Denon S-301 Service Manual page 68

TAS5121 (IC101, 201, 301, 401: 1U-3683)
TERMINAL
FUNCTION (1) FUNCTION (1)
NAME DKD
BST_A 22
BST_B 33
DGND 9, 14
DREG 8
DREG_RTN 5
DVDD 12
GND 1, 3, 16,
18, 21,
27, 28,
34
GVDD 6
GVDD_A 19, 20
GVDD_B 35, 36
M1 10
M2 11
M3 7
OTW 15
OUT_A 25, 26
OUT_B 29, 30
PVDD_A 23, 24
PVDD_B 31, 32
PWM_AP 17
PWM_BP 2
RESET 4
SD 13
(1) I = input, O = Output, P = Power
GND
1
PWM_BP
2
GND
3
RESET
4
DREG_RTN
5
GVDD
6
M3
7
DREG
8
DGND
9
M1
10
M2
11
DVDD
12
SD 13
DGND 14
OTW 15
GND 16
PWM_AP 17
18
GND
Terminal Functions
P High-side bootstrap supply (BST), external resistor and capacitor to OUT_A required
P High-side bootstrap supply (BST), external resistor and capacitor to OUT_B required
P I/O reference ground
P Digital supply voltage regulator decoupling pin, 1-µF capacitor connected to DREG_RTN
P Decoupling return pin
P I/O reference supply input: 100 Ω to DREG, decoupled to GND, 0.1-µF capacitor connected to
GND
P Power ground, connected to system GND
P Local GVDD decoupling \pin
P Gate drive input voltage
P Gate drive input voltage
I Protection mode selection pin, connect to GND
I Protection mode selection pin, connect to DREG
I Output mode selection pin; connect to GND
O Overtemperature warning output, open drain with internal pullup resistor, active-low when temper-
ature exceeds 115°C
O Output, half-bridge A
O Output, half-bridge B
P Power supply input for half-bridge A
P Power supply input for half-bridge B
I PWM input signal, half-bridge A
I PWM input signal, half-bridge B
I Reset signal, active-low
O Shutdown signal for half-bridges A and B (open drain with internal pullup resistor), active-low
GVDD_B
36
GVDD_B
35
GND
34
BST_B
33
PVDD_B
32
PVDD_B
31
OUT_B
30
OUT_B
29
GND
28
GND
27
OUT_A
26
OUT_A
25
24 PVDD_A
23 PVDD_A
22 BST_A
21 GND
20 GVDD_A
19
GVDD_A
DESCRIPTION DESCRIPTION
68
S-301