Use Instructions
Table Of Contents
- 1 About this document
- 2 Product Overview
- 3 Interface Description
- 3.1 PIN Definition
- 3.2 Operating condition
- 3.3 Digital I/O characteristics
- 3.4 Power Interface
- 3.5 UIM interface
- 3.6 PCM interface(TBD)
- 3.7 USB2.0 interface
- 3.8 UART Interface
- 3.9 Power on/off and reset interface
- 3.10 Interactive interface
- 3.11 Net Light interface
- 3.12 System boot configuration and download
- 3.13 Analog and Digital conversion (ADC) interface
- 3.14 I2C interface
- 3.15 SPI interface
- 3.16 Antenna interface
- 4 Product characteristics
- 5 Design guideline
- 6 Manufacturers
- 7 Package Storage information
- 8 Safety Information
L710HG Hardware Design
36
OFF
Power off / Sleep
Note: NETLIGHT output low level as “ON”, and high level as “OFF”.
3.12 System boot configuration and download
3.12.1 Pin definition
L710HG can configure BOOT_CONFIG (Boot Configuration) pin to VDD_1V8 to disable the
WATCHDOG function when power-on.
Also force module to enter USB download mode by pulling up the FORCE_USB_BOOT and pulling
down the PWRKEY.
Table 3-19 Boot configuration and force USB download
Pin No.
Net name Function description note
23 GPIO(System
on)
BOOT_CFG0(befo
re system on)
Pull up this pin change boot
configuration register value
Multiplex
pin
58 GPIO(System
on)
FORCE_USB_BOOT
(
before system
on)
Pull up this pin change boot
configuration register value
Multiplex
pin
3.12.2 Boot configuration and force USB interface application
L710
1.8V
FORCE_USB_BOO T
SW
10K
Figure 3-21 boot configuration and force USB download recommended circuit