Cirrus Logic CDB42448 - Manual (Page 19)

CDB42448
DS648DB2 19
5.3.3 ADC MUX (ADC.CLK_MUX)
Default = 11
Function:
This MUX selects the sub-clock lines from the CS8416, DAC, DSP Header and the sub-clocks from
the TDMer internal to the FPGA (see Figure 3 on page 10).
5.3.4 FPGA CLOCKS TO ADC CLOCKS (FPGA->ADC)
Default = 0
0 - FPGA Masters ADC clock bus
1 - FPGA Slave to ADC clock bus
Function:
This bit toggles a control line for the internal clock buffer to the ADC serial port (see Figure 3 on page
10).
5.4 CS8406 CONTROL (ADDRESS 04H)
5.4.1 RESET (RST)
Default = 1
0 - CS8406 held in reset
1 - CS8406 taken out of reset
Function:
This bit is used to reset the CS8406 and is held low for 300
µs upon FPGA initialization.
5.4.2 DATA MUX(MUX)
Default = 100
ADC.CLK_
MUX[1:0]
Clock Selection
00 CS8416
01 DAC
10 DSP ADC
11 TDMer
Table 6. Clocks to ADC
7 6 5 4 3 2 1 0
Reserved RST MUX2 MUX1 MUX0 128/256 Fs I²S/LJ T2P/ADC
MUX[2:0] Data Selection
000 ADC_SDOUT
001 ADC_SDOUT2
010 ADC_SDOUT3
011 ADC_SDOUT1
Table 7. Data to CS8406