Texas Instruments TSC4270, Руководство пользователя

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TSC4270
36-Pin
Sensor Connector
DUT J2
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Hardware Overview
2.2 Digital Interface
The TSC4270 EVM is designed to easily interface with multiple control platforms. A convenient 24-pin
socket J2 (Samtec SSM-124-X-SV) is installed on the TSC4270EVM daughterboard, and provides an
interface to digital signals between the TSC4270 device and the Stellaris LM3S3748 microprocessor on
the TSC4270EVM motherboard.
Table 3. Pinout for Digital Interface P2
Pin Name Description
J2.1 DUT SCL I
2
C™ bus serial clock
J2.2 DUT SDA I
2
C bus serial data line
J2.3 to J2.6 Unused Unused
J2.7 DUT+1p8V +1.8 V power supply to the TSC4270 device
J2.8 GND Ground
J2.9 DUT+3p3V +3.3 V power supply to the TSC4270 device
J2.10 GND Ground
J2.11 St3p3V +3.3 V power supply to the Stellaris device
J2.12 Unused Unused
J2.13 DUT RST TSC4270 reset, active low
J2.14 DUT IRQ TSC4270 interrupt, active low
J2.15 to J2.20 Unused Unused
J2.21 DUT CS SPI™ bus chip selection, active low
J2.22 DUT MISO SPI bus master-in-slave-out data line
J2.23 DUT MOSI SPI bus master-out-slave-in data line
J2.24 DUT SCLK SPI bus sync clock
2.3 DUT and MCO Printed Circuit Boards (PCBs)
Figure 2. TSC4270 DUT Board, Top View
5 SBAU208 – April 2013 TSC4270 Evaluation Module
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