ML7055LP datasheet(14/30 Pages) OKI

14 / 30 page

FEDL7055-02

OKI Semiconductor

ML7055

14/30

PCM-CVSD Transcoder Block

• Application side I/O:

- PCM Codec

• Application-side format:

- PCM linear (8, 14, 16 bits/sample, 8 kHz sampling frequency)/A-law/

µ-law

• Bluetooth-side format:

- CVSD/A-law/

µ-law

• All combinations of the above conversions are supported

• PCMSYNC/PCMCLK I/O can be switched (initial setting: input)

• Timing in Short Mode and in PCMCLK and PCMSYNC Output Mode

(For PCM data of 14 bits/sample, lower 2 bits of 16 bits are invalid.)

• Timing in Short Mode and in PCMCLK and PCMSYNC Input Mode.

(For PCM data of 14 bits/sample, lower 2 bits of 16 bits are invalid.)

125

µs (8kHz)

PCMCLK(I)

64k/128kHz

PCMSYNC(I)

8 bits or 16 bits

PCMCLK(O)

64k/128kHz

PCMSYNC(O)

LSB

MSB

DATA

LSB

DATA

MSB

Data is output on the rising edge of CLK.

PCMOUT

LSB

MSB

DATA

LSB

DATA

MSB

PCMIN

Data is shifted in on the falling edge of CLK

125

µs (8kHz)

8 bits or 16 bits

LSB

MSB

DATA

LSB

DATA

MSB

Data is output on the rising edge of CLK.

PCMOUT

LSB

MSB

DATA

LSB

DATA

MSB

PCMIN

Data is shifted in on the falling edge of CLK

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