Cirrus Logic CS8416 - Manual (Page 39)

DS578F3 39
CS8416
14.5 Control3 (03h)
GPO1SEL[3:0] – GPO1 Source select. See “General Purpose Outputs” on page 29 .
Default = ‘0000’
GPO2SEL[3:0] – GPO2 Source select. See “General Purpose Outputs” on page 29 .
Default = ‘0000’
14.6 Control4 (04h)
RUN - Controls the internal clocks, allowing the CS8416 to be placed in a “powered down”, low current con-
sumption state.
Default = ‘0’
0 - Internal clocks are stopped. Internal state machines are reset. The fully static control port is
operational, allowing registers to be read or changed. Power consumption is low.
1 - Normal part operation. This bit must be written to the 1 state to allow the CS8416 to begin operation. All
input clocks should be stable in frequency and phase when RUN is set to 1.
RXD – RMCK Control
Default = ‘0’
0 -RMCK is an output, Clock is derived from input frame rate.
1 – RMCK becomes high impedance. The output of OSCLK, OLRCK, and SDOUT are indeterminate.
RX_SEL[2:0] – Selects RXP0 to RXP7 for input to the receiver
Default =’000’
000 – RXP0
001 – RXP1, etc
7 6 5 4 3 2 1 0
GPO1SEL3 GPO1SEL2 GPO1SEL1 GPO1SEL0 GPO2SEL3 GPO2SEL2 GPO2SEL1 GPO2SEL0
7 6 5 4 3 2 1 0
RUN RXD RXSEL2 RXSEL1 RXSEL0 TXSEL2 TXSEL1 TXSEL0
Figure 14. De-Emphasis Filter Response
F2 F1
-10
3.183
Frequency,
KHz
T1 =
50us
0
10.61
Gain,
dB
T2
=15us