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5 timer control/status register (tcsr) – Renesas H8S/2111B User Manual

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Rev. 1.00, 05/04, page 196 of 544

10.3.5 Timer

Control/Status Register (TCSR)

TCSR indicates the status flags and controls compare-match output.

TCSR_0

Bit Bit

Name

Initial
Value R/W Description

7 CMFB

0 R/(W)*

Compare-Match Flag B
[Setting condition]
When the values of TCNT_0 and TCORB_0 match
[Clearing condition]

Read CMFB when CMFB = 1, then write 0 in CMFB

6 CMFA

0 R/(W)*

Compare-Match Flag A
[Setting condition]
When the values of TCNT_0 and TCORA_0 match
[Clearing condition]
Read CMFA when CMFA = 1, then write 0 in CMFA

5 OVF 0 R/(W)*

Timer Overflow Flag
[Setting condition]
When TCNT_0 overflows from H'FF to H'00
[Clearing condition]
Read OVF when OVF = 1, then write 0 in OVF

4

ADTE

0

R/W

A/D Trigger Enable
Enables or disables A/D converter start requests by
compare-match A.
0: A/D converter start requests by compare-match A are

disabled

1: A/D converter start requests by compare-match A are

enabled

3
2

OS3
OS2

0
0

R/W
R/W

Output Select 3, 2
These bits specify how the TMO0 pin output level is to
be changed by compare-match B of TCORB_0 and
TCNT_0.
00: No change
01: 0 is output
10: 1 is output
11: Output is inverted (toggle output)

1
0

OS1
OS0

0
0

R/W
R/W

Output Select 1, 0
These bits specify how the TMO0 pin output level is to
be changed by compare-match A of TCORA_0 and
TCNT_0.
00: No change
01: 0 is output
10: 1 is output
11: Output is inverted (toggle output)

Note: * Only 0 can be written, for flag clearing.

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