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SH7672 Datasheet(PDF) 197 Page - Renesas Technology Corp

Part # SH7672
Description  32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series
PDF  1292 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7672 Datasheet(HTML) 197 Page - Renesas Technology Corp

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Section 7
Bus State Controller (BSC)
Rev. 1.00 Nov. 14, 2007 Page 171 of 1262
REJ09B0437-0100
Figure 7.1 shows a block diagram of the BSC.
CMNCR
CS0WCR
CS7WCR
CS0BCR
CS7BCR
SDCR
RTCSR
RTCNT
RTCOR
Comparator
Bus
mastership
controller
Wait
controller
Area
controller
Memory
controller
Refresh
controller
[Legend]
BSC
CS0 to CS7
REFOUT
WAIT
MD
A25 to A0,
D31 to D0
BACK
BREQ
BS, RD/WR,
RD, WE3 to WE0,
RASU, RASL,
CASU, CASL
CKE, DQMxx,
AH,
FRAME, IOIS16,
CE2A, CE2B
CMNCR:
CSnWCR:
CSnBCR:
SDCR:
RTCSR:
RTCNT:
RTCOR:
Common control register
CSn space wait control register (n = 0 to 7)
CSn space bus control register (n = 0 to 7)
SDRAM control register
Refresh timer control/status register
Refresh timer counter
Refresh time constant register
Figure 7.1
Block Diagram of BSC



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