Toshiba H1 Series Data Book page 746

(21) Melody/alarm generator
Symbol Name
Address
Alarm-
ALM pattern 1330H
register
Melody/
alarm
MELALMC 1331H
control
register
Melody
MELFL frequency 1332H
L-register
Melody
MELFH 1333H
frequency
H-register
Alarm
interrupt
ALMINT 1334H
enable
register
7 6 5
AL8 AL7 AL6
0 0 0
FC1 FC0 ALMINV
0 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
MELON
R/W
0
Melody
counter
control
0: Stop
and
clear
1: Start
−
0
Always
write "0".
92CZ26A-743
4 3
AL5 AL4
R/W
0 0
Alarm pattern setting
− −
R/W
0 0
Always write "0".
ML4 ML3
R/W
0 0
Melody frequency set (Low 8bit)
ML11
0
Melody frequency set (Upper 4 bits)
IALM4E IALM3E
R/W
0 0
1:INTALM4 1:INTALM3 1:INTALM2
(1Hz) (2Hz)
enable enable
TMP92CZ26A
2 1 0
AL3 AL2 AL1
0 0 0
− −
MELALM
0 0 0
Output
frequency
0: Alarm
1: Melody
ML2 ML1 ML0
0 0 0
ML10 ML9 ML8
R/W
0 0 0
IALM2E IALM1E IALM0E
0 0 0
1:INTALM1 1:INTALM0
(64Hz) (512Hz) (8192Hz)
enable enable enable