CS4294SLASHCS4298 datasheet(41/66 Pages) CIRRUS

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CS4202

DS549PP2

4.28

Vendor ID1 Register (Index 7Ch)

F[7:0]

First Character of Vendor ID. With a value of F[7:0] = 43h, these bits define the ASCII ‘C’ char-

acter.

S[7:0]

Second Character of Vendor ID. With a value of S[7:0] = 52h, these bits define the ASCII ‘R’

character.

Default

4352h. This register contains read-only data.

4.29

Vendor ID2 Register (Index 7Eh)

T[7:0]

Third Character of Vendor ID. With a value of T[7:0] = 59h, these bits define the ASCII ‘Y’

character.

DID[2:0]

Device ID. With a value of DID[2:0] = 111, these bits specify the audio codec is a CS4202.

REV[2:0]

Revision. With a value of REV[2:0] = 001, these bits specify the audio codec revision is ‘A’.

Default

597xh. This register contains read-only data.

The two Vendor ID registers provide a means to determine the manufacturer of the AC ’97 audio codec. The first

three bytes of the Vendor ID registers contain the ASCII code for the first three letters of Crystal (CRY). The final

byte of the Vendor ID registers is divided into a Device ID field and a Revision field. Table 13 lists the currently de-

fined Device ID’s.

D15

D14

D13

D12

D11

D10

D15

D14

D13

D12

D11

D10

DID2

DID1

DID0

REV2 REV1 REV0

DID2 - DID0

Part Name

000

CS4297

001

CS4297A

010

CS4294/CS4298

011

CS4299

100

CS4201

101

CS4205

110

CS4291

111

CS4202

Table 13. Device ID with Corresponding Part Number

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