ZTE Corporation ZM8300G 用户手册
ZTE ZM8300G Module Hardware User Manual
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and GND, with the goal of filtering out interference from RF signals. Then, connect a
zero-ohm resistor in series to the USIM_DATA, USIM_CLK, and USIM_RESET signal lines
as a measure reserved for ESD protection and EMI design.If the hot plug for SIM is applied,
contact ZTE FAE team.
3.8.3
Circuit Recommended for the USIM Card Interface
Figure 3-13 illustrates the peripheral circuit recommended for the USIM card interface.
USIM
Slot
sw
c
7
c6
c5
c3
c
2
c
1
G
N
D
[0
~
9
]
USIM_PWR
USIM_RESET
USIM_CLK
USIM_DATA
USIM_DET
VIO
3
3
p
F
0
.1
u
F
0Ω
0Ω
0Ω
1KΩ
NA
N
A
N
A
N
A
1
2
3
2
3
4
5
USIM1_DATA
USIM_PWR
USIM1_RESET
USIM1_CLK
Overvoltage
Protectors
USIM1_RESET
USIM1_CLK
USIM1_DATA
Figure 3-13Peripheral Circuit Recommended for the USIM Card Interface
In addition to the method of designing a USIM card slot on the system board, customers can
design an eSIM chip. The ST or Gemalto scheme is recommended.
3.9 USB Interface
3.9.1
Pin Description
The ZM8300G module provides an integrated USB transceiver, which complies with
USB2.0 and supports the high speed mode (480 Mbit/s), full speed mode (12 Mbit/s), and
low speed mode (1.5 Mbit/s). The USB interface primarily applies to AT commands, data