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C8051F120/1/2/3/4/5/6/7
25.2.3. High Speed Output Mode
In High Speed Output mode, a module's associated CEXn pin is toggled each time a match occurs between the PCA
Counter and the module's 16-bit capture/compare register (PCA0CPHn and PCA0CPLn) Setting the TOGn, MATn,
and ECOMn bits in the PCA0CPMn register enables the High-Speed Output mode.
Figure 25.6. PCA High Speed Output Mode Diagram
Write to
PCA0CPLn
0
ENB
Reset
Write to
PCA0CPHn
ENB
1
Enable
PCA
Timebase
306
PCA0CPMn
P
E
C
C
M
T
P
E
W
C
A
A
A
O
W
C
M
O
P
P
T
G
M
C
1
n
M
P
N
n
n
F
6
n
n
n
n
n
x
0 0
0 x
PCA0CPLn
PCA0CPHn
16-bit Comparator
PCA0L
PCA0H
Rev. 1.2
PCA
Interrupt
PCA0CN
C
C
C
C
C
C
C
C
F
R
C
C
C
C
C
C
F
F
F
F
F
F
5
4
3
2
1
0
0
Match
1
TOGn
Toggle
0
CEXn
Crossbar
1
Port I/O
- Quick Links:
- Jtag Debug and Boundary Scan
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