PCM Interface

Address

Register Name

Register Write

Register Read

Default

Description

0x40001000

PCM0_CFG

(25) TX_ACK_SEL

(25) TX_ACK_SEL

0x0

Select which TX word acknowleges the TX request

(24) RX_ACK_SEL

(24) RX_ACK_SEL

0x0

Select which RX word acknowleges the RX request

(23) TX_DMA_ENABLE

(23) TX_DMA_ENABLE

0x0

Enable/disable the TX DMA request

(22) RX_DMA_ENABLE

(22) RX_DMA_ENABLE

0x0

Enable/disable the RX DMA request

(21) TX_IOC_ENABLE

(21) TX_IOC_ENABLE

0x0

Enable/disable the TX IOC request

(20) RX_IOC_ENABLE

(20) RX_IOC_ENABLE

0x0

Enable/disable the RX IOC request

(19) RX_TX_INT_ENABLE

(19) RX_TX_INT_ENABLE

0x0

Enable/disable the RX_TX interrupt

(17) OVERRUN_INT_EN

(17) OVERRUN_INT_EN

0x0

Enable/disable the overrun interrupt

(16) UNDERRUN_INT_EN

(16) UNDERRUN_INT_EN

0x0

Enable/disable the underrun interrupt

(15) CLK_POLARITY

(15) CLK_POLARITY

0x0

Select the PCM clock polarity

(14) TX_DATA_ALIGN

(14) TX_DATA_ALIGN

0x0

Select the TX data alignment

(13) RX_DATA_ALIGN

(13) RX_DATA_ALIGN

0x0

Select the RX data alignment

(12:8) WORD_SIZE

(12:8) WORD_SIZE

0x8

Select the number of bits per PCM word

(7) BIT_ORDER

(7) BIT_ORDER

0x0

Select whether the data is transmitted starting with the MSB or LSB

(6) FRAME_ALIGN

(6) FRAME_ALIGN

0x0

Align the PCM frame signal to the first/last bit

(5) FRAME_WIDTH

(5) FRAME_WIDTH

0x0

Use a long/short PCM frame signal

(4:2) FRAME_LENGTH

(4:2) FRAME_LENGTH

0x0

Select the number of words per PCM frame

(1) SUBFRAME

(1) SUBFRAME

0x0

Enable the frame duration for each word

(0) SLAVE

(0) SLAVE

0x1

Use the PCM interface as a master/slave

0x40001004

PCM0_CTRL

-

(8) ENABLE_STATUS

0x0

PCM enable status

(2) RESET

-

N/A

Reset the PCM interface

(1) DISABLE

-

N/A

Disable the PCM interface

(0) ENABLE

-

N/A

Enable the PCM interface

0x40001008

PCM0_STATUS

-

(12) BUSY

0x0

Indicate that the reception or transmission of the data is ongoing

-

(11) TX_REQ

0x1

Indicate that TX data can be written

-

(10) RX_REQ

0x0

Indicate that RX data can be read

-

(9) OVERRUN

0x0

Indicate that an overrun occurred when receiving data

-

(8) UNDERRUN

0x0

Indicate that an underrun occurred when transmitting data

(1) OVERRUN_CLEAR

-

N/A

Clear the overrun status flag

(0) UNDERRUN_CLEAR

-

N/A

Clear the underrun status flag

0x40001010

PCM0_TX_DATA0

(31:0) TX_DATA0

(31:0) TX_DATA0

0x0

Data to transmit on channel 0

0x40001014

PCM0_TX_DATA1

(31:0) TX_DATA1

(31:0) TX_DATA1

0x0

Data to transmit on channel 1

0x40001018

PCM0_RX_DATA0

-

(31:0) RX_DATA0

0x0

Data received on channel 0

0x4000101C

PCM0_RX_DATA1

-

(31:0) RX_DATA1

0x0

Data received on channel 1

0x400010FC

PCM0_ID_NUM

-

(19:16) PCM_NUMBER

0x0

PCM Instance number

-

(15:8) PCM_MAJOR_REVISION

0x1

PCM Major Revision number

-

(7:0) PCM_MINOR_REVISION

0x0

PCM Minor Revision number