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UPD9930 Datasheet(PDF) 52 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) 52 Page - NEC

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µPD9930
52
Register address
TSTCR
D7
D6
D5
D4
D3
D2
D1
D0
1
1
0
TCMODE
TCMODE
0
DAI test mode control method selection
Specification of test mode by external terminals TC1 and TC2
ITC2
ITC1
LOOPBK
SIOOFF
1
Specification of test mode by test control registers ITC1 and ITC2
ITC2
0
DAI test mode specification
Normal operation
0
Speech encoder test mode
LOOPBK
0
Analog loopback specification
Normal operation
1
Analog loopback
SIOOFF
0
DSP interface input/output terminal control
Normal operation
1
Setting of terminals SO, SI, SCLK, and SEN to low level
1
1
ITC1
0
1
0
1
Remarks
At reset
Remarks
At reset
Speech decoder test mode
Acoustic device, A/D, D/A test mode
Remarks
At reset
Remarks
At reset
4.4.1 Test Control Register (TSTCR)
This is a 5-bit control register for selecting the test mode.
ITC1, ITC2 become valid at the rising edge of DRSTB. For the precautions when using DAI, refer to 2.1.9
DAI (Digital Audio Interface).
Figure 4-14 Test Control Register
Remark The analog loopback mode and the DAI test mode cannot be specified at the same time.



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