19 UNIVERSAL SERIAL INTERFACE WITH LCD INTERFACE (USIL)
19-46
Seiko Epson Corporation
S1C33L26 TECHNICAL MANUAL
USIL LCD SPI Mode Data Configuration Register (USIL_LSDCFG)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
USIL LCD SPI
Mode Data
Configuration
Register
(USIL_
LSDCFG)
0x30068f
(8 bits)
D7–4 –
reserved
–
–
–
0 when being read.
D3–2 LS18DFM
[1:0]
LCD SPI 18-bit data format select LS18DFM[1:0]
Data format
0x0 R/W
0x3
0x2
0x1
0x0
Format 3
Format 2
Format 1
Format 0
D1–0 LSDMOD
[1:0]
LCD SPI data mode select
LSDMOD[1:0]
Data mode
0x0 R/W
0x3
0x2
0x1
0x0
24-bit mode
18-bit mode
16-bit mode
8-bit mode
Note: This register is effective only in LCD SPI mode. Configure USIL to LCD SPI mode before setting
this register.
D[7:4]
Reserved
D[3:2]
LS18DFM[1:0]: LCD SPI 18-bit Data Format Select bits
Selects a data format in 18-bit mode. (See Figure 19.8.6.)
8.7 LCD SPI 18-bit Data Format
Table 19.
LS18DFM[1:0]
Data format
0x3
Format 3
0x2
Format 2
0x1
Format 1
0x0
Format 0
(Default: 0x0)
D[1:0]
LSDMOD[1:0]: LCD SPI Data Mode Select Bit
Selects the LCD SPI data mode.
8.8 LCD SPI Data Mode
Table 19.
LSDMOD[1:0]
Data mode
0x3
24-bit mode
0x2
18-bit mode
0x1
16-bit mode
0x0
8-bit mode
(Default: 0x0)
LSCMDEN = 0
LSCMDEN = 1
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
CMD
TD[7:0]
8.4 8-bit Data Format
Figure 19.
LSCMDEN = 0
LSCMDEN = 1
(RGB mode)
(BGR mode)
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
TD[7:0]
R5 R4 R3 R2 R1 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1
B5 B4 B3 B2 B1 G5 G4 G3 G2 G1 G0 R5 R4 R3 R2 R1
TD[7:0]
CMD
8.5 16-bit Data Format
Figure 19.