Sharp 1-BIT AMPLIFIER SM-SX1 Service Manual page 45

IC907 RH-iX2845AFZZ: System Microcomputer (IX2845AF)
DATA-IN
DATA-OUT
IC_CLK
KEY
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
VDD 1
2
HB
3
HO
HS 4
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LED3,P83
1
LED2,P82
2
LED1,P81
3
LED0,P80 4
AN0,PA0
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.
1
VDD
8 LO
HI 5
7
VSS
6
LI
5 HI
6
LI
7
VSS
Figure 45-2 BLOCK DIAGRAM OF IC
– 45 –
P63
33
P62
32
P61
31
P60
30
P22,IRQ2
29
P21,IRQ1,SENS
28
P20,IRQ0
27
P14,TM4IO
26
P13,TM3IO
25
P12,TM2IO
24
P11
23
Function
UNDER
LEVEL SHIFT
VOLTAGE
UNDER
VOLTAGE
SM-SX1/SX1W
AUX3
DIG_MUTE
DIG_A
DIG_B
IC_STB
P_IN
PROTECT
D DATA
D LATCH
D CLK
CL_CONT
2
HB
3
HO
DRIVER
HS
4
8
LO
DRIVER