SC1200UFH-266 AMD (ADVANCED MICRO DEVICES), SC1200UFH-266 Datasheet - Page 343
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SC1200UFH-266
Manufacturer Part Number
SC1200UFH-266
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.SC1200UFH-266.pdf
(443 pages)
Specifications of SC1200UFH-266
Operating Temperature (min)
0C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / Rohs Status
Not Compliant
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Video Processor Module - Video Processor Registers - Function 4
AMD Geode™ SC1200/SC1201 Processor Data Book
Offset 30h-33h
Offset 34h-37h
Offset 38h-3Bh
Offset 3Ch-3Fh
Controls the characteristics of the integrated video downscaler.
Offset 40h-43h
Indicates filter coefficients. The filters can be programmed independently to increase video quality when the downscaler is implemented.
Valid values for each filter coefficient are 0-15. The sum of coefficients must be 16. FLT_CO_4 is used with the earliest pixels and
FLT_CO_1 is used with the latest. Only luminance values of pixels are filtered.
19:16
31:28
27:24
23:20
19:16
15:12
14:8
31:7
11:8
Bit
7:4
3:0
4:1
7:4
3:0
15
6
5
0
Table 7-9. F4BAR0+Memory Offset: Video Processor Configuration Registers (Continued)
Description
CLK_SEL (Clock Select). Selects frequency (in MHz) of the display clock.
0000: 25.175
0001: 31.5
0010: 36
0011: 40
LFTC (Loop Filter Time Constant). This bit should be set when m (bits [14:8]) value is higher than 30.
m (Defines m PLL2 Value). Relevant when SEL_REG_CAL (bit 20) = 1. The following formula is used for calculating the
frequency using m and n values:
Fvco
Km
Kn
OSCCLK = 27 MHz
Reserved.
n (Defines n PLL2 Value). Relevant when SEL_REG_CAL (bit 20) = 1. The following formula is used for calculating the fre-
quency using m and n values:
Fvco
Km
Kn
OSCCL
Reserved.
DTS (Downscale Type Select).
0: Type A (Downscale formula is 1/m+1, m pixels are dropped, 1 pixel is kept).
1: Type B (Downscale formula is m/m+1, m pixels are kept, 1 pixel is dropped).
Reserved.
DFS (Downscale Factor Select). Determines the downscale factor to be programmed into these bits, where m is used to
derive the desired downscale factor depending on bit 6 (DTS).
DCF (Downscaler and Filtering). Enables/disables downscaler and filtering logic.
0: Disable.
1: Enable.
Note:
Reserved.
FLT_CO_4 (Filter Coefficient 4). For the tap-4 filter.
Reserved.
FLT_CO_3 (Filter Coefficient 3). For the tap-3 filter.
Reserved.
FLT_CO_2 (Filter Coefficient 2). For the tap-2 filter.
Reserved.
FLT_CO_1 (Filter Coefficient 1). For the tap-1 filter.
No downscaling support for RGB 5:6:5 and YUV 4:2:0 video formats.
= OSCCLK * Km/Kn
= m + 1
= n + 1
= OSCCLK * Km/Kn
= m + 1
= n + 1
= 27 MHz
0100: 50
0101: 49.5
0110: 56.25
0111: 44.9
Video Downscaler Coefficient Register (R/W)
Video Downscaler Control Register (R/W)
1000: 65
1001: 75
1010: 78.5
1011: 94.5
Reserved
Reserved
Reserved
1100: 108
1101: 135
1110: 27
1111: 24.923052
32579B
Reset Value: 00000000h
Reset Value: 00000000h
Reset Value: 00000000h
Reset Value: 00000000h
Reset Value: 00000000h
343
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