Sharp HT-SB250 (serv.man2) Service Manual ▷ View 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
HT-SB250
7
– 10
IC902 VHISTA533W+-1 : 2.2A QUAD POWER HALF BRIDGE ( STA533W ) ( 1/2 )
Figure 7-8 BLOCK DIAGRAM OF IC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
VccSign
VccSign
Vss
VDD
VDD
VDD
Vss
IN2B
IN2A
IN1B
IN1A
TH_WAR
FAULT
TRI-STATE
PWRDN
CONFIG
GND-Reg
GND-Clean
V
L
GND-SUB
OUT2B
OUT2B
Vcc2B
Vcc1A
OUT1A
GND2B
GND2A
Vcc2A
OUT2A
OUT2A
OUT1B
OUT1B
Vcc1B
GND1B
OUT1A
D04AU1564
N.C.
GND1A
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
HT-SB250
7 – 11
IC902 VHISTA533W+-1 : 2.2A QUAD POWER HALF BRIDGE ( STA533W ) ( 2/2 )
PIN
NAME
DESCRIPTION
1
GND_SUB
Subtrate ground
2 ; 3
OUT2B
Output half bridge 2B
4
Vcc2B
Positive Supply
5
GND2B
Negative supply
6
GND2A
Negative supply
7
Vcc2A
Positive Supply
8 ; 9
OUT2A
Output half bridge 2A
10 ; 11
OUT1A
Output half bridge 1B
12
Vcc1B
Positive Supply
13
GND1B
Negative supply
14
GND1A
Negative supply
15
Vcc1A
Positive Supply
16 ; 17
OUT1A
Output half bridge 1A
18
NC
Not Connected
19
GND-clean
Logical Ground
20
GND-Reg
Ground for regulator Vdd
21 ; 22
Vdd
5V Regulator referred to ground
23
VL
Logic Reference Voltage
24
CONFIG
Configuration pin
25
PWRDN
Stand-by pin
26
TRI-STATE
Hi-Z pin
27
FAULT
Fault pin advisor
28
TH-WAR
Thermal warning advisor
29
IN1A
Input half bridge 1A
30
IN1B
Input half bridge 1B
31
IN2A
Input half bridge 2A
32
IN2B
Input half bridge 2B
33 ; 34
Vss
5V Regulator referred to +Vcc
35 ; 36
Vcc Sign
Signal Positive Supply
HT-SB250
7
– 12
-MEMO-
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