參數(shù)資料
型號: FS451
廠商: Electronic Theatre Controls, Inc.
英文描述: i-Net TV Interface Video Processor
中文描述: 一至網(wǎng)絡(luò)電視接口視頻處理器
文件頁數(shù): 26/60頁
文件大小: 266K
代理商: FS451
FS450, FS451
PRELIMINARY PRODUCT DESCRIPTION
JUNE, 2000, VERSION 1.2
26
COPYRIGHT
ó
1999, 2000 FOCUS ENHANCEMENTS, INC.
PRELIMINARY INFORMATION
6.2.8 NCON - Numerator of NCO Word
Numerator of NCO Word (10)
7
6
5
4
3
2
1
0
NCON
7
NCON
6
NCON
5
NCON
4
NCON
3
NCON
2
NCON
1
NCON
0
Numerator of NCO Word (11)
7
6
5
4
3
2
1
0
NCON
15
NCON
14
NCON
13
NCON
12
NCON
11
NCON
10
NCON
9
NCON
8
Numerator of NCO Word (12)
7
6
5
4
3
2
1
0
NCON
23
NCON
22
NCON
21
NCON
20
NCON
19
NCON
18
NCON
17
NCON
16
Numerator of NCO Word (13)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
Reg
Bit#
Bit Name
Description
12, 11, 10
7-0,7-0,7-0
NCON
23-0
Numerator of NCO Word [23:0].
Numerator of clock synthesizer
to generate VGA input clock. NCON is a 24 bit unsigned number.
Range:
{0 : NCOD/2}
The FS450 synthesizes a 27-85 MHz clock from the 27 MHz TV_CKIN and supplies this clock
(VGA_CKOUT) to the GCC. This clock is buffered and returned to the FS450 (VGA_CKIN) synchronous to
the RGB data and Sync information. This clock has a 1.5 Hz resolution and can be adjusted so the VGA
scaled input data rate exactly matches the CCIR 656 data output rate.
Frequency VGA / Frequency 656 = # VGA Pixels / # 656 Pixels x # VGA Lines / # 656 Lines
Frequency VGA / Frequency 656 = NCON / NCOD x M / N
Example: for SVGA mode, typ. total pixels x lines ~ 1024 x 625; let M=512, N=128:
NTSC and PAL: NCON = 1024 x 625 = 640,000
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