Eurotech Appliances PXA270 Temperature sensor

ZEUS Technical Manual	Detailed hardware description

Temperature sensor

There is a Philips LM75A temperature sensor on the ZEUS. The LM75A is a temperature-to-digital converter using an on-chip band-gap temperature sensor and sigma-delta A-to-D conversion technique. The device is also a thermal detector providing an over-temperature detection output (OVERTEMP signal on GPIO96 of PXA270). The accuracy of LM75A is ±2 °C (at -25 °C to 100 °C), and ±3 °C (at -55 °C to 125 °C). LM75A is connected to the I2C bus of PXA270 processor, and is accessible at I2C bus address 0x48.

Contents

Technical Manual ZEUS Technical Manual Contents Page Product handling and environmental compliance Anti-statichandling Packaging Electromagnetic compatibility (EMC) RoHS compliance Introduction ZEUS-M64-F32-003-R6 ZEUS-M128-F32-004-I-R6 ZEUS-Mx-Fy-zzz-R6 ZEUS-Mx-Fy-zzz-I-R6 The ZEUS board is fully RoHS-6compliant Eurotech Sales ZEUS ‘at a glance’ 10-30Vinput option 5V input option ZEUS features Date/time support Audio and touchscreen I2C bus Configuration EPROM Watchdog timer Mechanical Environmental ZEUS support products About this manual Conventions Tables Byte lane Getting started Using the ZEUS Using the CompactFlash socket Using the serial interfaces (RS232/422/485) Using the audio features Using the Ethernet interface Using the PC/104 expansion bus Using the ZEUS Modem Modules Using the ZigBee Module Detailed hardware description ZEUS block diagram ZEUS address map UART and CPLD address map PXA270 processor Page PXA270 GPIO pin assignments Page Page source See section… Page Page Interrupt assignments Internal interrupts External interrupts On-BoardGPIO expanders pin assignments Expander 2 - I2C Address Real time clock Watchdog timer Watchdog Register [REG3] Memory Flash memory SDRAM Static RAM Configuration EEPROM Wireless support Wireless modem and GPS receiver Page IEEE802.15.4 / ZigBee module (ZMx) Expansion interfaces CPLD ver/issue register [REG0] SDIO CompactFlash CF reset register [REG2] PC/104 interface PC/104 interrupt register [REG1] Unsupported PC/104 interface features Flat panel display TFT panel data bit mapping to the ZEUS Page LCD logic and backlight power LCD backlight brightness control STN bias voltage LVDS interface LVDS_FES# (EXP2_GPIO1) Selected LVDS function Audio Touchscreen controller USB Ethernet Serial COM ports COM1/2 – RS232 interface COM3 – RS232/RS485/RS422 interface COM4 – RS422/485 interface RS422 RS485 Typical RS422 and RS485 connection CAN bus Split Termination CAN Transceiver I²C bus Quick Capture camera interface External General purpose I/O Temperature sensor JTAG and debug access Power and power management Power supplies DC input voltage (10-30V) 5V only operation On-boardsupplies Power management IC Battery backup Processor power management Page Peripheral devices power management Device Part number Condition Power (mW) CompactFlash power management Wireless modem power management USB power management Page CAN bus power management Clock generator power management COM Ports power management Temperature sensor power management I/O expander power management Configuration PROM power management Connectors, LEDs and jumpers Page Connectors Page Page Page Page Page Page J11 – Serial port – COM1 J12 & J13 – PC/104 connectors J14 – LCD connector J15 – Serial port – COM2 J16 – LVDS connector J17 – CAN bus J18 – Serial port (RS485/422) – COM3 J19 – Serial ports – COM3/4 J20 – CompactFlash connector J21 – IEEE802.15.4 / ZigBee connector J22 – SDIO socket J23 – Wireless modem/GPS module interface J24 – Backlight power (for flat panel displays) Jumpers JP1 – User jumpers JP2 – Battery disconnect JP3 – LCD logic supply selection JP4 – LVDS MSL selection JP5 & JP6 – CAN bus termination JP5 JP6 JP7 - JTAG Enable Status LEDs Flash LED User LEDs Appendix A - Contacting Eurotech Eurotech sales Eurotech technical support Eurotech Group Appendix B - Specification Page Appendix C - Mechanical diagram Page Appendix D - Reference information Product information EPIC information PC/104 Consortium USB information Intel Marvell www.marvell.com Exar Corporation Wolfson Microelectronics Appendix E - Wireless modem datasheets Sony Ericsson GR64 Page Siemens MC39i Page Fastrax iTrax03/08 Page Motorola iO270 Page Telit GE863-GPS Page Sierra Wireless MC8775 Page Sierra Wireless MC5720 Page Appendix F - ZEUS Modem details ZEUS Modem-1 ZEUS Modem-2 ZEUS Modem-3 J2 –Sierrawireless USB data connector ZEUS Modem connector details ZEUS host interface J9 –iO270audio/PTT connector Appendix G - ZEUS-FPIFdetails JP1 – TFT clock delay selection J1 – ZEUS LCD cable connector J2 – Generic LCD connector J3 – Direct connection to a NEC NL3224BC35-205.5inch 320x240 TFT display J4 – Backlight inverter connector J5 – STN Bias connector Appendix H - ZEUS-FPIF-CRTdetails J1 – ZEUS LCD cable connector J2 – CRT connector Appendix H - Acronyms and abbreviations Page Appendix I - RoHS-6Compliance - Materials Declaration Form Confirmation of Environmental Compatibility for Supplied Products Index