WM8281ECSSLASHR datasheet(134/392 Pages) CIRRUS

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WM8281

134

Rev 4.0

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R4640

(1220h)

R4645

(1225h)

15:0

DSP2_START_A

DDRESS_RDMA

_BUFFER_n

[15:0]

0000h

DSP2 RDMA Channel n Start Address

Bit [15] = Memory select

0 = X Data memory

1 = Y Data memory

Bits [14:0] = Address select

The address is defined relative to the base

address of the applicable data memory.

The LSB represents one 24-bit DSP

memory word.

Note that the start address is also

controlled by the respective

DSP2_RDMA_CHANNEL_OFFSET bit.

R4656

(1230h)

DSP2

WDMA

Config 1

13:0

DSP2_WDMA_B

UFFER_LENGTH

[13:0]

0000h

DSP2 DMA Buffer Length

Selects the amount of data transferred in

each WDMA channel. The LSB represents

one 24-bit DSP memory word.

R4657

(1231h)

DSP2

WDMA

Config 2

7:0

DSP2_WDMA_C

HANNEL_ENABL

E [7:0]

00h

DSP2 WDMA Channel Enable

There are 8 WDMA channels; each bit of

this field enables the respective WDMA

channel.

Each bit is coded as:

0 = Disabled

1 = Enabled

R4658

(1232h)

DSP2

WDMA

Offset 1

7:0

DSP2_WDMA_C

HANNEL_OFFSE

T [7:0]

00h

DSP2 WDMA Channel Offset

There are 8 WDMA channels; each bit of

this field offsets the Start Address of the

respective WDMA channel.

Each bit is coded as:

0 = No offset

1 = Offset by 8000h

R4660

(1234h)

DSP2

RDMA

Config 1

5:0

DSP2_RDMA_C

HANNEL_ENABL

E [5:0]

00h

DSP2 RDMA Channel Enable

There are 6 RDMA channels; each bit of

this field enables the respective RDMA

channel.

Each bit is coded as:

0 = Disabled

1 = Enabled

R4661

(1235h)

DSP2

RDMA

Offset 1

5:0

DSP2_RDMA_C

HANNEL_OFFSE

T [5:0]

00h

DSP2 RDMA Channel Offset

There are 6 RDMA channels; each bit of

this field offsets the Start Address of the

respective RDMA channel.

Each bit is coded as:

0 = No offset

1 = Offset by 8000h

R4869

(1305h)

DSP3

Status 2

DSP3_PING_FU

DSP3 WDMA Ping Buffer Status

0 = Not Full

1 = Full

DSP3_PONG_FU

DSP3 WDMA Pong Buffer Status

0 = Not Full

1 = Full

WM8281ECS/R Scheda tecnica(PDF) 134 Page - Cirrus Logic

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