Section 6 Bus Controller
Rev. 3.00 Jan 25, 2006 page 111 of 872
REJ09B0286-0300
Bit
Bit Name
Initial Value
R/W
Description
4
AST
1
R/W
Access State Control
Selects the number of states for access to the basic
expansion area. This bit also enables or disables wait-
state insertion.
0: 2-state access space. Wait state insertion disabled in
basic expansion area access
1: 3-state access space. Wait state insertion enabled in
basic expansion area access
When the CS256E bit in SYSCR and the CPCSE bit in
BCR2 are set to 1, this bit setting is ignored in 256-
kbyte expansion area access and CP/CF expansion
area access.
3
2
WMS21
WMS20
0
0
R/W
R/W
Wait Mode Select 1, 0
Select the wait mode for access to the basic expansion
area when the AST bit is set to 1.
00: Program wait mode
01: Wait disabled mode
10: Pin wait mode
11: Pin auto-wait mode
When the CS256E bit in SYSCR and the CPCSE bit in
BCR2 are set to 1, this bit setting is ignored in 256-
kbyte expansion area access and CP/CF expansion
area access.
1
0
WC1
WC0
1
1
R/W
R/W
Wait Count 1, 0
Select the number of program wait states to be inserted
when the basic expansion area is accessed while the
AST bit is set to 1.
00: Program wait state is not inserted
01: 1 program wait state is inserted
10: 2 program wait states are inserted
11: 3 program wait states are inserted
When the CS256E bit in SYSCR and the CPCSE bit in
BCR2 are set to 1, this bit setting is ignored in 256-
kbyte expansion area access and CP/CF expansion
area access.
Summary of Contents for H8S/2158
Page 10: ...Rev 3 00 Jan 25 2006 page viii of lii...
Page 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
Page 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
Page 54: ...Rev 3 00 Jan 25 2006 page lii of lii...
Page 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
Page 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Page 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Page 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Page 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Page 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Page 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Page 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Page 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Page 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Page 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Page 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Page 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Page 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Page 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...