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LH75400/01/10/11 (Preliminary) User's Guide
BITS
8:7
6:5
4:2
1
0
Table 15-19. CTRL Register Definitions (Cont'd)
FIELD
NAME
Input Edge Select Selects the rising edge, falling edge, both edges, or ignores
all changes of the input signal that is used as the capture trigger.
00 = Capture input CTCAP1B is ignored
CAP1
01 = Rising edge of CTCAP1B
10 = Falling edge of CTCAP1B
11 = Both edges of CTCAP1B
Input Edge Select Selects the rising edge, falling edge, both edges, or ignores
all changes of the input signal that is used as the capture trigger.
00 = Capture input CTCAP1A is ignored
CAP0
01 = Rising edge of CTCAP1A
10 = Falling edge of CTCAP1A
11 = Both edges of CTCAP1A
Count Clock Select
000 = System clock/2
001 = System clock/4
010 = System clock/8
011 = System clock/16
SEL
100 = System clock/32
101 = System clock/64
110 = System clock/128
111 = CTCLK
The CS field (bit [1]) must be clear for changes to the SEL field to take effect.
Start/Stop Counter 1
CS
0 = Stop counter 1
1 = Start counter 1
Counter 1 Clear Write a 1 to clear the contents of Timer 1 to 0x0000. Write
CCL
operations of 0 are ignored. This bit always reads 0 and is reset to 0 as the
counter is cleared.
DESCRIPTION
6/17/03
Timers
15-19
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