AD1812JS datasheet(8/20 Pages) AD

8 / 20 page

AD1812

REV. 0

–8–

Table III. Codec Transfer 8-Bit Interface (P/CINF8 = 1)*

Format

Byte 3

Byte 2

Byte 1

Byte 0

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

Mono, 16-Bit

Upper 8 Bits of

Lower 8 Bits of

Upper 8 Bits of

Lower 8 Bits of

Sample 1

Sample 0

Little Endian

Left Channel

Stereo, 16-Bit

Upper 8 Bits of

Lower 8 Bits of

Upper 8 Bits of

Lower 8 Bits of

Sample 0

Little Endian

Right Channel

Left Channel

Mono, 8-Bit

Sample 3, 8 Bits

Sample 2, 8 Bits

Sample 1, 8 Bits

Sample 0, 8 Bits

Linear PCM

-Law PCM

Left Channel

A-Law PCM

Stereo, 8-Bit

Sample 1, 8 Bits

Sample 0, 8 Bits

Linear PCM

-Law PCM

Right Channel

Left Channel

Right Channel

Left Channel

A-Law PCM

Mono, 4-Bit

Sample 7,

Sample 6,

Sample 5,

Sample 4,

Sample 3,

Sample 2,

Sample 1,

Sample 0,

4 Bits

IMA-ADPCM

Left

Channel

Stereo, 4-Bit

Sample 3,

Sample 2,

Sample 1,

Sample 0,

4 Bits

IMA-ADPCM

Right

Left

Right

Left

Right

Left

Right

Left

Channel

Mono, 16-Bit

Lower 8 Bits of

Upper 8 Bits of

Lower 8 Bits of

Upper 8 Bits of

Sample 1

Sample 0

Big Endian

Left Channel

Stereo, 16-Bit

Lower 8 Bits of

Upper 8 Bits of

Lower 8 Bits of

Upper 8 Bits of

Sample 0

Big Endian

Right Channel

Left Channel

*Regardless of the data format used, the AD1812’s codec always transfers 32 bits of data (two 16-bit words).

IOR/IOW

tBWDN

BYTE 0

DATA

(7:0)

BYTE 1

BYTE 2

BYTE 3

LEFT

SAMPLE

RIGHT

SAMPLE

Figure 7. Codec Transfers 8-Bit Interface

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