HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 268
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HD6417615
Manufacturer Part Number
HD6417615
Description
Hardware Manual
Manufacturer
Hitachi Semiconductor
Datasheet
1.HD6417615.pdf
(873 pages)
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7.1.2
Figure 7.1 shows a block diagram of the BSC.
WCR: Wait control register
BCR: Bus control register
MCR: Individual memory control register
Block Diagram
controller
Interrupt
STATS1, 0
WE3–WE0
CS4–CS0
REFOUT
CMI interrupt request
RD/WR
IVECF
WAIT
CAS
RAS
CKE
RD
BS
Figure 7.1 BSC Block Diagram
Memory
control
control
control
Area
Wait
unit
unit
unit
RTCSR: Refresh timer control/status register
RTCNT: Refresh timer counter
RTCOR: Refresh time constant register
Comparator
RTCOR
RTCSR
RTCNT
WCR1
WCR2
WCR3
BCR1
BCR2
BCR3
MCR
interface
Bus
BSC
251
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