HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 207

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

8.2
Table 8.1 lists the BSC pin configuration.
Table 8.1
Pin Name
Address bus
Data bus
Bus cycle start
Chip select 0, 2 to 4 CS0, CS2 to
Chip select 5, 6
PCMCIA card select CE2A, CE2B
Read/write
Row address strobe
L
Row address strobe
U
Column address
strobe
Column address
strobe
Data enable 0
Data enable 1
Data enable 2
Input/Output Pin
Pin Configuration
Signal
A25 to A0
D15 to D0
D31 to D16
BS
CS4
CS5/CE1A,
CS6/CE1B
RD/WR
RASL
RASU
CASL
CASU
WE0/DQMLL
WE1/DQMLU/
WE
WE2/DQMUL/
ICIORD
I/O Description
O
I/O Data I/O
I/O When 32-bit bus width, data I/O
O
O
O
O
O
O
O
O
O
O
O
O
Address output
Shows start of bus cycle. During burst transfers, asserts
every data cycle.
Chip select signal to indicate area being accessed.
Chip select signal to indicate area being accessed.
CS5/CE1A and CS6/CE1B can also be used as CE1A
and CE1B of PCMCIA.
When PCMCIA is used, CE2A and CE2B
Data bus direction indicator signal. Synchronous DRAM
write indicator signal.
When synchronous DRAM is used, RASL for lower 32-
Mbyte address.
When synchronous DRAM is used, RASU for upper 32-
Mbyte address.
When synchronous DRAM is used, CASL signal for
lower 32-Mbyte address.
When synchronous DRAM is used, CASU signal for
upper 32-Mbyte address.
When memory other than synchronous DRAM is used,
selects D7 to D0 write strobe signal. When
synchronous DRAM is used, selects D7 to D0.
When memory other than synchronous DRAM is used,
selects D15 to D8 write strobe signal. When
synchronous DRAM is used, selects D15 to D8. When
PCMCIA is used, strobe signal that indicates the write
cycle.
When memory other than synchronous DRAM is used,
selects D23 to D16 write strobe signal. When
synchronous DRAM is used, selects D23 to D16. When
PCMCIA is used, strobe signal indicating I/O read.
Rev. 4.00, 03/04, page 161 of 660