MYD-Y7Z010/007S Development Board Hardware User Guide
MYIR Electronics Limited
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Chapter 3 Hardware Introduction
3.1 Power
This figure shows the power sequence of power supplys on board. By Cascading Power Good
signal to Enable signal, the system powers in sequence: 1.0V-> 1.8V-> 1.5V-> 3.3V. The 3.3V is
enabled last, and then the power module produces a reset signal to SoC. After the reset signal is
deasserted, system starts to run.
3.2 Boot Mode Setting
The core board boots in QSPI mode by default. Users can set the Jumpers (Boot_JP1 and
Boot_JP2) to boot in SD card mode or JTAG mode.
Name
BOOT_JP1
BOOT_JP2
SOM Pin
C19
C20
SoC Pin
PS_MIO4
PS_MIO5
JTAG Boot mode
L
L
QSPI Boot
L
H
SD Card Boot
H
H
Table 5-1
