ML22Q533 datasheet(112/178 Pages) ROHM

112 / 178 page

FEDL22Q53X-02

ML22Q53X

 FADE command

・ Command

1st byte

FCON2

FCON1

FCON0

FADE

2nd byte

The FADE command sets the Fade function. This command can be input regardless of the NCR signal status.

By using the fade function, the volume changes stepwise when the volume is changed by the CVOL command or the PAN

command.

FADE

Description

Fade function disabled (initial value)

Fade function enabled

FCON2 to FCON0 set the volume that changes at every unit-time (sampling group period

*1) when the volume is changed to

the volume set by the CVOL command or the PAN command.

FCON2

FCON1

FCON0

Description

Volume change in 0 dB × 128/32768 steps

Volume change in 0 dB × 64/32768 steps

Volume change in 0 dB × 32/32768 steps

Volume change in 0 dB × 16/32768 steps

Volume change in 0 dB × 8/32768 steps

Volume change in 0 dB × 4/32768 steps

Volume change in 0 dB × 2/32768 steps

Volume change in 0 dB × 1/32768 steps

The smaller the voltage step that changes for each sampling frequency group, the less the pop noise, but the longer the

transition time until the set volume is reached. The transition time is expressed by the following equation.

Volume-transition time for CVOL command

=|[Current CVOL setting]-[New CVOL setting]|

× [Sampling-frequency group

*1]

× {264 ÷ (256 ÷ 2^[FCON2-FCON0 setting])}

*1 Sampling frequency group

At 10.7/21.3kHz:

23.44

μs

At 6.4/12.8/25.6kHz:

39.06μs

At 8.0/16.0/32.0kHz:

31.25μs

At 11.025/22.05/44.1kHz:

22.68μs

At 12.0/24.0/48.0kHz:

20.83μs

*2 Rounding up after the decimal point

For the timing of the FADE command, refer to the "FADE command timing" in the timing chart.

112/178

ML22Q533 Datasheet(PDF) 112 Page - Rohm

ML22Q533 Datasheet(HTML) 112 Page - Rohm

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL