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Sharp SM-SX1 Service Manual page 45

1-bit amplifier
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IC907 RH-iX2845AFZZ: System Microcomputer (IX2845AF)
DATA-IN
DATA-OUT
IC_CLK
VOLDIS
KEYA
KEYB
KEYC
ICA4~ICA7 VHiHiP2100/-1: FET Driver (HIP2100)
Terminal Name
Pin No.
1
VDD
2
HB
3
MO
4
HS
5
HI
6
LI
7
VSS
8
LO
1
VDD
2
HB
3
HO
HS
4
LED3,P83
1
LED2,P82
2
LED1,P81
3
LED0,P80
4
AN0,PA0
KEY
5
AN1,PA1
6
AN2,PA2
7
AN3,PA3
8
AN4,PA4
9
AN5,PA5
10
AN6,PA6
11
Figure 45-1 BLOCK DIAGRAM OF IC
Positive Supply to lower gate drivers. De-couple this pin to Vss (pin 7).
Bootstrap diode connected to HB (pin 2).
High-Side Bootstrap supply. External bootstrap capacitor is required.
Connect positive side of bootstrap capacitor to this pin. Bootstrap diode is on-chip.
High-Side Output. Connect to gate of High-Side power MOSFET.
High-Side Source connection. Connect to source of High-Side power MOSFET.
Connect negative side of bootstrap capacitor to this pin.
High-Side input.
Low-Side input.
Chip negative supply, generally will be ground.
Low-Side Output. Connect to gate of Low-Side power MOSFET.
8
LO
7
VSS
6
LI
5
HI
Figure 45-2 BLOCK DIAGRAM OF IC
33
32
31
30
29
28
27
26
25
24
23
Function
1
VDD
UNDER
VOLTAGE
HI
5
UNDER
VOLTAGE
6
LI
7
VSS
– 45 –
AUX3
P63
DIG_MUTE
P62
DIG_A
P61
DIG_B
P60
IC_STB
P22,IRQ2
P_IN
P21,IRQ1,SENS
PROTECT
P20,IRQ0
D DATA
P14,TM4IO
D LATCH
P13,TM3IO
D CLK
P12,TM2IO
CL_CONT
P11
LEVEL SHIFT
DRIVER
DRIVER
SM-SX1/SX1W
2
HB
3
HO
HS
4
8
LO

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Sm-sx1w