Working With Timing Commander™ For Programing / Configuration; Default Operation; Figure 5. Board Setting For Default Operation - Renesas 8A3 72QFN Series Manual

8A3xxxx 72QFN Evaluation Kit Manual
2. Working with Timing Commander™ for Programing /
Configuration
The following sections are best cross-referenced with the ClockMatrix GUI Step-by-Step User Guide that is
available on the ClockMatrix Timing Solutions page and various ClockMatrix device product pages.
2.1

Default Operation

The board can operate off an EEPROM that has stored all information including firmware and a default
configuration data. A default operation provides a sanity check on the board before running the board through the
Timing Commander tool. Set the board in the following default conditions (for jumper and switch positions, see
Figure 5):
▪ Set all the GPIOs to the center position. This will ensure that GPIO9 is high and that the serial port is configured
for I2C 1 byte addressing.
▪ VDDA = 3.3V, VDD_ FOD = 1.8V, and VDDO_Qx = 3.3V
▪ Crystal frequency = 50MHz
▪ CLK0 = 25MHz
▪ FTDI, CM device, and EEPROM share the same I2C bus by jumping Pin 1 and 2 of JP12 and JP13
With the above default conditions ready, connect the board to the PC using a USB cable (type A on the PC side
and mini-type on the board side), and power up the board using a single +5V supply. On power-up, the
ClockMatrix device will read its firmware and configuration data from EEPROM and update all registers. When this
process is completed, the following frequencies are available:
▪ Q0 = 122.88MHz
▪ Q1 = 122.88MHz

Figure 5. Board Setting for Default Operation

Note: In order to set GPIO9 to "High", the switch for GPIO9 must be set either to the "+" (high) position or the
center position (see Figure 4).
R31UH0015EU0101 Rev.1.01 Page 6
Apr 26, 2022