Appendix B Internal I/O Registers
Rev. 7.00 Mar 10, 2005 page 555 of 652
REJ09B0042-0700
B.2 Functions
Bit
Initial value
R/W
7
0
W
6
0
W
5
0
W
4
0
W
3
0
W
2
0
W
1
0
W
0
TOLH CKSH2 CKSH1 CKSH0 TOLL CKSL2 CKSL1 CKSL0
0
W
TCRFTimer Control Register F
H'B6
Timer F
Toggle output level L
Set to low level
Set to high level
16-bit mode, counts on TCFL overflow signal
Internal clock: φ/32
Internal clock: φ/16
Internal clock: φ/4
Internal clock: φ
w
/4
0
1
Toggle output level H
0
1
Set to low level
Set to high level
Clock select H
0
1
1
1
1
*
0
0
1
1
*
0
1
0
1
Counts on external event (TMIF) rising/
falling edge
Clock select L
1
1
1
1
0
0
1
1
0
1
0
1
Internal clock: φ/32
Internal clock: φ/16
Internal clock: φ/4
Internal clock: φ
w
/4
0 **
* Don't care
R
W
R/W

Read only
Write only
Read and write
See relevant register
description
Possible types of access
Initial bit values
Dashes () indicate
undefined bits.
Bit numbers
Register acronym
Register name
Address to which the register is mapped.
When displayed with two-digit number,
this indicates the lower address,
and the upper address is HFF.
Name of on-chip
supporting module
Names of the bits.
Dashes () indicate
reserved bits.
Full name of bit
Descriptions of bit
settings