Summary of Contents for Hadaru HPM103H-6
- Page 1 CONFIDENTIAL 2005-06-08 GPS Engine Module HPM103H-6 GPS Receiver REV 1.10 HPM103H-6...
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Page 2: Table Of Contents
3.1 System connector................7 3.2 Reset.................... 10 3.3 UART interface................10 3.4 GPIO interface................11 3.5 RF-interface ................. 12 3.6 Interfacing considerations.............13 4. APPLICATION NOTES FOR HPM103H-6............. 15 4.1 External Interfaces ..............15 4.2 Antenna issues................15 4.3 Application Circuit................. 17 HPM103H-6... -
Page 3: System Description
CONFIDENTIAL 2005-06-08 1. SYSTEM DESCRIPTION 1.1 General Description A complete GPS receiver is implemented on the HPM103H-6 module. The module includes the following features: 25.4x25.4mm form factor Input for Active GPS antenna bias supply 16.3676MHz TCXO GPS radio based on uN8021 RF chip... -
Page 4: Technical Specification
Navigating: 130mW @ 2.7V ave. Idle mode(Navigation stopped): 22mW @2.7V typ. Sleep mode: 120µW @ 2.7V typ. RTC Back-Up mode: 1.5 uA max Protocols: NMEA-0183 V3.0, proprietary iTALK binary protocol 1.4 Block diagram Figure 1 Block diagram of HPM103H-6 GPS receiver HPM103H-6... -
Page 5: Mechanical Specification
CONFIDENTIAL 2005-06-08 2. MECHANICAL SPECIFICATION Pictures 2.1 Pictures Figure 2 HPM103H-6 modules w/ shield Figure 3 HPM103H-6 HPM103H-6... -
Page 6: Pin Configuration
CONFIDENTIAL 2005-06-08 2.2 HPM103H-6 Pin Configurations Figure 4 Pin Configuration HPM103H-6... -
Page 7: External Interfaces
CONFIDENTIAL 2005-06-08 3. EXTERNAL INTERFACES 3.1 System connector RF Input GPIO[0..15] GPIO-lines UART ports PORT0 and PORT1 UART ports XRESET External reset (active low) Supply voltage V_ANTENNA External antenna bias HPM103H-6... - Page 8 CONFIDENTIAL 2005-06-08 Table 1 System connector HPM103H-6 Note Input Supply Voltage Input Power and signal ground Boot Mode Select GPIO15 Input RXD0 Input UART Port 0, Receive Data (3) TXD0 Output UART Port 0, Transmit Data TXD1 Output UART Port 1, Transmit Data...
- Page 9 GPIO11), the drive impedance should be less than 10kohm in order to change the state. (2): HPM103H-6 module contains internal 100k pull up resistor to VCC. VIH min = 0.7 x VCC, VIL max = 0.3 x VCC. The base-band processor uN8031 includes also a keeper and the drive impedance should be less than 10kohm in order to change the state.
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Page 10: Reset
CONFIDENTIAL 2005-06-08 3.2 Reset NOTE HPM103H-6 requires an external Power-On-Reset (POR) circuit which provides a reset pulse at XRESET-pin after the supply voltages are connected. The reset pulse should be active (low state) at least 100ms after power-up. 3.3 UART interface Two asynchronous UART ports are available for serial interfacing. -
Page 11: Gpio Interface
Boot Mode Boot from flash The HPM103H-6 is configured for booting from Flash memory as a default. This is achieved with the internal pull-up resistors R12 and R13 at GPIO14&15. Other boot modes can be selected with external drive at the system connector (i.e. in Evaluation Kit, or by external host) at GPIO14&15. -
Page 12: Rf-Interface
CONFIDENTIAL 2005-06-08 3.5 RF-interface An external GPS antenna (active or passive) can be connected to the HPM103H-6 using the RF-input line. A 50 ohm PCB stripline is needed on the motherboard, see figure below for example layout. Figure 8 Example of RF interface layout on customer PCB The width of the 50ohm stripline is dependent of the PCB material and thickness. -
Page 13: Interfacing Considerations
Use a solid GND plane under the HPM103H-6 module to reduce LO-leakage at 1575 MHz, especially when the GPS antenna is close (<0.2 m) to the module. AGC range is 32 dB, which means that for HPM103H-6 module the external gain at 1575 MHz should not exceed 32 dB HPM103H-6... - Page 14 Blocking level is about –2 dBm at the RF input @ S/N degradation 3 dB. The receiver has a zero-IF topology. If two receivers are connected to the same antenna, local oscillator leakage cause blocking. power combiner/splitter that gives at least 20 dB isolation between ports. HPM103H-6...
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Page 15: Application Notes For Hpm103H-6
Rest of the I/O is also available for customer applications. 4.2 Antenna issues The HPM103H-6 GPS receiver can be used with a passive antenna. One typical application is shown below where the GPS antenna and the receiver are adjacent on the same side of the PCB. - Page 16 Note also that the enclosure material (e.g. plastic cover) also affect the resonance frequency in such a way that plastic material close to the antenna element move the resonance frequency downwards. This must be taken also into consideration when specifying the antenna resonance frequency. HPM103H-6...
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Page 17: Application Circuit
CONFIDENTIAL 2005-06-08 4.3 Application Circuit HPM103H-6...