Quectel LC79D User Manual

GNSS Module Series
LC79D Hardware Design
LC79D_Hardware_Design 23 / 42
Android
SPI_CS
SPI_CLK
SPI_MOSI
SPI_MISO
LC79D (B)
SPI_CS
SPI_CLK
SPI_MOSI
SPI_MISO
NSTANDBY
AP_REQ
REQ
RDY
GPIOX
GPIOX
GPIOX
GPIOX
BOOT GPIOX
Control
circuit
Figure 7: Reference Design of SPI Interface
Must keep BOOT pin at high level for 100ms during the startup of LC79D (B) module. For more details
about the control circuit, please refer to documents [3].
3.7. I2C Interface*
LC79D module provides one I2C interface which provides features as listed below:
 Support Standard mode (100kbps), Fast mode (400kbps), Fast mode Plus (1Mbps), and High-Speed
mode (3.4Mbps).
 Single-master capability (no multimaster or slave capability).
 Support for both 7-bit and 10-bit addresses.
 Work on master mode.
"*" means under development.
NOTE
NOTE

Quectel LC79D Specifications

General

Brand	Quectel
Model	LC79D
Category	Control Unit
Language	English