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Programming The Eeprom - Renesas ClockMatrix 8A3 Series Application Note

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ClockMatrix
In the case of prototype boards, a PDIP socket, such as the DILV8P-223TLF can be used (see
allows for easy removal of the EEPROM so that it can be programmed using an external board, such as the Total
Phase EEPROM Socket Board.
3.

Programming the EEPROM

There are three options for programming the EEPROM:
• External EEPROM flash card
• Header
• Clock Matrix chip
3.1
External Flash Card Option
For this option, use the PDIP socket. Use the Total Phase EEPROM socket board to program the EEPROM and
then place the EEPROM into the socket. For more information, see Programming the 8A3x000 EEPROM with
Total Phase. Alternatively, another vendor's EEPROM flash card can be used.
3.2
Header Option
For this option, the EEPROM is installed in the system board and an accompanying 3-pin header is used as
described in Programming the 8A3x000 EEPROM with Total Phase. However, connect the Total Phase Aardvark
card directly to the 3-pin header and use the Total Phase software to program the EEPROM.
3.3
Clock Matrix Option
For this option, the ClockMatrix chip serves as the intermediary, transferring the data from the System Device to
the EEPROM, as shown in
ClockMatrix device through the Main or Auxiliary Serial port and send it the firmware data. In turn, the ClockMatrix
device will send the data to the EEPROM chip. Note that it is the customer's responsibility to parse the .hex file
into a format that is usable by their system.
The ClockMatrix device contains a register buffer that functions as an EEPROM read/write buffer. Access to the
buffer is obtained using the following registers. For register offset values, see the 8A3xxxx Family Programming
Guide that corresponds to the firmware present in the ROM.
Feb.10.20
Figure 2. PDIP Socket
Figure
3. Either a CPU, an FPGA, or a different System device will "talk" to the
Figure 3. Programming the EEPROM through Clock Matrix
EEPROM Programming Instructions
 
Figure
2). This
 
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