FF94 xxxx
*
1
H'1F94 xxxx
Notes:
*
1 For details, see section 13.2.10, Synchronous DRAM Mode Registers (SDMR).
*
2 Settable only for SH7750R.
Summary of Contents for SH7750 series
Page 106: ...Rev 6 0 07 02 page 56 of 986 ...
Page 144: ...Rev 6 0 07 02 page 94 of 986 ...
Page 242: ...Rev 6 0 07 02 page 192 of 986 ...
Page 270: ...Rev 6 0 07 02 page 220 of 986 ...
Page 360: ...Rev 6 0 07 02 page 310 of 986 ...
Page 538: ...Rev 6 0 07 02 page 488 of 986 ...
Page 706: ...Rev 6 0 07 02 page 656 of 986 ...
Page 752: ...Rev 6 0 07 02 page 702 of 986 ...
Page 780: ...Rev 6 0 07 02 page 730 of 986 ...
Page 822: ...Rev 6 0 07 02 page 772 of 986 ...
Page 986: ...Rev 6 0 07 02 page 936 of 986 ...
Page 1030: ...Rev 6 0 07 02 page 980 of 986 ...
Page 1036: ...Rev 6 0 07 02 page 986 of 986 ...