Serial Port Receive Registers - Cirrus Logic CS42L42 Manual

7.21.6 ASP Transmit Hi-Z and Delay Configuration
R/W
7
—
Default
0
Bits Name
7:6 — Reserved
5:4 ASP_TX_ ASP transmit drive to Hi-Z. SDA value for unselected bits.
DRV_Z 00 (Default) Hi-Z
3:2 ASP_TX_HIZ_ ASP transmit drive to Hi-Z delay. Nominal additional delay to release of bit drive to Hi-Z from sample edge.
DLY 00 (Default) 0 ns
1:0 — Reserved
7.21.7 ASP Transmit Channel 2 Bit Start MSB
R/W
7
Default 0
Bits Name
7:1 — Reserved
0 ASP_TX_BIT_ ASP transmit Channel 2 bit start MSB. Configures the MSB location of the channel with respect to SOF (LRCK edge +
CH2_ST_MSB phase lag).
7.21.8 ASP Transmit Channel 2 Bit Start LSB
R/W
7
Default
0
Bits Name
7:0 ASP_TX_BIT_ ASP transmit Channel 2 bit start LSB. Configures the LSB location of the channel with respect to SOF (LRCK edge +
CH2_ST_LSB phase lag).

7.22 Serial Port Receive Registers

7.22.1 ASP Receive Enable
R/W
7
ASP_RX1_CH_EN
Default
0
Bits Name
7:6 ASP_ ASP receive DAI1 enable. Determines whether the channel buffer receives data. ASP_RX1_CH_EN[0] = Channel 1 and ASP_
RX1_ RX1_CH_EN[1] = Channel 2
CH_EN
Note: Enabling is needed only when using S/PDIF in 2Fs Mode and playback in Fs Mode.
0 (Default) The corresponding channel buffer is disabled.
1 The corresponding channel buffer receives data.
5:2 ASP_ ASP receive DAI0 enable. Determines whether the channel buffer gets populated.
RX0_
ASP_RX0_CH_EN[0] = Channel 1
CH_EN
ASP_RX0_CH_EN[1] = Channel 2
0 (Default) The corresponding channel buffer does not get populated.
1 The corresponding channel buffer is populated
1 ASP_ ASP receive DAI1 double-rate mode.
RX1_
0 (Default) Standard sample rate, Fs (not doubled)
2FS
1 Sample rate is doubled, 2 Fs
0 ASP_ ASP receive DAI0 double-rate mode.
RX0_
0 (Default) Standard sample rate, Fs (not doubled)
2FS
1 Sample rate is doubled, 2 Fs
DS1083F2
6 5
ASP_TX_DRV_Z
0 0
01 Reserved
01 ~8 ns
6 5
—
0 0
6 5
0 0
6 5
0 0
4 3
ASP_TX_HIZ_DLY
0 0
Description
10 Low
10 ~16 ns
4 3
0 0
Description
4 3
ASP_TX_CH2_BIT_ST_LSB
0 0
Description
4 3
ASP_RX0_CH_EN
0 0
Description
ASP_RX0_CH_EN[2] = Channel 3
ASP_RX0_CH_EN[3] = Channel 4
7.22 Serial Port Receive Registers
2 1
0 0
11 High
11 Reserved
2 1
ASP_TX_CH2_BIT_ST_MSB
0 0
2 1
0 0
2 1
ASP_RX1_2FS ASP_RX0_2FS
0 0
CS42L42
Address 0x2906
0
—
0
Address 0x290A
0
0
Address 0x290B
0
0
Address 0x2A01
0
0
164