Hardware Development Guide of Module Product
All Rights reserved, No Spreading abroad without Permission of ZTEWelink
21
Figure 3-4 USB Typical Circuit Application
3.8
Serial Interface
3.8.1
SPI (Serial Peripheral Interface) Bus Interface
3.8.1.1
Description of PINs
The definition of SPI interface signaling is defined as shown in Table 3-7.
Table 3-7 Definition of SPI Signal
PIN
Signal Name
I/O Type
Function
39
SPI_ CS_N
O
SPI segment
40
SPI_ CLK
O
SPI clock
41
SPI_MISO_DATA
B
Main input, slave output
42
SPI_MOSI_DATA B
Main input, slave output
3.8.1.2
Electric Feature
The SPI bus of ZM5202 is configured as the master equipment, and there are three
modes for SPI:
Running mode: Basic running mode.
