F35-XXL Hardware description - Falcom

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F35-XXL HARDWARE DESCRIPTION VERSION 1.10 Pin 43 (INTU) The INTU signal is connected to the NEC V850 port 06. It can trigger a user interrupt. (Note that disconnected CMOS ports must be programmed as pull up input or as output.) Pin 29 (EMODE) If the e-mode input pin is connected to GND (10 kOhm) the F35-XXL- SI boots from the external FLASH, otherwise it boots from the internal ROM. Pin 61 (NMI) The NMI pin is connected to the NEC V850 port 00. The NMI can wake up the V850 from the HALT mode. For programming the NMI refer to the NEC manual for the V850/SA1(UPD70F3017AY) hardware. Pin 106 (BootSel) For normal GPS functionality this pin has to be left open while the GPS-firmware is starting. After the start of the GPS-firmware the pin (106) can be connected to 3.3 V. In that case the first GPS-Port is switched to the pins (98, 100) on the 120-pin connector. In order to reprogram the FLASH of the GPS (e.g. updating a new firmware), this pin (106) has to be set to high (+3.3 V DC) before the internal GPSfirmware is started. Pin 101 (AVGND) In order to use the analogue inputs, the AVGND pin has to be connected to the reference voltage ground (usual the ground plane near the reference voltage source). To use the GPI1 to GPI8 for analogue input follow the instructions below: • Connect AVGND to the GND. • Connect AVDD to a voltage up to 4.6V. • Connect AVREF to a reference voltage up to AVDD (2.5V or 2.56, recommended). • See "demo_port_io.c" for software. • Refer to the NEC manual for the V850/SA1(UPD70F3017AY) hardware. GPS (GPIO’s) As far as the GPS GPIO’s is concerned, there is no access from the NEC V850 processor. These pins are to be controlled by internal GPS firmware. Unfortunately, the present GPS firmware does not support these pins, but these are depended on the GPS firmware loaded into the GPS FLASH memory. This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 33
F35-XXL HARDWARE DESCRIPTION VERSION 1.10 6 GPS core 6.1 Technical data FEATURES - 12 channel GPS receiver - power consumption: 220 mW (continuous mode with Low Power chipset) 60 mW (trickle power mode) - protocol: RXA/TXA: NMEA 4800 baud, Msg.: GLL, GGA, RMC, VTG, GSV, GSA, ZDA 8 data bits, no parity, 1 stop bit RXB/TXB: RTCM, 9600 baud - Trickle power mode: The F35-XXL enters the trickle power mode corresponding to figure 11 as soon as valid GPS data are available. As a result the average power consumption is reduced by approximately 80 % (approximately 60 mW). The settings for the trickle power mode can be modified using the SiRFstar demo software. For example if the F35-XXL is configured to enter the OnTime mode each 10 s for a duration of 200 ms the average power consumption can be reduced by approximately 95 % (approximately 15 mW, ca. 4,8 mA at Vcc=3.3 V). This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 34
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F35-XXL Hardware description - Falcom

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