IC Data Sheets
8.
8.10
Diagram
10-4-4 B04, Audio amp, Short protection, Headphone amp
, TAS5721 (U48)
Figure 8-10 Internal block diagram and pin configuration
19561_
3
01_140102.ep
s
140102
Block diagram
Pinning information
TAS5721
SDIN
LRCLK
SCLK
MCLK
RESET
PDN
SDA
PLL_FLTM
PLL_FLTP
AVDD/DVDD/
HP_VDD
PVDD
OUT_A
OUT_C
OUT_B
OUT_D
BST_A
BST_C
BST_B
BST_D
SCL
Digital
Audio
Source
I C
Control
2
Control
Inputs
LC
BTL
LC
BTL
Loop
Filter
(1)
HPR_OUT
HPL_OUT
HP_SD
HPL_IN
HPL_OUT
(Single-Ended)
GND
1
48
OUTB
OUTA
2
47
BSTB
BSTA
3
46
BSTC
PVDD
4
45
OUTC
PWM1
5
44
GND
PWM2
6
43
OUTD
HPIL
7
42
BSTD
HPOL
8
41
PVDD
HPOR
9
40
GVDD_REG
HPIR
10
39
HP_SD
HPVSS
11
38
SSTIMER
CN
12
37
AVDD_REG2
CP
13
36
GND
HPVDD
14
35
GND
GND
15
34
DVDD
FLTM
16
33
TEST
FTLP
17
32
RESET
AVDD_REG1
18
31
NC
AVDD
19
30
SCL
ADR
20
29
SDA
MCLK
21
28
SDIN1
ROSC
22
27
SCLK
GND
23
26
LRCLK
DVDD_REG
24
25
PDN
TAS5721
DCA
(Top View)
PIN NAME
PIN NUMBER
I/O
DESCRIPTION
GND
1, 15, 23, 35, 36, 44
P
General ground connections
OUT_x
2, 43, 45, 48
AO
Outputs for the four half-bridges that are used to create the 2 Full Bridge Output
Channels
BST_x
3, 42, 46, 47
P
Connection point for the boot strap capacitors for each of the output half-bridges
PVDD
4, 41
P
Power Supply inputs for each of the four output half-bridges
PWMx
5, 6
AO
Low-level PWM outputs
HPIx
7, 10
AI
Input for signal into either the right or left headphone input
HPOx
8, 9
AO
Right or Left Channel of Headphone Output
HPVSS
11
P
-3.3V supply generated by chargepump for ground centered headphone output
CN
12
AIO
Negative terminal capacitor connection for headphone charge pump
CP
13
AIO
Positive terminal capcitor connection for headphone charge pump