CS4382 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CS4382' PDF : 42 Pages View PDF
CS4382
Selects the appropriate digital filter to maintain the standard 15 ms/50 ms digital de-emphasis filter re-
sponse at 32, 44.1 or 48 kHz sample rates. (see Figure 39)
De-emphasis is only available in Single-Speed Mode.
4.4.3
Soft Ramp-Down Before Filter Mode Change (RMP_DN)
Default = 0
0 - Disabled
1 - Enabled
Function:
A mute will be performed prior to executing a filter mode change. When this feature is enabled, this mute
is effected, similar to attenuation changes, by the Soft and Zero Cross bits in the Mode Control 3 register.
When disabled, an immediate mute is performed prior to executing a filter mode change.
Note: For best results, it is recommended that this feature be used in conjunction with the RMP_UP bit.
4.5 Invert Control (Address 05h)
7
INV_B4
0
6
INV_A4
0
5
INV_B3
0
4
INV_A3
0
3
INV_B2
0
2
INV_A2
0
1
INV_B1
0
0
INV_A1
0
4.5.1
Invert Signal Polarity (INV_XX)
Default = 0
0 - Disabled
1 - Enabled
Function:
When enabled, these bits will invert the signal polarity of their respective channels.
4.6 Mixing Control Pair 1 (Channels A1 & B1)(Address 06h)
Mixing Control Pair 2 (Channels A2 & B2)(Address 09h)
Mixing Control Pair 3 (Channels A3 & B3)(Address 0Ch)
Mixing Control Pair 4 (Channels A4 & B4)(Address 0Fh)
7
Px_A=B
0
6
PxATAPI4
0
5
PxATAPI3
1
4
PxATAPI2
0
3
PxATAPI1
0
2
PxATAPI0
1
1
PxFM1
0
0
PxFM0
0
4.6.1
Channel A Volume = Channel B Volume (A=B)
Default = 0
0 - Disabled
1 - Enabled
Function:
The AOUTAx and AOUTBx volume levels are independently controlled by the A and the B Channel Vol-
ume Control Bytes when this function is disabled. The volume on both AOUTAx and AOUTBx are deter-
mined by the A Channel Attenuation and Volume Control Bytes (per A-B pair), and the B Channel Bytes
are ignored when this function is enabled.
DS514F2
21
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