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Section 9 Bus State Controller
R01UH0134EJ0400 Rev. 4.00 Page 233 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Name I/O Function
WE0/DQML Output Indicates that D7 to D0 are being written to.
Connected to the byte select signal when a SRAM with byte
selection is connected.
Functions as the select signals for D7 to D0 when SDRAM
is connected.
RAS Output Connects to RAS pin when SDRAM is connected.
CAS Output Connects to CAS pin when SDRAM is connected.
CKE Output Connects to CKE pin when SDRAM is connected.
WAIT Input External wait input
BREQ Input Bus request input
BACK Output Bus enable output
IOIS16 Input Indicates 16-bit I/O of PCMIA.
Enabled only in little endian mode. The pin should be driven
low in big endian mode.