Toshiba TLCS-900/L1 Series Manual page 256

(13) Melody/alarm generator
Symbol Name Address
Alarm
ALM pattern 330H
register
Melody/
331H
alarm
MELALMC
control
register
Melody
MELFL 332H
frequency
register-L
Melody
MELFH 333H
frequency
register-H
Alarm
interrupt
ALMINT 334H
enable
register
7 6 5
AL8 AL7 AL6
0 0 0
FC1 FC0 ALMINV
R/W R/W
0 0
Free-run counter Alarm
control frequency
00: Hold invert
01: Restart 1: Invert
10: Clear
11: Clear and start
ML7 ML6 ML5
0 0 0
Melody frequency set (Low 8 bits)
MELON
R/W
0
Melody
counter
control
0: Stop and
clear
1: Start
−
R/W
0
Always
write 0
91C824-254
4 3 2
AL5 AL4 AL3
R/W
0 0 0
Alarm pattern set
− − −
R/W R/W R/W
0 0 0
Always write 0
ML4 ML3 ML2
R/W
0 0 0
ML11 ML10
R/W
0 0
Melody frequency set (High 4 bits)
IALM4E IALM3E IALM2E
R/W
0 0 0
INTALM4 to INTALM0 alarm interrupt enable
TMP91C824
1 0
AL2 AL1
0 0
−
MELALM
R/W R/W
0 0
Output
frequency
0: Alarm
1: Melody
ML1 ML0
0 0
ML9 ML8
0 0
IALM1E IALM0E
0 0
2008-02-20