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L811-EB Hardware User Manual Page 12 of 47
3.1.2
Pin Definition
The pin definition is as follows:
Pin
Pin Name
I/O
Reset Value Pin Description
Type
USB2.0
A11
VBUS
PI
USB VBUS Supply
2.0---5.25V
A12
USB_DN
IO
T
USB Data Minus
0.3---3.0V
A13
USB_DP
IO
T
USB Data Plus
0.3---3.0V
SIM
D15
VSIM1
PO
USIM power supply
1.8V/3.0V
E15
SIM1_RST
O
L
USIM reset
1.8V/3.0V
F15
SIM1_CLK
O
L
USIM clock
1.8V/3.0V
G15
SIM1_DATA
IO
L
USIM
data,internal pull up(4.7KΩ)
1.8V/3.0V
H15
SIM1_CD
I
T
USIM
detect, pull up(390KΩ)
High active
1.8V
F14
SIM1_DP
IO
PD
USB data plus for USIM card
(not support now)
G14
SIM1_DN
IO
PD
USB data minus for USIM card
(not support now)
UART1
A9
UART1_TXD
O
PU
UART1 transmit Data
CMOS 1.8V
A10
UART1_RXD
I
PD
UART1 receive Data
CMOS 1.8V
K14
UART1_RTS
O
PU
UART1 Request To Send
CMOS 1.8V
L14
UART1_CTS
I
PU
UART1 Clear To Send
CMOS 1.8V
EINT
J15
WAKEUP
I
L
Wake up module
CMOS 1.8V
K15
W_DISABLE#
I
L
Disable WWAN
CMOS 1.8V
H14
EINT3
I
L
ACM/MBIM interface switch
(Reserved)
CMOS 1.8V
J14
BODY_SAR
I
L
Body sar detect
CMOS 1.8V
System Status Indicator