SPFD54124B Drise, SPFD54124B Datasheet - Page 110

• Manufacturer Part Number: SPFD54124B
• Description: 396-Channel 6-Bit Source Driver
• Manufacturer: Drise

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7.2.1.
The MPU interfaces of SPFD54124B support 8-bit, 9-bit, 16-bit, and 18-bit’s 80- or 68-system Interface and Serial Peripheral Interface (SPI),
which can be set by the P68 and IM2/1/0 pins. The MPU interface can set instructions and access RAM. Table 7.2.1 depicts the interface
corresponding to P68and IM2/1/0 settings.
Table 7.2.1
7.2.2.
The MCU uses a 11-wires 8-data parallel interface or 19-wires 16-data parallel interface or 12-wires 9-data parallel interface or 21-wires
18-data parallel interface. The chip-select CSX(active low) enables and disables the parallel interface. RESX (active low) is an external
reset signal. WRX is the parallel data write, RDX is the parallel data read and D[17:0] is parallel data.
The Graphics Controller Chip reads the data at the rising edge of WRX signal. The D/CX is the data/command flag. When D/CX=’1’, D[17:0]
bits are display RAM data or command parameters. When D/C=’0’, D[17:0] bits are commands.
The 8080-series bi-directional interface can be used for communication between the micro controller and LCD driver chip. The selection of
this interface is done when P68 pin is low state (DGND). Interface bus width can be selected with IM2, IM1 and IM0.
The interface function of 8080-series parallel interface are given in Table 7 2.2
Table 7.2.2 The function of 8080-series parallel interface
© ORISE Technology Co., Ltd.
Proprietary & Confidential
SPI4 P68 IM2 IM1 IM0
P68 IM2 IM1 IM0
0
0
1
0
0
0
0
-
-
-
-
-
-
-
-
0
0
0
0
0
1
1
1
1
1
-
1
1
1
1
Interface Type Selection
8080-Series Parallel interface(P68=’0’)
0
1
1
1
1
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
-
-
-
0
1
0
1
0
1
0
1
0
1
0
1
-
-
-
Interface
Parallel
Parallel
Parallel
Parallel
16-bits
18-bits
8-bits
9-bits
8080 MCU 8-bits Parallel
8080 MCU 9-bits Parallel
3-Pin Serial interface
8080 MCU 16-bits Parallel
8080 MCU 18-bits Parallel
3-Pin Serial interface
6800 MCU 8-bits Parallel
6800 MCU 16-bits Parallel
6800 MCU 9-bits Parallel
6800 MCU 18-bits Parallel
4-Pin Serial interface
D/CX
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
Interface
RDX
↑
↑
↑
↑
↑
↑
↑
↑
1
1
1
1
1
1
1
1
WRX
↑
↑
↑
↑
↑
↑
↑
↑
1
1
1
1
1
1
1
1
Write 8-bits command (D7 to D0)
Write 8-bits display data or 8-bits parameter (D7 to D0)
Read 8-bits command (D7 to D0)
Read 8-bits parameter or status (D7 to D0)
Write 8-bits command (D7 to D0)
Write 16-bits display data (D15 to D0) or 8-bits parameter (D7 to D0)
Read 8-bits command (D7 to D0)
Read 8-bits parameter or status (D7 to D0)
Write 8-bits command (D7 to D0)
Write 9-bits display data (D8 to D0) or 8-bits parameter (D7 to D0)
Read 8-bits command (D7 to D0)
Read 8-bits parameter or status (D7 to D0)
Write 8-bits command (D7 to D0)
Write 18-bits display data (D17 to D0) or 8-bits parameter (D7 to D0)
Read 8-bits command (D7 to D0)
Read 8-bits parameter or status (D7 to D0)
Via the read instruction (8-bits, 24-bits and 32-bits read parameter
RDX strobe (8-bits read data and 8-bits read parameter)
RDX strobe (16-bits read data and 8-bits read parameter)
RDX strobe (9-bits read data and 8-bits read parameter)
RDX strobe (18-bits read data and 8-bits read parameter)
Via the read instruction (8-bits, 24-bits and 32-bits read parameter
E strobe (8-bits read data and 8-bits read parameter)
E strobe (16-bits read data and 8-bits read parameter)
E strobe (9-bits read data and 8-bits read parameter)
E strobe (18-bits read data and 8-bits read parameter)
Via the read instruction (8-bits, 24-bits and 32-bits read parameter
110
Read back selection
Function
SPFD54124B
Preliminary
Preliminary Version: 0.6
APR. 26, 2007