HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 344

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9
The block diagram of the BSC is shown in figure 9.1.
Rev. 3.00 Jan. 18, 2008 Page 282 of 1458
REJ09B0033-0300
CS0, CS2, CS3,
CS4, CS5A, CS5B,
CS6A, CS6B
MD5 to MD3
A25 to A0,
D31 to D0
BS, RD/WR, RD,
WE3(BE3) to WE0(BE0),
RAS, CAS,
CKE, DQMxx,
CE2A, CE2B
CE1A, CE1B
ICIORD, ICIOWR
[Legend]
CMNCR:
CSnWCR:
RWTCNT:
CSnBCR:
SDCR:
RTCSR:
RTCNT:
RTCOR:
controller
Interrupt
REFOUT
IOIS16
BACK
BREQ
WAIT
Common control register
CSn space wait control register (n = 0, 2, 3, 4, 5A, 5B, 6A, 6B)
Reset wait counter
CSn space bus control register (n = 0, 2, 3, 4, 5A, 5B, 6A, 6B)
SDRAM control register
Refresh timer control/status register
Refresh timer counter
Refresh time constant register
Bus State Controller (BSC)
mastership
Figure 9.1
controller
controller
controller
controller
controller
Refresh
Memory
Area
Wait
Bus
Block Diagram of BSC
CS6BWCR
CS6BBCR
Comparator
RWTCNT
CS0WCR
CS0BCR
CMNCR
RTCOR
RTCSR
RTCNT
SDCR
BSC
Internal master
Internal slave
module
module