TVP3026M Datasheet, PDF (57/95 Pages) Texas Instruments – Video Interface Palette

2.15.3 Indirect Cursor Control Register (Index: 0x06, Access: R/W, Default: 0x00)
The indirect cursor control register (CCR) is accessed using the indirect register map. This register provides
for enabling and disabling the cursor and other cursor controls. The cursor mode-select can also be
controlled using the direct cursor-control register. The indirect cursor control register definition is listed in
Table 2–28.
BIT NAME
CCR7
CCR6
CCR5
CCR4
CCR3, CCR2
CCR1, CCR0
Table 2–28. Indirect Cursor-Control Register
VALUES
DESCRIPTION
0: Use indirect
CCR (default)
1: Use direct CCR
Cursor control register select. CCR7 selects which cursor control register is
used (direct or indirect). The video BIOS must initialize this bit to 1 for driver
software that uses the direct cursor control register.
0: Normal (default)
1: Invert
ODD/EVEN sense invert. When CCR6 is reset to 0, the field indicator
ODD/EVEN used by the hardware cursor in interlaced display mode, is set to
1 for the odd field and is reset to 0 for the even field. When CCR6 is set to 1,
the polarity of ODD/EVEN is the opposite.
0: Disable (default)
1: Enable
Enable interlaced cursor. When CCR5 is set to 1, interlaced cursor operation
is enabled. During interlaced cursor operation, the ODD/EVEN terminal
indicates the odd or even field, as determined by value in CCR6.
0: 2048 pixels
(default)
1: 4096 pixels
Vertical blank detection method. Vertical blank is detected using only the blank
signal. The logic detects when there has been either 2048 or 4096 consecutive
dot clocks between rising edges of Blank.
00: (default)
Cursor RAM address bits 9 and 8. CCR3 is bit 9 and CCR2 is bit 8. These bits
are used with the lower 8 bits of the cursor RAM address supplied by the cursor
RAM address register in the direct register map.
00: Cursor off
(default)
01: Three-color
cursor
10: XGA cursor
Cursor mode select. CCR1 and CCR0 disable the cursor and select the format
used to interpret the information stored in the cursor RAM when displaying the
cursor. See Table 2–27.
11: X-windows
cursor
2.15.4 Direct Cursor Control Register (Direct Register: 1001, Access: R/W,
Default: 0x00)
The direct cursor control register is accessed using the direct register map. This register provides an
alternate means of enabling and disabling the cursor and selecting the cursor mode. This register is provided
for compatibility with commonly used software drivers. The direct cursor-control register definition is listed
in Table 2–29.
BIT NAME
DCC7–DCC2
DCC1, DCC0
Table 2–29. Direct Cursor-Control Register
VALUES
DESCRIPTION
000000
Reserved
00: Cursor off
(default)
01: Three color
cursor
10: XGA cursor
Cursor mode select. DCC1 and DCC0 disable the cursor and select the format
used to interpret the information stored in the cursor RAM when displaying the
cursor. See Table 2–27.
11: X-windows
cursor
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