AK2301A データシートの表示（PDF） - Asahi Kasei Microdevices

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AK2301A

3.3V Single channel PCM CODEC LSI

Asahi Kasei Microdevices 

ASAHI KASEI

AK2301A

- Frame sync signal （FS）

8kHz reference signal. This signal indicated the timing and the frame position of 8kHz PCM interface.

All the internal clock of the LSI is generated based on this FS signal.

-Bit clock （BCLK）

BCLK defines the PCM data rate. BCLK rate is 256kHz or 512kHz. This clock must be synchronized

with FS.

Long Frame

FS

BCLK

DX

1 2 3 4 5 6 7 8 9 10 11 12 13 14 L L

DR

Don't

care

1

2

3

4

5

6

7

8

9 10 11 12 13 14

Don't care

Short Frame

FS

BCLK

DX

1 2 3 4 5 6 7 8 9 10 11 12 13 14 L L

DR Don't care 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Don't care

Important notice!

Please don’t stop feeding FS and BCLK.

Both FS and BCLK is used as the internal reference clock. LSI does not work when the FS and BCLK are not

provided.

<MS0300-E-00>

15

2004/3

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