Quectel EC21-A User Manual

LTE Standard Module Series
EC21_Series_Hardware_Design
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0.1 μF capacitor, and
close to the PHY side.
If unused, keep them
open.
SGMII_TX_P 124 AO SGMII transmit (+)
SGMII_RX_P 125 AI SGMII receive (+)
Connect it with a
0.1 μF capacitor, and
close to the module.
If unused, keep them
open.
SGMII_RX_M 126 AI SGMII receive (-)
USIM2_VDD 128 PO
SGMII_MDATA pull-
up power supply
Configurable power
supply.
1.8/2.85 V power
domain.
If unused, keep it
open.
Interfaces for WLAN and Bluetooth Applications
Pin Name Pin No. I/O Description DC Characteristics Comment
SDC1_DATA3 129 DIO
WLAN SDIO data
bit 3
V
OL
max = 0.45 V
V
OH
min = 1.35 V
V
IL
min = -0.3 V
V
IL
max = 0.6 V
V
IH
min = 1.2 V
V
IH
max = 2.0 V
1.8 V power domain.
If unused, keep them
open.
SDC1_DATA2 130 DIO
WLAN SDIO data
bit 2
SDC1_DATA1 131 DIO
WLAN SDIO data
bit 1
SDC1_DATA0 132 DIO
WLAN SDIO data
bit 0
SDC1_CLK 133 DO WLAN SDIO clock
V
OL
max = 0.45 V
V
OH
min = 1.35 V
1.8 V power domain.
If unused, keep it
open.
SDC1_CMD 134 DIO
WLAN SDIO
command
1.8 V power domain.
If unused, keep it
open.
PM_ENABLE 127 DO
WLAN power
control
1.8 V power domain.
If unused, keep it
open.
Active high.
WAKE_ON_
WIRELESS
135 DI
WLAN wake up
the module
V
IL
min = -0.3 V
V
IL
max = 0.6 V
V
IH
min = 1.2 V
V
IH
max = 2.0 V
1.8 V power domain.
Active low.
If unused, keep it
open.
WLAN_EN 136 DO
WLAN function
enable
V
OL
max = 0.45 V
V
OH
min = 1.35 V
1.8 V power domain.
Active high.
Cannot be pulled up

Quectel EC21-A Specifications

General

Brand	Quectel
Model	EC21-A
Category	Control Unit
Language	English