5G Module Series
5G-M2_EVB_User_Guide 23 / 34
3.7.2.2. Handset Interface (J0802)
The audio interface J0802 is designed for handsets. A schematic of the interface is shown below.
ESD
33 pF
ESD
ESD
ESD
33 pF
33 pF
N
M
_
3
3
p
F
N
M
_
3
3
p
F
33 pF
10 pF
10 pF
10 pF
10 pF
N
M
_
1
0
p
F
N
M
_
1
0
p
F
MICP
MICN
SPKP
SPKN
0R
J0802
Codec
ALC5686
4
1
3
2
BTB CON
J0803
AGND
AGND
AGND
AGND
Figure 16: Schematic of Handset Interface (J0802)
3.8 PCIe Interface to WLAN/Ethernet Module (J0501/J0502)
The EVB supports a PCIe interface to connect with PC or WLAN/Ethernet module:
⚫
If S0301.4 (PCIE_SEL) signal is set to
LOW
level side, the PCIe interface of the M.2 module will be
connected to Type-B interface (J0401) for communication with a PC (Quectel internal use only).
⚫
If S0301.4 (PCIE_SEL) signal is set to
HIGH
level side, the PCIe interface of the M.2 module will be
connected to WLAN/Ethernet module (J0501/J0502).
PCIE_CLK_P
J0101
M.2 Connector
PCIE_CLK_M
PCIE_RX_P
PCIE_RX_M
PCIE_TX_P
PCIE_TX_M
U0301
PCIe Switch
J0401
Type-B Connector
J0501&J0502
WLAN/ETH
S0301.4 (PCIE_SEL) = LOW
S0301.4 (PCIE_SEL) = HIGH
PCIe × 1
PCIe x 1
Figure 17: PCIe Interface Block Diagram