HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 346
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 9
Rev. 3.00 Jan. 18, 2008 Page 284 of 1458
REJ09B0033-0300
Name
WE3(BE3)/DQMUU/
ICIOWR
WE2(BE2)/DQMUL/
ICIORD
WE1(BE1)/DQMLU/
WE
WE0(BE0)/DQMLL
RAS
CAS
CKE
IOIS16
WAIT
BREQ
BACK
MD5 to MD3
REFOUT
Bus State Controller (BSC)
I/O
O
O
O
O
O
O
O
I
I
I
O
I
O
Function
Indicates that D31 to D24 are being written to.
Connected to the byte select signal when a byte-selection SRAM
is connected.
Corresponds to signals D31 to D24 when SDRAM is connected.
Functions as the I/O write strobe signal when the PCMCIA is
used.
Indicates that D23 to D16 are being written to.
Connected to the byte select signal when a byte-selection SRAM
is connected.
Corresponds to signals D23 to D16 when the SDRAM is used.
Functions as the I/O read strobe signal when the PCMCIA is used.
Indicates that D15 to D8 are being written to.
Connected to the byte select signal when a byte-selection SRAM
is connected.
Corresponds to signals D15 to D8 when the SDRAM is used.
Functions as the memory write strobe signal when the PCMCIA is
used.
Indicates that D7 to D0 are being written to.
Connected to the byte select signal when a byte-selection SRAM
is connected.
Corresponds to select signals D7 to D0 when the SDRAM is used.
Connects to RAS pin when SDRAM is connected.
Connects to CAS pin when SDRAM is connected.
Connects to CKE pin when SDRAM is connected.
PCMCIA 16-bit I/O signal
Valid only in little endian mode.
Pulled low in bit endian mode.
External wait input (sampled at the falling edge of CKIO)
Bus request input
Bus acknowledge output
MD5: Selects data alignment (big endian or little endian)
MD4 and MD3: Specify area 0 bus width (8/16/32 bits)
Bus mastership request signal for refreshing
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