Cirrus-logic CS4392 Manuel d'utilisateur télécharger pdf (Page 24)

CS4392

24 DS459PP3

6.6.2 Soft Volume Ramp-up after Reset (Bit 3)

Function:

This function allows the user to control whether a soft ramp up in volume is applied when reset is re-

leased either by the reset pin or internal to the chip. The modes are as follows:

0 - An instantaneous change is made from max attenuation to the control port volume setting on re-

lease of reset (default setting).

1 - Volume is ramped up using the soft-ramp settings in Bits 6:5 of register 02h (see 6.2.2) from max

attenuation to the control port volume setting on release of reset.

6.6.3 Soft Ramp-down before Reset (Bit 2)

Function:

This function allows the user to control if a soft ramp-down in volume is applied before a known reset

condition. The modes are as follows:

0 - An instantaneous change is made from the control port volume setting to max attenuation when

chip resets (default setting).

1 - Volume is ramped down using the soft-ramp settings in Bits 6:5 of register 02h (see 6.2.2) from

the control port volume setting to max attenuation when chip resets.

6.7 Chip ID - Register 07h

Function:

This register is Read-Only. Bits 7 through 4 are the part number ID which is 1000b (8h) and the re-

maining Bits (3 through 0) are for the chip revision.

B7 B6 B5 B4 B3 B2 B1 B0

PART3 PART2 PART1 PART0 REV3 REV2 REV1 REV0

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 39 40

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Cirrus-logic CS4392 Manuel d'utilisateur Page 24