eZAudio TPA2015D1EVM Power-up Sequence
•
Display inflection point
Note: Output power and efficiency are calculated by MSP430 MCU.
Table 3. MSP430 MCU A/D Signal Equivalents
(1)
TPA2015D1
MSP430 MCU
VRMS_AD
P6.1 (pin 98)
VDD_AD
P6.2 (pin 99)
IDD_AD
P6.3 (pin 100)
(1)
A/D VFS range is 3V (internal reference is set to 3V)
A.3
eZAudio TPA2015D1EVM Power-up Sequence
1. ENB = Low
2. END = Low
3. REG_EN = Low
4. Gain0 = Low
5. Gain1 = Low
6. AGC0 = Low
7. AGC1 = Low
8. Set Digital pot wiper resistance to position #41 (write 0x29 to register 0x00) and wait 50 ms.
9. REG_EN = High
10. Measure supply voltage to make sure it
’
s around 3.6V
11. END = High
12. ENB = High
Note: After the preceding sequence, the user can change gain and inflection point settings and
activate/deactivate boost converter.
22
Technical Specifications
SLOU312
–
June 2011
Copyright
©
2011, Texas Instruments Incorporated