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UPD9930 Datasheet(PDF) 23 Page - NEC

Part # UPD9930
Description  LINEAR CODEC FOR DIGITAL CELLULAR TELEPHONE
PDF  78 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD9930 Datasheet(HTML) 23 Page - NEC

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µPD9930
23
DAI
DAI
DCLK
DO
DI
TC1
TC2
DRSTB
FSYNC
MCLK
MSTR
MDAT
SCLK
SEN
SO
SI
REQB
8 kHz
DSP
(SP-CODEC)
Microcontroller
Test command
25-Pin DSUB socket
System simulator
Mobile equipment
PD9930
µ
TC1 (ITC1)
TC2 (ITC2)
DRSTB
Figure 2-14 Latch Timing of TC1, TC2 (or ITC1, ITC2)
Figure 2-15 Example of System Configuration at Time of DAI Test Mode
Remark In the acoustic device test mode, REQB is ignored (both high and low levels). When DSPSEL = VDD (mode
1), SCLK and SEN are fixed to low, and when DSPSEL = GND (mode 2), fixed to high.



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