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3.15.2 Control registers
7
ALM
bit Symbol
AL8
(0330H)
Read/Write
After reset
Function
7
MELALMC
bit Symbol
FC1
(0331H)
Read/Write
After reset
Free-run counter control
00: Hold
01: Restart
Function
10: Clear
11: Clear & Start
(note1): MELALMEC<FC1> is read always "0".
(note2): When setting MELALMC register except <FC1:0> during the free-run counter is running , <FC1:0> is kept "01".
7
MELFL
bit Symbol
ML7
(0332H)
Read/Write
After reset
Function
7
MELFH
bit Symbol
MELON
(0333H)
Read/Write
R/W
After reset
0
Control
melody
counter
Function
0: Stop &
Clear
1: Start
7
ALMINT
bit Symbol
(0334H)
Read/Write
After reset
Function
ALM R register
6
5
AL7
AL6
AL5
Setting alarm pattern
MLDALMC register
6
5
FC0
ALMINV
R/W
R/W
0
0
Alarm
Wavefor
m invert
1:INVERT
MELFL register
6
5
ML6
ML5
ML4
Setting melody frequency (lower 8bit)
MELFH register
6
5
ALMINT register
6
5
4
IALM4E
Write "0"
91C815-
4
3
2
AL4
AL3
R/W
0
4
3
2
Write "0"
4
3
2
ML3
ML2
R/W
0
4
3
2
ML11
ML10
R/W
0
Setting melody frequency(upper 4bit)
3
2
IALM3E
IALM2E
R/W
0
1:Interrupt enable for INTALM4〜INTALM0
231
TMP91C815
1
0
AL2
AL1
1
0
MELALM
R/W
0
Output
Waveform
select
0: Alarm
1: Melody
1
0
ML1
ML0
1
0
ML9
ML8
1
0
IALM1E
IALM0E
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