SNL320
16-Bit LCD Controller
SNL320
NAND Flash
I/O0~I/O7
ED0~ED7
RD\
RE\
WE\
WR\
NCS\
CE\
ALE
CLE
R/B\
WP\
ALE
CLE
R/B\
WP\
13. USB INTERFACE
The SNL320 provides a USB 1.1 interface, user can download/upload data from/to PC
through this USB interface. It is support control transfer and bulk transfer.
SNL320 provides twin buffers for data or command transition and the buffer size of
those twin buffers is 64bytes.
14. LCD INTERFACE
14.1 LCD Controller Interface (8-bit interface)
The extension bus of SNL320 supports not only external memory device but also 8-bit
8080/6800 microprocessor interface for external LCD controller which already built-in
LCD display RAM. User should enable extension bus before driving external LCD
driver, and define the chip select pin you used to connect to LCD driver in EBC
register.
In 8-bit interface LCD controller, LCD display data is stored in LCD controller. Any
change of LCD display is sent out to external LCD driver’s RAM by addressing
different SRAM space. The interface emulates the 8080/6800-series interface to
speed up the interface data moving processing.
Figure-5 and Figure-6 are the timing diagrams between SNL320 and LCD controller by using
8-bit 8080/6800 interface.
Ver: 1.2
18
July 22, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
