TAS5717: TAS5717 BTL and PBTL with BD Modulation Codes Confirmation

Wayne Chen (ex FAE)

Part Number: TAS5717

Hi Sirs,

Would you pls assist me to review of my proposal for TAS5717 BD modulation for BTL and PBTL modes?

BTL (stereo):

------------------------------------------

#Enable PLL

0x1B = 0x00

# BD Modulation

0x20 = 0x00 89 77 72

0x11 = 0xB8

0x12 = 0x60

0x13 = 0xA0

0x14 = 0x48

# Volume Control (0dB)

0x07 = 0x00C0

#Enable Amp

0x05 = 0x00

------------------------------------------

PBTL (mono, A+B, C+D):

------------------------------------------

#Enable PLL

0x1B = 0x00

# BD Modulation

0x20 = 0x00 89 77 72

0x11 = 0xB8

0x12 = 0x60

0x13 = 0xA0

0x14 = 0x48

# PBTL

0x19 = 0x3A

0x25 = 0x 01 00 22 45

# Volume Control (0dB)

0x07 = 0x00C0

#Enable Amp

0x05 = 0x00

------------------------------------------

Thank you and Best regards,

Wayne Chen
05/21/2018

over 6 years ago

0 Shawn Zheng over 6 years ago

TI__Mastermind 24835 points

Hi Wayne
I think the confguration you shownn above is correct.
Best regards,
Shawn Zheng

0 Wayne Chen (ex FAE) over 6 years ago in reply to Shawn Zheng

Guru 15950 points

Hello Shawn,

Thanks for your advise. The CFG works on the EVM. I polished the PBTL instructions by adding mixer for mono output:

-------------------------------------------------------------
! Enable PLL
X1b 00

! BD Modulation
X20 00 89 77 72
X11 b8
X12 60
X13 a0
X14 48

! Mixer Output = L+R
X72 00 80 00 00
X73 00 80 00 00
X76 00 80 00 00
X77 00 80 00 00

! PBTL Mode
X19 3a
X25 01 00 22 45

! Enable Class-D Amp
X05 00

! Volume Control (Gain, 0x07=0x00c0=0dB)
X07 00 c0
-------------------------------------------------------------

Thanks a lot

Wayne Chen
05/23/2018

Audio

Audio forum

TAS5717: TAS5717 BTL and PBTL with BD Modulation Codes Confirmation