N1_Hardware_User_Guide
Copyright © Neoway Technology Co., Ltd
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The antenna should be installed far away from the SIM card and SIM card traces, especially to the built-in
antenna.
The SIM traces on the PCB should be as short as possible and shielded with GND copper.
The ESD protection diodes or small capacitors should be closed to SIM card on the PCB.
6.3 SDIO
N1supports SD/MMC cards of 4-bit mode, or devices based on the SDIO protocol and the latest SDIO 3.0
protocol.
6.3.1 SD Card
Figure 6-4 shows the reference design of the camera power supply.
Figure 6-4
Reference design of TF card interface
DAT2
CD/DAT3
CMD
VDD
TF connector
CLK
VSS
DAT0
DAT1
GND
GND
GND
GND
1
2
3
4
5
1
2
3
4
5
FV1
FV2
0.
1u
F
4.
7u
F
VREG_SDC_PWR
SDC2_DATA2
SDC2_DATA3
SDC2_CMD
SCD2_CLK
SCD2_DATA0
SCD2_DATA1
Table 6-1 lists TF card pins.
Table 6-1
TF card pins
Pin
Signal
I/O
Function
Remarks
26
VREG_SDC_PWR
PWR
SDIO
driver
power
supply,
supporting dual voltage of 1.8V and
2.95V, maximum current 500 mA
VDD
25
SDC2_CMD
O
Command line, impedance line
recommended
CMD
