SH7080_09 Datasheet, PDF (281/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Name
RASU, RASL
CASU, CASL
CKE
IOIS16
DQMUU
DQMUL
DQMLU
DQMLL
AH
FRAME
WAIT
BREQ
BACK
ICIOWR
ICIORD
WE
Section 9 Bus State Controller (BSC)
I/O
Function
Output Connected to RAS pin when SDRAM is used.
Output Connected to CAS pin when SDRAM is used.
Output Connected to CKE pin when SDRAM is used.
Input Indicates 16-bit I/O for PCMCIA.
This LSI does not support little endian and this pin must be held low.
Output Connected to the DQMxx pins when SDRAM is used.
DQMUU: D31 to D24 select signal
DQMUL: D23 to D16 select signal
DQMLU: D15 to D8 select signal
DQMLL: D7 to D0 select signal
Output Address hold signal when MPX-I/O is used
Output FRAME signal when burst MPX-I/O is used
Input External wait input
Input Bus request input
Output Bus acknowledge output
Output I/O write strobe signal when PCMCIA is used
Output I/O read strobe signal when PCMCIA is used
Output Strobe signal for indicating memory write cycles when PCMCIA is
used
Rev. 4.00 Dec. 15, 2009 Page 221 of 1558
REJ09B0181-0400