Section 6
Bus Controller (BSC)
Rev. 1.00 Mar. 12, 2008 Page 111 of 1178
REJ09B0403-0100
6.3.2
Bus Control Register 2 (BCR2)
BCR2 is used to specify the access mode for the extended area.
Bit Bit
Name
Initial
Value
R/W Description
7, 6
All
0
R/W
Reserved
The initial value should not be changed.
5, 4
All
1
R/W
Reserved
The initial value should not be changed.
3
ADFULLE
0
R/W
Address Output Full Enable
Controls the address output, A23 to A21, in access to the
extended area. See section 8, I/O Ports. This is not
supported while ADMXE = 1.
2
EXCKS
0
R/W
External Extension Clock Select
Selects the operating clock used in external extended
area access.
0: Medium-speed clock is selected as the operating clock
1: System clock (
φ
) is selected as the operating clock.
The operating clock is switched in the bus cycle prior to
external extended area access.
1
1
R/W
Reserved
The initial value should not be changed.
0
0
R/W
Reserved
The initial value should not be changed.
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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