Cirrus Logic CS4202 - Manual (Page 41)

CS4202
DS549PP2 41
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 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
F7 F6 F5 F4 F3 F2 F1 F0 S7 S6 S5 S4 S3 S2 S1 S0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
T7 T6 T5 T4 T3 T2 T1 T0 0 DID2 DID1 DID0 0 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