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| 型号： | 80515-FPBM-TFP2 |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/36页 |
| 文件大小： | 0K |
| 描述： | BOARD TFP2 FLASH PROGR 73S12XX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | Teridian™ |
| 类型： | 闪存 |
| 适用于相关产品： | Teridian Embedded Controllers |
| 所含物品： | 编程器，线缆，磁盘，电源 |
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Flash Programmer Model TFP2 User’s Manual
Figure 2-17: Parameter Mode Selection
After setting the Parameter Mode using the “E” command, programming can be initiated using the “P”
command or by pressing the front panel Program button.
When Parameter Mode preservation is enabled, the TFP2 programming operation copies the existing
parameter data from the target device. A bulk erase and reprogramming of the target’s FLASH memory
is performed. The TFP2 then restores the previously copied parameter data starting at its highest
address location. Parameter data is re-written to decreasing address locations until all parameter data
locations have been restored. If new code (non 0xFF data) is encountered (above the lowest reserved
parameter address location) the message “No parameters preserved” is displayed during the
programming operation.
The location of the 4KB parameter space depends on the target device’s FLASH memory size. The
TFP2 determines the target FLASH memory size from the front panel Memory Size switch. The following
table shows the reserved address locations of parameter space for different memory sizes.
Memory Size
Switch
8KB
16KB
32KB
64KB
128KB
256KB
Parameter
Space Start
Address
Not Used
0x2000
0x5000
0xD000
0x0001:D000
0x0003:D000
Parameter
Space End
Address
Not Used
0x2FFF
0x5FFF
0xDFFF
0x0001:DFFF
0x0003:DFFF
Table 2-4: Parameter Space Address Location
Usage of the above parameter space assumes new program code does not exist at the previous
parameter(s) address locations. The TFP2 also assumes that the parameters are stored as a contiguous
block. This block of parameters can be located anywhere within the reserved memory locations.
Locating the parameters at the end of the Parameter Space allows for the program code to “grow” into the
lower addresses of the parameter space.
The location of the contiguous parameter block is determined by searching for a non 0xFF data byte
beginning at the Parameter Space “End Address” of the TFP2’s EEPROM image. The address counter is
decremented until a non 0xFF value is found. This locates the lowest address of the parameter data, the
“End Address” being the highest address.
The TFP2 Power-Up checksum verification expects to read the original Teridian checksum. The Power-
Up checksum verification may fail due to the code change. A Power-Up Verify fail does not prevent
correct device memory programming (these messages are informational only). Use the “T” command to
verify the current device checksum. The “T” command always includes the Parameter Space addresses
in its checksum calculation regardless of the Parameter Preservation Mode setting. However, the “C”
command operation varies with the Parameter Preservation Mode setting. The Parameter Space
addresses are included in the comparison when Parameter Preservation Mode is OFF. Otherwise, the
Parameter Space addresses are ignored if Parameter Preservation Mode is ON.
The Parameter Mode status is also displayed in the power-up initialization messages.
Revision 2.3
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