UDA1341TS Просмотр технического описания (PDF) - NXP Semiconductors.

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UDA1341TS

Economy audio CODEC for MiniDisc (MD) home stereo and portable applications

NXP Semiconductors. 

NXP Semiconductors

Economy audio CODEC for MiniDisc (MD)

home stereo and portable applications

Product specification

UDA1341TS

7.21.4 DATA1 CONTROL

Table 33 Data transfer of type ‘DATA1’

BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0

PL5 PL4 PL3 PL2 PL1 PL0 peak level value (6 bits)

READ-OUT DATA

7.21.4.1 Peak level value

A 6-bit value to indicate the peak level value of the playback data. The largest value of the left and right channel data in

the playback signal path is held since the last read-out of the microcontroller.

Table 34 Peak level read-out data

PL5

PL4

PL3

PL2

PL1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

0

0

1

0

0

0

1

0

0

0

0

1

0

0

0

0

1

1

0

0

0

1

1

:

:

:

:

:

0

1

0

0

1

0

1

0

1

0

:

:

:

:

:

1

1

1

1

0

1

1

1

1

1

1

1

1

1

1

Notes

1. Peak value (dB) = (Peak level − 63.5) × 5 × log 2.

2.

For

peak

data

>010011,

the

error

in

the

peak

value

is

<

-1---1-----×----l--o---g------2--

4

3. For peak data <010100, the error is larger due to limited bit length.

PEAK

PL0

VALUE(1)

(dB)

0

−∞

1

n.a.

0

n.a.

1

−90.31

0

n.a.

1

n.a.

0

n.a.

1

−84.29

:

:

1

note 2

0

note 3

:

:

1

−2.87

0

−1.48

1

0.00

2002 May 16

21

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