HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 140

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 Bus State Controller (BSC)
7.2
Table 7.1 lists the pin configuration of the BSC.
Table 7.1
Rev. 6.00 Jun. 12, 2007 Page 108 of 610
REJ09B0131-0600
Abbreviation
A25 to A0
D15 to D0
BS
CS0, CS3, CS4 Output Chip Select
CS5B/CE1A
CE2A
CS6B/CE1B
CE2B
RD/WR
RD
WE1(BE1)/WE
WE0(BE0)
RAS
CAS
CKE
Input/Output Pins
Pin Configuration
I/O
Output Address Bus*
I/O
Output Bus Cycle Start
Output Chip Select
Output Chip enable for PCMCIA allocated to area 5 when PCMCIA is in use
Output Chip Select
Output Chip enable for PCMCIA allocated to area 6 when PCMCIA is in use
Output Read/Write
Output Read Pulse Signal (read data output enable signal)
Output Indicates that D15 to D8 are being written to.
Output Indicates that D7 to D0 are being written to.
Output Connected to RAS pin when SDRAM is in use.
Output Connected to CAS pin when SDRAM is in use.
Output Connected to CKE pin when SDRAM is in use.
Function
Data Bus
Asserted when a normal space, burst ROM (clock synchronous
/asynchronous), or PCMCIA is accessed. Asserted at the same timing
as CAS assertion in SDRAM access.
Chip enable for PCMCIA allocated to area 5 when PCMCIA is in use
Chip enable for PCMCIA allocated to area 6 when PCMCIA is in use
Connects to WE pins when SDRAM or byte-selection SRAM is used.
Strobe signal to indicate a memory read cycle when PCMCIA is in use.
Connected to the byte select signal when byte-selection SRAM is in
use.
Strove signal to indicate a memory write cycle when PCMCIA is in use.
Connected to the byte select signal when a byte-selection SRAM is in
use.