Onkyo A-5VL Service Manual page 21

IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
Q601/Q602: IRS20954S DIGITAL AUDIO DRIVER-1
LEAD DEFINITIONS
Pin # Symbol
1 VDD
2 CSD
3 IN
4 VSS
5 NC
6 VREF
7 OCSET
8 DT
9 COM
10 LO
11 VCC
12 NC
13 VS
14 HO
15 VB
16 CSH
Description
Floating input positive supply
Shutdown timing capacitor, referenced to VSS
PWM non-inverting input, in phase with HO
Floating input supply return
5V reference output for setting OCSET
Low-side over-current threshold setting, reference to COM
Input for programable deadtime, reference to COM
Low-side supply return
Low-side output
Low-side logic supply
High-side floating supply return
High-side output
High-side floating supply
High-side over-current sensing input, reference to VS
VDD
1
CSD
2
IN 3
VSS 4
20954
NC 5
VREF 6
OCSET 7
DT 8
CSH
16
VB
15
HO
14
VS
13
NC
12
VCC
11
LO
10
COM
9
A-5VL