TAS5760L Datasheet, PDF (46/77 Pages) Texas Instruments – Check for Samples: TAS5760L

TAS5760L
SLOS782B – JULY 2013 – REVISED SEPTEMBER 2015
10.2.3 Mono PBTL Using Software Control
www.ti.com
VDD
10 kΩ
System Processor
&
Associated Passive
Components
HIGH→ 1101101[ ^R/ W]
LOW → 1101100[^R/ W]
VDD
1.0 µF
1.0 µF
1
2
1.0 µF
3
4
5
6
7
8
9
10
10 kΩ
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SFT_CLIP
GVDD_REG 48
ANA_REG
GGND
47
VCOM
AVDD
46
ANA_REF
PVDD
45
SPK_FAULT
PVDD
44
SPK_SD
BSTRPA+ 43
FREQ/SDA
SPK_OUTA+ 42
PBTL/SCL
PGND
41
DVDD
SPK_OUTA-
40
SPK_GAIN0
BSTRPA- 39
SPK_GAIN1
BSTRPB+ 38
SPK_SLEEP/ADR SPK_OUTB- 37
MCLK
PGND
36
SCLK
SPK_OUTB+ 35
SDIN
BSTRPB- 34
LRCK
PVDD
33
DGND
PVDD
32
NC
NC
31
NC
NC
30
NC
NC
29
NC
NC
28
NC
NC
27
NC
NC
26
NC
NC
25
1.0 µF
PVDD
0.22 µF
0.1 µF
0.22 µF
0.22 µF
470 µF
0.22 µF
0.1 µF
LFILT
C_FILT
C_FILT
LFILT
Figure 49. Mono PBTL Using Software Control
10.2.3.1 Design Requirements
For this design example, use the parameters listed in Table 13 as the input parameters.
PARAMETER
Low Power Supply
High Power Supply
Host Processor
Output Filters
Speakers
Table 13. Design Parameters
EXAMPLE
3.3 V
5 V to 15 V
I2S Compliant Master
I2C Compliant Master
GPIO Control
Inductor-Capacitor Low Pass Filter
4 Ω to 8 Ω
10.2.3.2 Detailed Design Procedure
10.2.3.2.1 Startup Procedures- Software Control Mode
1. Configure all digital I/O pins as required by the application using PCB connections (that is SPK_GAIN[1:0] =
11, ADR, etc.)
2. Start with SPK_SD Pin = LOW
3. Bring up power supplies (it does not matter if PVDD/AVDD or DVDD comes up first, provided the device is
held in shutdown.)
4. Once power supplies are stable, start MCLK, SCLK, LRCK
5. Configure the device via the control port in the manner required by the use case, making sure to mute the
device via the control port
6. Once power supplies and clocks are stable and the control port has been programmed, bring SPK_SD HIGH
7. Unmute the device via the control port
8. The device is now in normal operation
46
Submit Documentation Feedback
Product Folder Links: TAS5760L
Copyright © 2013–2015, Texas Instruments Incorporated