[ TAS5414A / B ] Replacement and Difference
Hi,
My customer has been using TAS5414A for past few years, and now they start to working on TAS5414B for new development. As first trial, they just replaced IC from TAS5414A to TAS5414B, however, it did not work at all.
Based on other discussion below, I have looked into their initialization sequence as below. Can you please review the sequence for A and point out which sequence do not fit with B version? (Please be noted that the system has two TAS5414As as Master and Slave, so some steps (data) are different.)
Also, during register comparison, I have noticed some of registers(both READ only register and R/W register) are different and need to be modified.
For my customer case, I have recognized following modifications are necessary at least.
Slave 0x09 Should not write any data to D7:D4
Master 0x0A D6 need to be "1" to send Sync Pulse from OSC_SYNC pin for slave device
Master 0x0B D7 need to be "1" to enable output of Sync Pulse
Master/Slave 0x0E/0x0F Should not write any data to these registers
Master/Slave 0x10 Need to be set correctly
Can you help to review this as weel?
Other Reference
TAS5414B-Q1
http://e2e.ti.com/support/amplifiers/audio_amplifiers/f/6/t/369187
Thanks,
Ken