Smart Machine Smart Decision
SIM5320JE-TE_Hardware Design_V1.01
2012-07-10
38
Table 20: GPIO configuration
Keypad interface
GPIO No.
KEYPAD_4
GPIO6
KEYPAD_3
GPIO7
KEYPAD_2
GPIO8
KEYPAD_1
GPIO9
KEYPAD_0
GPIO10
KEYSENSE_N4
GPIO11
KEYSENSE_N 3
GPIO12
KEYSENSE_N 2
GPIO13
KEYSENSE_N 1
GPIO14
KEYSENSE_N 0
GPIO15
Note: Refer to document [23] for detailed information of Keypad Application Note.
3.8
USB Interface
SIM5320JE-TE module contains a USB interface. This interface is compliant with the USB2.0
specification. The USB2.0 specification requires hosts such as the computer to support all three USB
speeds, namely low-speed (1.5Mbps), full-speed (12Mbps) and high-speed (480Mbps). USB charging and
USB-OTG is not supported.
Table 21: Electronic characteristic
Input voltage scope( V )
Pin name
Pin No.
Min
Typ
Max
USB_VBUS
49
4.4
5.0
5.25
USB_DM
50
USB_DP
51
They are compliant with the USB 2.0 specification.
3.8.1
Application Guide
Currently SIM5320JE-TE supports the USB suspend and resume mechanism which can help to save
power. If no transaction is on USB bus, SIM5320JE-TE will enter suspend mode. When some events
such as voice call or receiving SMS happen, SIM5320JE-TE will resume normal mode automatically.
