SLAAEG6A November   2023  – September 2024 TAA5212 , TAA5242 , TAA5412-Q1 , TAC5111 , TAC5111-Q1 , TAC5112 , TAC5112-Q1 , TAC5211 , TAC5212 , TAC5212-Q1 , TAC5311-Q1 , TAC5312-Q1 , TAC5411-Q1 , TAC5412-Q1 , TAD5112 , TAD5112-Q1 , TAD5142 , TAD5212 , TAD5212-Q1 , TAD5242

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Operating Modes for the Clocking
    1. 2.1 Automatic Modes of Operation
  6. 3Clocking Modes
    1. 3.1 Auto Primary BCLK Ratio
    2. 3.2 Auto Secondary BCLK Ratio
    3. 3.3 Auto MCLK Ratio
    4. 3.4 Auto MCLK Fixed
    5. 3.5 Custom Mode and Semi Automatic Mode of Operation
      1. 3.5.1 Semi-Automatic Mode
    6. 3.6 Additional Clocks
      1. 3.6.1 PDM Clocks
      2. 3.6.2 Boost Clock
      3. 3.6.3 SAR Clock
      4. 3.6.4 CLKOUT
  7. 4Clocking in Hardware Controlled Devices
  8. 5Revision History

3.1 Auto Primary BCLK Ratio

Primary ASI should be Target, Secondary ASI can be either Controller, Target or disabled Primary ASI BCLK provided by user is used as Reference clock for the PLL or Audio Root Source clock.

Table 3-1 Register Settings to Setup Mode
I2C Bits
CLK_SRC_SEL (B0_P0_R52[3:1]) – must be 3’d0
CUSTOM_CLK_CFG register (B0_P0_R50[0]) – must be 1’b0
PASI_SAMP_RATE (B0_P0_R50[7:2])
PASI_FS_BCLK_RATIO {B0_P0_R56[5:0], B0_P0_R57
Must be configured as 0 for the device to auto detect
PASI_MST_CFG B0_P0_R55[4]
0 to operate Primary ASI as Target(Default)

To operate Secondary ASI as Controller Mode, we need to specify the Fs Rate as well as the BCLK to Fs ration

Table 3-2 Register Setting to Setup as Controller
Mode Controller
SASI_MST_CFG B0_P0_R55[3]
1 to operate Secondary ASI as Controller, 0 to operate Secondary ASI as Target(Default)
SASI_FS_BCLK_RATIO B0_P0_R58[5:0], B0_P0_R59
SASI_SAMP_RATE B0_P0_R51[7:2]
FS_MODE B0_P0_R55[0]
1 to generate Fsync frequency as a multiple of 44.1KHz , 0 to generate Fsync frequency as a multiple of 48KHz (Default)