CS4294 datasheet(29/42 Pages) CIRRUS

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CS4294

DS326PP4

6.1.31 Vendor ID1 (Index 7Ch)

F[7:0]

First Character of Vendor ID.

43h - ASCII ‘C’ character.

S[7:0]

Second Character of Vendor ID.

52h - ASCII ‘R’ character.

Default

Read-only data 4352h.

6.1.32 Vendor ID2 (Index 7Eh)

T[7:0]

Third Character of Vendor ID.

59h - ASCII ‘Y’ character.

PID[3:0]

Part ID.

See Table 9 below.

RID[2:0]

Revision ID

Default

Read-only data 592Bh.

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

The first three bytes of the ID registers contain the ASCII code for the first 3 letters of Crystal (CRY).

The final byte of the Vendor ID2 register is divided into a Part ID field and a Revision field. Table 9

lists the Part ID’s defined to date.

D15

D14

D13

D12

D11

D10

D15

D14

D13

D12

D11

D10

PID2

PID1

PID0

RID2

RID1

RID0

PID3-PID0

Part Name

000

CS4297

001

CS4297A

010

CS4298

010

CS4294

011

CS4299

Table 9. Reg. 7Eh Defined Part ID’s

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