µ
PD75512
21
6.3
CLOCK OUTPUT CIRCUIT
The clock output circuit outputs clock pulse from the P22/PCL pin. This clock pulse is used for the remote control
output, peripheral LSIs, etc.
• Clock output (PCL):
Φ
, 524, 262, 65.5 kHz (operating at 4.19 MHz)
• Buzzer output (BUZ): 2 kHz, (operating at 4.19 MHz, or 32.768 kHz)
Selector
Output
buffer
PCL/P22
Bit 2 of PMGB
PORT2.2
Port 2 input/
output mode
specification
bit
P22 output
latch
Internal bus
CLOM3 CLOM2 CLOM1 CLOM0 CLOM
4
Φ
f
X
/2
3
f
X
/2
4
f
X
/2
6
From the
clock
generator
Fig. 6-2 Clock Output Circuit Configuration
Remarks:
A measures to prevent outputting narrow width pulse when selecting clock output enable/
disable is taken.
Содержание mPD75512
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