11. Local Bus State Controller (LBSC)
Rev.1.00 Jan. 10, 2008 Page 380 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
Value R/W Description
11
⎯
0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
10 to 8
WTH
111
R/W
WE
Hold Cycle (
WE
Negation–
CSn
Negation Delay
Cycle)
These bits specify the number of cycles to be inserted
as the time from
WE
negation to
CSn
negation. (Only
valid when the SRAM interface, byte control SRAM
interface, or burst ROM interface is selected.)
000: No cycle inserted (0.5 cycle delayed)
001: 1 cycle inserted (1.5 cycles delayed)
010: 2 cycles inserted (2.5 cycles delayed)
011: 3 cycles inserted (3.5 cycles delayed)
100: 4 cycles inserted (4.5 cycles delayed)
101: 5 cycles inserted (5.5 cycles delayed)
110: 6 cycles inserted (6.5 cycles delayed)
111: 7 cycles inserted (7.5 cycles delayed)
7
⎯
0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
6 to 4
BSH
000
R/W
BS
Hold Cycle
These bits specify the number of cycles to extend
BS
assertion. The extension of the assertion is valid when
the RDS bits in CSnWCR are not set to 000 in reading
and when the WTS bits in CSnWCR are not set to 000
in writing
.
The total access cycle count is not changed
by setting these bits.
000:
BS
assertion is 1 cycle
001:
BS
assertion is 2 cycles
010: Setting prohibited
011: Setting prohibited
100: Setting prohibited
101: Setting prohibited
110: Setting prohibited
111: Setting prohibited
Содержание SH7781
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Страница 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Страница 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Страница 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
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