User guide

DS578F3 47

CS8416

each mode, every start-up option select pin (except for TX, which has an internal pull-down) MUST have an

external pull-up or pull-down resistor as there are no internal pull-up or pull-down resistors for these startup

conditions (set after reset).

15.3 Hardware Mode Equivalent Register Settings

Listed below are the equivalent values that the registers are set to in Hardware Mode.

Control0 Register (00h)

FSWCLK

= 0

PDUR = Set by TX pin pull-up/down after reset.

TRUNC = 0

Control1 Register (01h)

SWCLK

= Set to 1 if there a transition on OMCK after reset. Otherwise set to 0.

MUTSAO = 0

INT[1:0] = N/A.

HOLD[1:0] = 00

RMCKF = Set by U pin pull-up/down after reset.

CHS = 0

Control2 Register (02h)

DETCI

= N/A

EMPH_CNTL[2] = set by 96KHZ pull-up/down after reset. See Figure 14 for the de-emphasis filter re-

sponse.

EMPH_CNTL[1:0] = 00

GPO0SEL[3:0] = N/A

Control3 Register (03h)

GPO1SEL[3:0]

= N/A

GPO2SEL[3:0] = N/A

Pin Name Pull Down to DGND Function Pull Up to VL Function

SDOUT Hardware Mode Software Mode

RCBL Serial Port Slave Mode Serial Port Master Mode

AUDIO Serial Format Select 1 (SFSEL1)=0 Serial Format Select 1 (SFSEL1)=1

C Serial Format Select 0 (SFSEL0)=0 Serial Format Select 0 (SFSEL0)=1

RMCK Frequency=256*F

RMCK Frequency=128*F

TX Normal Phase Detector update rate. Higher Phase Detector update rate.

96KHZ Emphasis Audio Match Off Emphasis Audio Match On

NV/RERR NVERR Selected RERR Selected

Table 4. Hardware Mode Start-Up Pin Conditions