Figure 11.2 Block Diagram Of Buzzer Output; Block Diagram Of Buzzer Output - Fujitsu F2MC-8L MB89620 Series Hardware Manual

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11.

Block Diagram of Buzzer Output

The buzzer output consists of the following two blocks:
• Buzzer output selector
• Buzzer register (BZCR)
n Block Diagram of Buzzer Output
BZCR
F : Source oscillation
C
Buzzer output selector
l
Selects one of the three frequencies (square waves) output from the timebase timer.
BZCR register
l
The BZCR register to set the buzzer output frequency and enable buzzer output.
Buzzer output is enabled if a output frequency is specified (other than "00
register.
MB89620 series
— — — — —

2 13 /F
C


From timebase

2 12 /F
C
timer 


11
2 /F
C

Figure 11.2 Block Diagram of Buzzer Output

Internal data bus
— BZ1 BZ0
Select
Buzzer output
Buzzer output
selector
CHAPTER 11 BUZZER OUTPUT
Pin
P44/BZ
") in the BZCR
B
227
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