Section 7 Bus State Controller (BSC)
Rev. 2.00 Mar 09, 2006 page 253 of 906
REJ09B0292-0200
Signal
I/O
With Bus
Released
Description
DREQ1
I
I
DMA request 1
DACK1
O
O
DMA acknowledge 1
REFOUT
O
O
Refresh execution request output when bus is released
DQMUU/
WE3
O
Hi-Z
When synchronous DRAM is used, connected to DQM pin for the
most significant byte (D31–D24). For ordinary space, indicates
writing to the most significant byte
DQMUL/
WE2
O
Hi-Z
When synchronous DRAM is used, connected to DQM pin for the
second byte (D23–D16). For ordinary space, indicates writing to the
second byte
DQMLU/
WE1
O
Hi-Z
When synchronous DRAM is used, connected to DQM pin for the
third byte (D15–D8). For ordinary space, indicates writing to the
third byte
DQMLL/
WE0
O
Hi-Z
When synchronous DRAM is used, connected to DQM pin for the
least significant byte (D7–D0). For ordinary space, indicates writing
to the least significant byte
CAS3
O
Hi-Z
When DRAM is used, connected to
CAS
pin for the most significant
byte (D31–D24)
CAS2
O
Hi-Z
When DRAM is used, connected to
CAS
pin for the second byte
(D23–D16)
CAS1
O
Hi-Z
When DRAM is used, connected to
CAS
pin for the third byte (D15–
D8)
CAS0
O
Hi-Z
When DRAM is used, connected to
CAS
pin for the least significant
byte (D7–D0)
STATS0, 1 O
O
Bus master identification 00: CPU
01: DMAC
10: E-DMAC
11: Other
BUSHIZ
I
I
Signal used in combination with
WAIT
signal to place bus and
strobe signals in the high-impedance state without the ending bus
cycle.
Note: Hi-Z: High impedance
Содержание SH7616
Страница 10: ...Rev 2 00 Mar 09 2006 page x of xxvi ...
Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...