
Section 12 Bus State Controller (BSC)
Rev. 4.00 Sep. 14, 2005 Page 281 of 982
REJ09B0023-0400
Bit Bit
Name
Initial
Value R/W Description
0 HIZCNT
0 R/W
High-Z
Control
Specifies the state in software standby mode and bus
released for CKIO2,
RASU
,
RASL
,
CASU
, and
CASL
.
0: High impedance in software standby mode and bus
released for CKIO2,
RASU
,
RASL
,
CASU
, and
CASL
.
1: Driven in standby mode and bus released for
CKIO2,
RASU
,
RASL
,
CASU
, and
CASL
.
12.4.2
CSn Space Bus Control Register (CSnBCR) (n = 0, 2, 3, 4, 5A, 5B, 6A, 6B)
CSnBCR is a 32-bit readable/writable register that specifies the function of each area, the number
of idle cycles between bus cycles, and the bus-width. This register is initialized to H'36DB0600 by
a power-on reset, and it is not initialized by a manual reset and in the standby mode.
Do not access external memory other than area 0 until CSnBCR register initialization is
completed.
Bit Bit
Name
Initial
Value
R/W Description
31
0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
30
29
28
IWW2
IWW1
IWW0
1
1
1
R/W
R/W
R/W
Idle Cycles between Write-Read Cycles and Write-
Write Cycles
These bits specify the number of idle cycles to be
inserted after the access to a memory that is
connected to the space. The target access cycles are
the write-read cycle and write-write cycle.
000: No idle cycle inserted
001: 1 idle cycle inserted
010: 2 idle cycles inserted
011: 4 idle cycles inserted
100: 6 idle cycles inserted
101: 8 idle cycles inserted
110: 10 idle cycles inserted
111: 12 idle cycles inserted
Summary of Contents for HD6417641
Page 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Page 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Page 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Page 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Page 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Page 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Page 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Page 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Page 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Page 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Page 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Page 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Page 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Page 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Page 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Page 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Page 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Page 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Page 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
Page 1035: ......
Page 1036: ...SH7641 Hardware Manual...