Symmetricom XL-GPS User Manual

3750 Westwind Boulevard
Santa Rosa, California 95403
Main 707.528.1230
Fax 707.527.6640
www.symmetricom.com
TT&M Division
128Mbit RAM Volatile Yes U25
Symmetricom P/N 148-00200-000
MICRON P/N MT48LC4M32B2P-7
(IC SDRAM 1MX32X4B 7NS 3.3V ROHS)
Function: User configuration settings. Firmware controlled.
Cannot be re-programmed by user.
Clearing: Reset to factory settings per the Operation Manual instructions.
16Kbit Main Processor RAM Volatile Yes U20
Symmetricom P/N 178S-NET-50
NETSILICON, INC. P/N NET+50-QIN-3
(NET + ARM PROC 208-P (NET+50))
Function: Process user and control data. Programs FPGA using data from U39.
Cannot be re-programmed by user.
Clearing: Turn off unit.
40Kbit FPGA Volatile Yes U21
Symmetricom P/N 132-22270-26-2
Xilinx XC2S100-6PQG208C
FPGA SPARTAN II 208-P +2.5V
Function: FPGA Programming.
Cannot be re-programmed by user.
Clearing: Turn unit off.
Note: The below storage components are on the 089-00140-000 XL-GPS V2 MAIN BOARD ASSEMBLY
Memory Size Memory Type Volatile/Non-Volatile User Data Location
256KByte Flash EEPROM Non-Volatile No U14
4KByte EEPROM Non-Volatile No
12KByte RAM Volatile Yes
Symmetricom P/N 136-31256-26-2
FREESCALE P/N MC9S12DG256CFUE
(IC MICROCONTROLLER 16-BIT QFP80)
Function: Flash EEPROM Programming code for FPGA and factory firmware
User cannot write to or re-program this device.
EEPROM Not used.
User cannot write to or re-program this device.
RAM Stores executable memory and user settings.
User cannot re-program this device.
Clearing: Flash EEPROM No erase function.
EEPROM No erase function.
RAM Turn unit off
32Kbit FPGA Volatile Yes U3
Symmetricom P/N 148-00357-000
XILINX XC2S50-5TQG144C
(IC FPGA 1728-CELL 3.3V CMOS TQFP144 ROHS)
Function: FPGA Programming.
Cannot be re-programmed by user.
Clearing: Turn unit off.

Symmetricom XL-GPS Specifications

General

Brand	Symmetricom
Model	XL-GPS
Category	Receiver
Language	English