Renesas ClockMatrix 8A3 Series, Application Note, Page: 3 / 8

ClockMatrix EEPROM Programming Instructions
Feb.10.20 Page 3 of 7
In the case of prototype boards, a PDIP socket, such as the DILV8P-223TLF can be used (see Figure 2 ). This
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.
Figure 2. PDIP Socket
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
Figure 3 . Either a CPU, an FPGA, or a different System device will “talk” to the
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.
Figure 3. Programming the EEPROM through Clock Matrix
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.