Digital Interface; Jumper Setting; Pinout For Serial Control Connector P2 - Texas Instruments ADS8372EVM User Manual

Digital Interface

Reference
Designator
SJP1 Buffer onboard reference (REF1004-2.5)
Buffer user supplied reference voltage applied at P1 pin 20.
SJP2 Connect external reference directly to SJP4
Connect buffered external reference to SJP4
SJP3 Connect U3 negative supply to ground
Connect U3 negative supply to –VCC
SJP4 Connect internal reference to REFIN
Connect external reference to REFIN
SJP5 Connect common-mode voltage to VOCM pin of THS4131
W1 Connect +5VD to BVDD
Connect +3.3VD to BVDD
W3 Set power down signal (PD) high
W4 Set frame sync signal (FS) high
W5 Set chip select signal (CS) low
(1)
Factory Installed
3 Digital Interface
The ADS8372EVM is designed for easy interfacing to multiple platforms. Samtec plug and socket
connectors provide a convenient dual row header/socket combination at P1 and P2 to plug into prototype
boards or ribbon cable over to user system boards.
The digital input and output signals for the converter is available at connector P2 on the ADS8372EVM,
see Table 3 for the connector pinout.
Description
Chip Select
Serial Clock
Reserved
Frame Sync
Reserved
Reserved
Serial Data Out
BUSY
Convert Start
Power down
4 ADS8372EVM
Table 2. Jumper Setting
Description
Table 3. Pinout for Serial Control Connector P2
Signal Name Connector Pin
CS P2.1
SCLK P2.3
N/A P2.5
FS P2.7
N/A P2.9
N/A P2.11
SDO P2.13
BUSY P2.15
CONVST P2.17
PD P2.19
Signal Name Description
P2.2 N/A Reserved
P2.4 DGND Ground
P2.6 N/A Reserved
P2.8 N/A Reserved
P2.10 N/A Reserved
P2.12 N/A Reserved
P2.14 N/A Reserved
P2.16 N/A Reserved
P2.18 DGND Ground
P2.20 N/A Reserved
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Pins/Pads
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SLAU160 – July 2005