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9.2.5
TCR1: Timer 1 Control Register
The TCR 1, a 16-bit register, is used to control the timer 1.
Address: H'10006008
Bit
15
Bit Name
reserved reserved reserved reserved reserved reserved reserved reserved
Initial Value
0
R/W
R/W
Bit
7
Bit Name
reserved reserved reserved EDMA
Initial Value
0
R/W
R/W
Bit
Description
15 - 5
Reserved.
4
This bit is used to enable the DMA request as timer 1 reaches zero.
1: Enable the DMA request
0: Disable the DMA request
3
This bit is used to enable the timer 1 output TMO1#.
1: Output DMA request to port TMO1#
0: Output DMA request to port DREQ1#
2, 1
These two bits are used for the pre-scale option for the timer 1. The input clock for timer 1
is selected by this option.
11: Timer 1 input clock is CKIO
10: Timer 1 input clock is CKIO/4
01: Timer 1 input clock is CKIO/8
00: Timer 1 input clock is CKIO/16
0
This bit is used to start or stop the counting of the timer 1.
1: Start timer 1 counting
0: Stop timer 1 counting
14
13
12
0
0
0
R/W
R/W
R/W
6
5
4
0
0
0
R/W
R/W
R/W
11
10
9
0
0
0
R/W
R/W
R/W
3
2
1
ETMO1
PST11
PST10
0
0
0
R/W
R/W
R/W
Rev. 3.0, 03/01, page 95 of 390
8
0
R/W
0
T1STP
0
R/W
Default
0
0
0
00
0
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