SH7670 Datasheet, PDF (198/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 7 Bus State Controller (BSC)
7.2 Input/Output Pins
Table 7.1 shows the pin configuration of the BSC.
Table 7.1 Pin Configuration
Name
A25 to A0
D31 to D0
BS
CS0, CS3, CS4
CS5/CE1A,
CS6/CE1B
CE2A, CE2B
RD/WR
RD
WE3/DQMUU/
ICIOWR
WE2/DQMUL/
ICIORD
I/O
Function
Output Address bus
I/O
Data bus
Output Bus cycle start
Output Chip select
Output Chip select
Function as PCMCIA card select signals for D7 to D0 when PCMCIA
is used.
Output Function as PCMCIA card select signals for D15 to D8.
Output Read/write
Connects to WE pins when SDRAM or SRAM with byte selection is
connected.
Output Read pulse signal (read data output enable signal)
Functions as a strobe signal for indicating memory read cycles when
PCMCIA is used.
Output Indicates that D31 to D24 are being written to.
Connected to the byte select signal when a SRAM with byte
selection is connected.
Functions as the select signals for D31 to D24 when SDRAM is
connected.
Functions as a strobe signal for indicating I/O write cycles when
PCMCIA is used.
Output Indicates that D23 to D16 are being written to.
Connected to the byte select signal when a SRAM with byte
selection is connected.
Functions as the select signals for D23 to D16 when SDRAM is
connected.
Functions as a strobe signal for indicating I/O read cycles when
PCMCIA is used.
Rev. 1.00 Nov. 14, 2007 Page 172 of 1262
REJ09B0437-0100