Read Sharp HT-SB250 (serv.man2) Service Manual online
HT-SB250
7 – 9
IC901 VHISTA333BW-1 : 2.1 Channels High Efficiency Digital Audio System ( STA333BW ) ( 2/2 )
PIN
NAME
TYPE
DESCRIPTION
1
GND_SUB
Input / Output
Subtrate ground
2
SA
Input
I²C Select Address
3
Test_Mode
Input
This pin must be connected to GROUND
4
Vss
Input / Output
Internal reference at Vcc - 3.3V
5
Vcc_REG
Input / Output
Internal Vcc reference
6
OUT2B
Output
Output half bridge 2B
7
GND2
Input / Output
Power negative supply
8
Vcc2
Input / Output
Power positive supply
9
OUT2A
Output
Output half bridge 2A
10
OUT1B
Output
Output half bridge 1B
11
Vcc1
Input / Output
Power positive supply
12
GND1
Input / Output
Power negative supply
13
OUT1A
Input / Output
Output half bridge 1A
14
GND_REG
Input / Output
Internal Ground reference
15
Vdd
Input / Output
Internal 3.3V reference voltage
16
CONFIG
Input
Paralleled mode command
17
OUT3B/DDX3B
Output
PWM Out CH3B - External Bridge
18
OUT3A/DDX3A
Output
PWM Out CH3A - External Bridge
19
EAPD/OUT4A
Output
Power Down for External Bridge
20
TWARN/OUT4B
Input
Thermal warning from External Bridge
21
Vdd_DIG
Input / Output
Positive Supply Digital
22
GND_DIG
Input / Output
Digital Ground
23
PWRDN
Input
Power Down
24
PLL_Vdd
Input / Output
Positive Supply for PLL
25
PLL_FILTER
Input
Connection to PLL Filter
26
PLL_GND
Input / Output
Negative Supply for PLL
27
XTI
Input
PLL Input Clock
28
BICKI
Input
I²S Serial Clock
29
LRCKI
Input
I²S Left / Right Clock
30
SDI_12
Input
I²S Serial Data Channels 1&2
31
RESET
Input
Reset
32
INT_LINE
Output
Fault Interrupt
33
SDA
Input / Output
I²C Serial Data
34
SCL
Input
I²C Serial Clock
35
GND_DIG
Input / Output
Digital Ground
36
Vdd_DIG
Input / Output
Digital Supply
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