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参数资料
| 型号： | IBM37RGB524CF17A |
| 元件分类： | 显示控制器 |
| 英文描述： | 1600 X 1280 PIXELS PALETTE-DAC DSPL CTLR, PQFP144 |
| 封装： | QFP-144 |
| 文件页数： | 37/72页 |
| 文件大小： | 509K |
| 代理商： | IBM37RGB524CF17A |
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36
March 17, 1995
RGB524
IBM
11
Direct Color (always bypasses
the palette). Either the 555 or
565 format can be selected. The
ZIB/LIN bit determines the
expansion to 24 bits (low order
bit ll). The SPR/CNT bit has
no effect.
Bit 5
BY16 POL - Bypass control bit polar-
ity. Determines the meaning of
the dynamic bypass control bit
(PIX[15], PIX[31]).
0
Control Bit Forces Bypass
Control BitPixel Path
0
Through Palette
(Indirect Color)
1
Bypass Palette
(Direct Color)
1
Control Bit Forces Lookup
Control BitPixel Path
0
Bypass Palette
(Direct Color)
1
Through Palette
(Indirect Color)
The BY16 POL bit has no effect
unless the B16 DCOL bits are set to
01.
Bits 4 - 3
Reserved
Bit 2
ZIB/LIN - Bit ll selection. For direct
color this bit species how the low
order bits of each color, R,G,B are
lled when 555 or 565 formats are
expanded to 24 bits.
0
ZIB - Zero Intensity Black. Low
order bits are set to 0.
1
LIN - Linear. The low order bits
are set to the values of the high
order bits.
For indirect color if CNT (contiguous)
addressing is selected, then ZIB/LIN
has no effect. If SPR (sparse)
addressing is selected then ZIB/LIN
must be set to 0 (ZIB). The palette
addressing is undened if LIN bit ll
is selected with sparse addressing.
Bit 1
555/565 - Selects 5 bits per color
(555) or 5 red, 6 green, 5 blue (565).
0
555
1
565
Bit 0
SPR/CNT - Sparse/Continuous. In
indirect mode, selects whether index
into palette is sparse or contiguous.
0
Sparse
1
Contiguous
This register only affects 15/16 BPP mode.
24 Bit Packed Pixel Control
Index:
0x000d
Access:
Read/Write
Power on Value: Undened
Bits 7 - 1
Reserved
Bit 0
B24P DCOL - 24 BPP Packed Direct
Color Control
0
Indirect Color (through the pal-
ette).
1
Direct Color (palette bypass).
This register only affects 24 BPP Packed mode.
0
1
2
3
4
5
6
7
B24P
Reserved
DCOL
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