1.4.3 Dem-Pcm1681 Daughtercard Configuration Controls; Electrostatic Discharge Warning; Hdr001: Signal Path Selection For Pin 1 Of Pcm1681; Hdr002: Mode Control Selection Of Pcm1681 - Texas Instruments PCM1681 User Manual

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1.4.3 DEM-PCM1681 Daughtercard Configuration Controls

This section discusses the headers that are provided as configuration controls for the PCM1681
daughtercard.
1.4.3.1 HDR001: Select Signal Path for Pin 1 of PCM1681
Either 1-2 or 3-2 must be shorted according to the function of pin 1 of the PCM1681, which is determined
by the HDR002 setting.
1-2
Short
Open
1.4.3.2 HDR002: Select Mode Control of PCM1681
Either 1-2, 3-4, 5-6, or 7-8 must be shorted in order to select mode control type and oversampling
condition of the PCM1681.
1-2
Short
Open
Open
Open
1.5

Electrostatic Discharge Warning

Many of the components on the DEM-DAI1681 are susceptible to damage by electrostatic discharge
(ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling
the EVM, including the use of a grounded wrist strap at an approved ESD workstation.
Failure to observe ESD handling procedures may result in damage to EVM
components.
SBAU137 – April 2008
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Table 1-4 summarizes the select signal path configuration for HDR002.
Table 1-4. HDR001: Signal Path Selection for Pin 1 of PCM1681
HDR001
3-2
Open
Short
Table 1-5 summarizes the mode control selection configuration for HDR002.
Table 1-5. HDR002: Mode Control Selection of PCM1681
HDR002
3-4 5-6
Open Open
Short Open
Open Short
Open Open
Signal Path for Pin 1 of PCM1681
Path for ZR1 output for S/W (SPI and I
Path for FMT0 input for H/W Control Mode
7-8
2
Open S/W (I C) Control Mode
Open H/W Control Mode with Narrow Band Operation
Open H/W Control Mode with Wide Band Operation
Short S/W (SPI) Control Mode
CAUTION
Electrostatic Discharge Warning
2
C) Control Mode
Mode Control of PCM1681
Description
13