Toshiba TMP91C815F Data Book page 233

3.15.1 Block Diagram
[Melody Generator]
EMCCR0
<TA3MCDE>
Low-speed
clock
(32.76hKHz)
selector
TA3OUT
MELALMC<AC[1:0]>
[Alarm Generator]
Internal Data Bus
MELFH,MELFLResistor
MELFH
<MELON>
Comparator(CP0)
Stop&clear
12bit counter(UC0)
15bit counter(UC1)
4096Hz
8bit counter(UC2)
Alarm wave form
generator
ALM resistor
Internal data bus
Figure 3.15.1 MLD Block Diagram
91C815-
230
Reset
MELOUT
invert
F/F
clear
Edge
ditect
ALMINT
<IALME4:0>
MELOUT
selector
invert
ALMOUT
MELALMC
MELALMC
<MELALM>
<ALMINV>
reset
TMP91C815
INTALM0(8KHz)
INTALM1(512Hz)
INTALM2(64Hz)
INTALM3(2Hz)
INTALM4(1Hz)
INTALMH
(HALT release)
MLDALM pin