For further details concerning filter characteristics when de-emphasis is on, refer to page 13.

— De-emphasis on/off

De-emphasis on: EMP pin = “H”

De-emphasis off: EMP pin = “L”

— Selection of filter coefficient

• Soft Mute

Soft muting is performed using the built-in digital attenuator. The attenuation amount of the attenuator circuit is as

follows:

20 log (ATT/256) dB

Although ATT = 0 to 256, when ATT = 0, attenuation sets to –

∞. If the MUTE pin is set to “H” level, ATT

approaches 0 in single-decreasing increments and the attenuation changes towards –

∞. On the other hand, when

the MUTE pin is set to the “L” level, ATT approaches 256 in single-increasing increments and the attenuation

amount changes to approach 0. The approximate speed during soft mute is 1024/fs.

• Noise Shaper

In order to reduce noise during DF arithmetic output requantization, the first-order noise shaper is utilized.

• Double-Rate Support

When the D/N pin is set to “H” level, CD high-speed playback is supported. At this time, BCLK, LRCK and

DATA are input at double the frequency of normal operating times. The system clock operates at 384 fs and with

a clock speed of 512 fs, double-rate is supported. Note that test mode is enabled for clock speeds of 392 fs and

448fs and double-rate is not supported.

Normal-rate mode: D/N pin = “L”

Double-rate mode: D/N pin = “H”

No. 4624-7/14

LC78835K, 78835KM

FS1

L

H

H

L

FS2

L

L

H

H

fs

44.1 kHz

32 kHz 48 kHz