SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 100

• Manufacturer Part Number: SPC8104
• Description: VGA LCD CONTROLLER
• Manufacturer: S-MOS Systems

LCD “B Set” Panel Size Registers
bits 7-0
bits 7-0
bits 7-0
bits 7-0
Hardware Functional Specification
01 Horizontal Panel Size Register RW (if AUX[00] B0 = 1)
bit 7
05 Horizontal Non-Display Period RW (if AUX[00] B0 = 1)
bit 7
10 Vertical Non-Display Period RW (if AUX[00] B0 = 1)
bit 7
12 Vertical Display Size Register RW (if AUX[00] B0 = 1)
bit 7
SP1-74
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bit 6
bit 6
bit 6
bit 6
Horizontal Panel Size Register Bits [7:0]
The Horizontal Panel Size specifies the horizontal size of the LCD panel in the number of 8-dot
characters. For example, a 640 dot panel is programmed with the value 640/ 8 = 50h.
Horizontal Non-Display Period Register Bits [7:0]
The Horizontal Non-Display Period specifies the horizontal size of the LCD non-display period in
the number of 8-dot characters. This register should NEVER be programmed with a value less than
12 or 0ch. For example, a non-display period of 160 pixels would be programmed the value 160/8 =
14h. This register should be modified to control the frame rate of passive panels.
Vertical Non-Display Period Register Bits [7:0]
The Vertical Non-Display Period specifies the vertical size of the non-display period in the number
of lines. Most passive panels require a value of 2; however the full range of 0 to 255 is possible.
Vertical Display Size Register Bits [7:0]
The Vertical Display Size specifies the vertical size of the LCD panel in the number of lines/2 for
single panels and the number of lines/4 for dual panels. For example a 480 line single panel is pro-
grammed with the value 480/2 = f0h. A 480 line dual panel would be programmed with the value
480/4 = 78h
Vertical Display Size / n (n=2 for single panel, 4 for dual panel)
bit 5
bit 5
bit 5
bit 5
Vertical Non-Display Period in Lines
Horizontal Non-Display Period / 8
bit 4
bit 4
bit 4
bit 4
Horizontal Panel Size
X15-SP-001-08.1
bit 3
bit 3
bit 3
bit 3
bit 2
bit 2
bit 2
bit 2
bit 1
bit 1
bit 1
bit 1
bit 0
bit 0
bit 0
bit 0
412-1.0
SPC8104