User Guide

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22
GM500-U1G_A
Hardware Development Guide
V
OL
max=0.38V
V
OH
min=2.01V
V
IL
min=-0.3V
V
IL
max=0.76V
V
IH
min=1.72V
V
IH
max=3.34V
SDC2_DATA0 113 IO Secure digital
controller 2 data bit 0
SDC2_CMD 111 IO Secure digital
controller 2
command
SDC2_CLK 112 DO Secure digital
controller 2 clock
1.8V：
V
OL
max=0.45V
V
OH
min=1.4V
3.0V：
V
OL
max=0.38V
V
OH
min=2.01V
SDC2_DET_N 114 DI Secure digital card
detection
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain
If do not need this, leave this pin not
connected.
SDC2_PWR_EN 115 DO Secure digital card
power enable
V
OL
max = 0.45V
V
OH
min = 1.35V
1.8V power domain
If do not need this, leave this pin not
connected.
VREF_2P85 116 PO Secure digital card
signal pull up power
Iomax=50mA
1.8V/2.85V
Only used for SD card pull up
If do not need this, leave this pin not
connected.
SGMIIInterface
Pin Name Pin NO. I/O Description DC Characteristics Comment
EPHY_INT_N 82 DI Ethernet PHY
interrupt
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain
If do not need this, leave this pin not
connected.
EPHY_RST_N 83 DO Ethernet PHY reset For 1.8V:
VOLmax=0.45V
V
OH
min=1.4V
For 2.85V:
V
OL
max=0.35V
V
OH
min=2.14V
1.8V/2.85V power domain
If do not need this, leave this pin not
connected.
SGMII_MDIO_DATA 84 IO Management data
input output data
For 1.8V:
V
OL
max=0.45V
VOHmin=1.4V
V
IL
max=0.58V
V
IH
min=1.27V
1.8V/2.85V power domain
If do not need this, leave this pin not
connected.