Hardware+Design V1.07
Table Of Contents
- Revision History
- 1 Introduction
- 2 Package Information
- 3 Application Interface Specification
- 4 RF Specification
- 5 Reliability and Operating Characteristics
- 6 Guide for Production
- Appendix
Smart Machine Smart Decision
Figure 28: USB interface
Because of high bit rate on USB bus, pay attention to influence of junction capacitance of ESD component
on USB data lines. Typically, the capacitance should be less than 4pF @1MHz.
Note
：
The SIM5320 has two kinds of interface (UART and USB) to connect to host CPU. USB interface is mapped to
five virtual ports: “SIMTECH USB Modem”, “SIMTECH NMEA Device”, “SIMTECH ATCOM Device”, “SIMTECH
Diagnostics interface” and “SIMTECH Wireless Ethernet Adapter”.
3.9 SPI Interface
SPI interface of SIM5320 is master only. It provides a duplex, synchronous, serial communication link
with peripheral devices. Its operation voltage is 1.8V, with clock rates up to 26 MHz.
3.9.1 Pin Description
Table 21: Electronic characteristic
DC Characteristics
Pin name
Min Typ Max
SPI_CLK -0.3 1.8 2.1
SPI_CS_N -0.3 1.8 2.1
SPI_MOMI_DATA -0.3 1.8 2.1
SPI_MIMO_DATA -0.3 1.8 2.1
SIM5320_Hardware Design_V1.07 2012-09-21
39