User’s Manual U16899EJ2V0UD
242
CHAPTER 11 CLOCK OUTPUT/BUZZER OUTPUT CONTROLLER
11.1 Functions of Clock Output/Buzzer Output Controller
The clock output controller is intended for carrier output during remote controlled transmission and clock output for
supply to peripheral LSIs. The clock selected with the clock output selection register (CKS) is output.
In addition, the buzzer output is intended for square-wave output of buzzer frequency selected with CKS.
Figure 11-1 shows the block diagram of clock output/buzzer output controller.
Figure 11-1. Block Diagram of Clock Output/Buzzer Output Controller
f
X
f
X
/2
10
to f
X
/2
13
f
X
to f
X
/2
7
f
XT
BZOE
BCS1
BCS0
CLOE
CLOE
BZOE
8
4
PCL/INTP6/P140
BUZ/BUSY0/
INTP7/P141
BCS0, BCS1
Clock
controller
Prescaler
Internal bus
CCS3
Clock output selection register (CKS)
CCS2
CCS1
CCS0
Output latch
(P141)
PM141
Output latch
(P140)
PM140
Selector
Selector
Содержание MuPD78F0132H
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