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UPD9930 데이터시트(PDF) 39 Page - Renesas Technology Corp

부품명 UPD9930
상세설명  MOS INTEGRATED CIRCUIT
PDF  80 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

UPD9930 데이터시트(HTML) 39 Page - Renesas Technology Corp

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µPD9930
37
Register address
01
10
TXACT
TNACT
SOACT
SIACT
DSPCR
TXACT
1 = ON
Note
TNACT
1 = ON
Digital signal processor
BPF
LPF
Tone
generator
DSP I/F
SOACT
1
0
DGND
DGND
SIACT
0
1
SO
SI
A/D
D/A
4.2 DIGITAL INPUT/OUTPUT CONTROL
An outline of digital input/output control is shown in Figure 4-5.
The
µPD9930 can control input and output of the digital signal processor as follows.
Digital input/output control
Registers used
Voice send data BPF operation processing execution/stop
Connection and disconnection to tone output Voice send/
Digital signal processing control register
receive system
(DSPCR)
Serial output terminal (SO) control
Serial input terminal (SI) control
Caution You must not connect nor disconnect tone output voice send/receive system in the tone operation.
It causes malfunction.
Figure 4-5 Digital Input/Output Control
Note Connected when TXACT = 0 and TNACT = 1.



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