User guide
UC864-E/G/WD/WDU Hardware User Guide
1vv0300766a Rev.4
- 03/02/09
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 4 of 78
Contents
1. OVERVIEW............................................................................................................................................................... 6
1.1. UC864-E/G/WD/WDU
PRODUCT SPECIFICATION .............................................................................................. 8
2. MECHANICAL DIMENSIONS............................................................................................................................... 9
2.
1. UC864-E
MECHANICAL DIMENSIONS.................................................................................................................. 9
2.2. UC864-G
MECHANICAL DIMENSIONS ............................................................................................................... 10
2.3. UC864-WD/WDU
MECHANICAL DIMENSIONS ................................................................................................. 11
3. UC864-E/G/WD/WDU MODULE CONNECTIONS ........................................................................................... 12
3.
1. PIN-OUT........................................................................................................................................................... 12
3.
2. A
NTENNA CONNECTOR(S) ................................................................................................................................. 16
4. HARDWARE COMMANDS.................................................................................................................................. 17
4.
1. T
URNING ON THE UC864-E/G//WD/WDU....................................................................................................... 17
4.2. I
NITIALIZATION AND ACTIVATION STATE .......................................................................................................... 17
4.3. T
URNING OFF THE UC864-E/G/WD/WDU ...................................................................................................... 20
4.3.1. Hardware Shutdown ..................................................................................................................................... 20
4.
3.2. Hardware Unconditional Restart ................................................................................................................. 20
5. POWER
SUPPLY.................................................................................................................................................... 22
5.
1. P
OWER SUPPLY REQUIREMENTS ........................................................................................................................ 22
5.2. G
ENERAL DESIGN RULES................................................................................................................................... 24
5.2.1. Electrical Design Guidelines........................................................................................................................ 24
5.2.1.1. + 5V Input Source Power Supply Design Guidelines ............................................................................................25
5.2.1.2. + 12V Input Source Power Supply Design Guidelines ..........................................................................................26
5.2.1.3. Battery Source Power Supply Design Guidelines ..................................................................................................28
5.2.1.4. Battery Charge Control Circuitry Design Guidelines.............................................................................................28
5.2.2. Thermal Design Guidelines .......................................................................................................................... 30
5.
2.3. Power Supply PCB Layout Guidelines ......................................................................................................... 32
6. ANTE
NNA(S)........................................................................................................................................................... 33
6.
1. GSM/WCDMA
ANTENNA REQUIREMENTS....................................................................................................... 33
6.2. GSM/WCDMA
ANTENNA - INSTALLATION GUIDELINES .................................................................................. 34
6.3. GPS
ANTENNA REQUIREMENTS (UC864-G ONLY) ............................................................................................ 34
6.4. GPS
ANTENNA - INSTALLATION GUIDELINES (UC864-G ONLY) ....................................................................... 35
7. LOGIC LEVEL SPECIFICATIONS..................................................................................................................... 36
7.
1. R
ESET SIGNAL ................................................................................................................................................... 38
8. SERIAL PORTS ...................................................................................................................................................... 39
8.
1. M
ODEM SERIAL PORT ........................................................................................................................................ 39
8.2. RS232
LEVEL TRANSLATION ............................................................................................................................. 41
8.3. 5V
UART LEVEL TRANSLATION ....................................................................................................................... 44
9. USB PORT ............................................................................................................................................................... 47
9.
1. USB
TRANSCEIVER SPECIFICATIONS .................................................................................................................. 48
10. AUDIO SECTION OVERVIEW ....................................................................................................................... 50