SNL320
16-Bit LCD Controller
12.2.1 16-bit Mode
In 16-bit mode, all the data and OP code fetch are base on 16-bit data width. In
another hand, SNL320 will fetch data or OP code from external memory two times
automatically, in order to get a complete 16-bit width data.
SNL320
64M FLASH
EA0~EA22
ED0~ED7
EA[0..22]
A[-1~A21]
ED[0..7]
ED[8..15]
RD\
Q[0..7]
OE\
CE\
CS1\
EDWS
BYTE\
DSP 16-bit mode (for flash Byte mode connection)
Byte1
Byte2
Byte3
Byte4
Byte5
Byte6
0x000000
0x000001
0x000002
0x000003
0x000004
Word 1
Word 2
Read from
SNL320
0x000005
:
:
:
:
:
:
:
:
ROM/Flash/SRAM
Note: The bit14 of EBCR control register MUST set to be “1”.
12.2.2 8-bit Mode
SNL320 also reserved a 8-bit mode data access for user’s application. The only one
different is the addressing capability of 8-bit and 16-bit mode. In 16-bit mode, the
maximum addressing capability of each chip select pin (CS1~CS3) is 64M-bit (CS0 is
only 32M-bit) because the address pin EA[22].
In 8-bit mode, the EA[22] is a invalid address pin, so all the addressing capability
calculation is only a half of 16-bit mode.
Ver: 1.2
15
July 22, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
