FALCOM JP18 GPS receiver - Hardware manual

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JP18 FALCOM GPS RECEIVER VERSION 1.0.7 6 HARDWARE INTERFACE AND CONFIGURATION SIGNALS 6.1 JP18 - QFN-Pin Configuration Note the orientation of pins on the JP18 receiver. When viewing the back side on the JP18 receiver, you will see a cut pad on the lower-right-corner. Given this viewing orientation (see fig. 7), Pad 22 is on the right-bottom and Pad 1 is on the bottom-right. Figure 4: JP18 pin identification PAD Name I/O Description Level 1 GPIO 0 I/O User defined GPIO 1.8 V 2 VRTC_REG_IN I Power for RTC and SRAM. It must be always connected to the VCC pin. 3 ON/OFF I In the hardware revision "4d", this pin is internally pulled low through a 47 kΩ resistor. If not used leave it open. For detailed information about this pin, see description in chapter 6.2, page 22. 3.3 V – 5.5 V 4 VRF O Output RF-regulator 2.7 V; Imax = 10 mA 5 VANT I Power-supply for the active GPS antenna. Vin = 2.7V - 5V; Imax =20 mA 6 GND - Ground 0 V 7 RF_IN I RF-Input, L1, 1575,42 MHz 50 Ohms @ 1575,42 MHz 8 GND - Ground 0 V 1.2 V 9 WAKEUP O Regulator Power Down Output. Active low 1.2 V 10 TM O Time Mark Output (1 PPS) 1.8 V 11 RXA I RS232 line (receive data) 1.8 V 12 TXA O RS232 line (transmit data) 1.8 V 13 RES I System Reset Input. Connect to GND for RESET. 1.2 V 14 SPI_DI I SPI-Data-IN 15 SPI_DO O SPI-Data-OUT Not supported in the current 1.8 V 16 SPI_CS O SPI-Chip-Select software. 1.8 V 1.8 V 17 SPI_CLK I SPI-Clock 1.8 V 18 DATA 0 I Input at startup. See Table 1: 1.8 V This confidential document is the property of FALCOM and may not be copied or circulated without permission. Page 20
JP18 FALCOM GPS RECEIVER VERSION 1.0.7 PAD Name I/O Description Level 19 DATA 1 I Input at startup. SeeTable 1: 1.8 V 20 VCC I Main input power supply. To eliminate unwanted ripple on the supply voltage, it is recommended that the power supply be filtered by a 10uF/10V capacitor to ground. 21 VIO O Output voltage for IO-Block 1.8 V 22 GPIO 8 I User defined GPIO 1.8 V Table 3: JP18 - Ball description 3.3 V – 5.5 V This confidential document is the property of FALCOM and may not be copied or circulated without permission. Page 21
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