HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 322
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 12 Bus State Controller (BSC)
12.2
Table 12.1 shows pin configuration of the BSC.
Table 12.1 Pin Configuration
Rev. 4.00 Sep. 14, 2005 Page 272 of 982
REJ09B0023-0400
Name
A25 to A0
D31 to D0
BS
CS0, CS2 to CS4
CS5A
RD/WR
RD
WE3/ICIOWR/AH
WE2/ICIRD
WE1/WE
Input/Output Pins
I/O
Output
I/O
Output
Output
Output
Output
Output
Output
Output
Output
Function
Address bus
Data bus
Bus cycle start
Chip select
Chip select
Active only for address map 1
Read/write
Connects to WE pins when SDRAM or byte-selection SRAM is
connected.
Read pulse signal (read data output enable signal)
Indicates that D31 to D24 are being written to.
Connected to the byte select signal when a byte-selection SRAM is
connected.
Functions as the address hold signal when the MPX-IO is used.
Functions as the selection signals for D31 to D24 when SDRAM is
connected.
Indicates that D23 to D16 are being written to.
Connected to the byte select signal when a byte-selection SRAM is
connected.
Functions as the selection signals for D23 to D16 when SDRAM is
connected.
Indicates that D15 to D8 are being written to.
Connected to the byte select signal when a byte-selection SRAM is
connected.
Functions as the selection signals for D15 to D8 when SDRAM is
connected.
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