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UPD6376 Datasheet(Fiches technique) 7 Page - NEC

Numéro de pièce UPD6376
Description  AUDIO 2-CHANNEL 16-BIT D/A CONVERTER
Télécharger  20 Pages
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Fabricant  NEC [NEC]
Site Internet  http://www.nec.com/
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UPD6376 Datasheet(HTML) 7 Page - NEC

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µPD6376
7
2.2 Supplying Clock to CLK only during Sample Data Interval
The analog outputs of the L.OUT and R.OUT pins are updated after the input of 4.5 clocks following data input.
(See 4. ELECTRICAL CHARACTERISTICS, Timing Charts 1 and 2.)
2.2.1 Inputting serial data (Pin 1 Low or Open)
Place the LRCK reverse timing between the falling edge of CLK at LSB input completion (Point A in Figure 2-3)
and the next MSB input start time (Point B in Figure 2-3) (so as to include Points A and B).
Figure 2-3 Timing Chart of Serial Data Input
A
AB
B
1-sample data interval
LRCK reverse interval
LRCK reverse interval
LSB
CLK
SI
LRCK
16
12
34
12
34
5
6789 10 11 12 13 14 15 16
MSB
LSB
MSB
2.2.2 Inputting parallel data (Pin 1 High)
Place the WDCK falling edge timing between the falling edge of CLK at LSB input completion (Point A in Figure
2-4) and the next MSB input start time (Point B in Figure 2-4) (so as to include Points A and B).
Place the WDCK rising edge timing between the third falling edge of CLK from MSB input completion (Point C in
Figure 2-4) and the falling edge of CLK upon LSB input start (Point D in Figure 2-4) (so as to include Points C and
D).
Figure 2-4 Timing Chart of Parallel Data Input
A
AB
BC
D
WDCK falling
edge interval
WDCK falling
edge interval
WDCK rising edge interval
LSB
CLK
LSI
RSI
WDCK
16
12
34
12
5
6789 10 11 12 13 14 15 16
MSB
LSB
MSB
LSB
16
12
34
12
5
6789 10 11 12 13 14 15 16
MSB
LSB
MSB


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