CS4299 datasheet(32/52 Pages) CIRRUS

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CS4299

4.21

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’

character.

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.

4.22

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] = 011, these bits specify the audio codec is a CS4299.

REV[2:0]

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

Default

593xh. 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 9 lists the currently defined

Device ID’s. Table 10 lists the current revisions of the CS4299.

D15

D14

D13

D12

D11

D10

D15

D14

D13

D12

D11

D10

DID2

DID1

DID0

REV2 REV1 REV0

DID[2:0]

Part Name

000

CS4297

001

CS4297A

010

CS4294/CS4298

011

CS4299

100

CS4201

101

CS4205

Table 9. Device ID with Corresponding Part Number

REV[2:0]

Revision

001

010

011

100

D, E, F, G, H

101

110

Table 10. Revision Values

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