PDF TMC2272A Data sheet ( Hoja de datos )

Número de pieza	TMC2272A
Descripción	Digital Colorspace Converter
Fabricantes	Fairchild Semiconductor
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No Preview Available ! www.DataSheet4U.net TMC2272A Digital Colorspace Converter 36 Bit Color, 50 MHz www.fairchildsemi.com Features • 50 MHz (20ns) pipelined throughput • 3 Simultaneous 12-bit input and output channels (64 Giga {236} colors) • Two's complement inputs and outputs • Overﬂow headroom available in lower resolution • 10-bit user-deﬁned coefﬁcients • TTL compatible input and output signals • Full precision internal calculation • Output rounding • On-board coefﬁcient memory • Submicron CMOS process Applications • Translation between component color standards (RGB, YIQ, YUV, etc.) • Broadcast composite color encoding and decoding (all standards) • Broadcast composite color standards conversion and transcoding • Camera tube and monitor phosphor colorimetry correction • White balancing and color-temperature conversion • Image capture, processing and storage • Color matching between systems, cameras and monitors • Three-dimensional perspective translation Description A 50-MHz, three-channel, 36 bit (three 12-bit components) colorspace converter and color corrector, the TMC2272A uses 9 parallel multipliers to process high-resolution imagery in real time. The TMC2272A also operates at any slower clock rate and with any smaller data path width, allowing it to handle all broadcast and consumer camera, frame-grabber, encoder/ decoder, recorder and monitor applications as well as most electronic imaging applications. A complete set of three 12-bit samples is processed on every clock cycle, with a five-cycle pipeline latency. Full 23-bit (for each of three components) internal precision is provided with 10-bit user-defined coefficients. The coefficients may be varied dynamically, with three new coefficients loaded every clock cycle. (The full set of nine can be replaced in three clock cycles.) Rounding to 12 bits per component is performed only at the final output. This allows full accuracy with correct rounding and overflow headroom for applications that require less than 12 bits per component. The TMC2272A is fabricated in a submicron CMOS process and performance is guaranteed over the full operating tem- perature range. It is available in a 120-pin Plastic Pin Grid Array (PPGA) package, 120-pin Ceramic Pin Grid Array (CPGA), 120-pin MQFP to PGA package, and 120-pin Plastic Quad FlatPack (PQFP) in three speed grades. Logic Symbol CLK A11-0 B11-0 C11-0 KA11-0 KB11-0 KC11-0 CSEL1-0 TMC2272A Colorspace Converter X11-0 Y11-0 Z11-0 REV. 1.1.3 10/25/00 1 page www.DataSheet4U.net TMC2272A PRODUCT SPECIFICATION Pin Descriptions (continued) Pin Name Inputs A11-0 B11-0 C11-0 KA9-0 KB9-0 KC9-0 Outputs X11-0 Y11-0 Z11-0 CPGA/PPGA/ MPGA KE Pin Number Pin Number E11, D13, E12, E13, F11, F12, F13, G13, G11, G12, H13, H12 B10, A11, B11, C10, A12, B12, C11, A13, C12, B13, C13, D12 A5, C6, B6, A6, A7, B7, A8, B8, A9, B9, A10, C9 K13, J11, K12, L13, L12, K11, M13, M12, L11, N13 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73 97, 96, 95, 94, 93, 92, 91, 90, 89, 87, 86, 85 111, 110, 109, 108, 107, 105, 104, 103, 101, 100, 99, 98 69, 68, 67, 66, 65, 64, 63, 62, 61, 60 M11, L10, N12, 59, 58, 57, 56, N11, M10, L9, 55, 54, 53, 52, N10, M9, N9, L8 51, 50 M8, N8, N7, M7, 49, 48, 47, 45, N6, M6, N5, M5, 44, 43, 41, 40, N4, L5 39, 38 B4, A3, A2, B3, 115, 116, 117, A1, C3, B2, B1, 119, 120, 1, 2, 3, D3, C2, C1, D2 4, 5, 6, 7 D1, E2, E1, F2, 9, 10, 11, 13, 14, F1, G2, G1, H1, 15, 17, 18, 23, K1, J2, J1, H2 22, 21, 19 M4, N3, M3, N2, 37, 36, 35, 33, M2, L3, N1, L2, 32, 31, 30, 29, K3, M1, L1, K2 28, 27, 26, 25 Pin Function Description Data Input A. This is one of three 12-bit wide data input ports. Data Input B. This is one of three 12-bit wide data input ports. Data Input C. This is one of three 12-bit wide data input ports. Coefficient Input KAX, KAY, or KAZ. These are the 10-bit wide coefficient input ports. The value at each of these three inputs will update one coefficient register as selected by the coefficient write select (CWSEL1-0) on the next clock. See Table 1 and the Functional Block Diagram. Coefficient Input KBX, KBY, OR KBZ. These are the 10-bit wide coefficient input ports. The value at each of these three inputs will update one coefficient register as selected by the coefficient write select (CWSEL1-0) on the next clock. See Table 1 and the Functional Block Diagram. Coefficient Input KCX, KCY, OR KCZ. These are the 10-bit wide coefficient input ports. The value at each of these three inputs will update one coefficient register as selected by the coefficient write select (CWSEL1-0) on the next clock. See Table 1 and the Functional Block Diagram. Output X. These are the data outputs. Data are available at the 12-bit registered Output Ports X,Y and Z tDO after every clock rising edge. Output Y. These are the data outputs. Data are available at the 12-bit registered Output Ports X,Y and Z tDO after every clock rising edge. Output Z. These are the data outputs. Data are available at the 12-bit registered Output Ports X,Y and Z tDO after every clock rising edge. Table 1. Coefﬁcient Loading Input Input Input KA9-0 KB9-0 KC9-0 00 Hold All Hold All Hold All CWSEL1,0 01 10 Load Load KAX KAY Load Load KBX KBY Load Load KCX KCY 11 Load KAZ Load KBZ Load KCZ REV. 1.1.3 10/25/00 5 5 Page www.DataSheet4U.net TMC2272A 128 (Y') = 258 (G) 102 +50 (B) 032 128 (U') = -149 (G) 36B +225 (B) 0E1 128l (V') = -188 (G) 344 -37 (B) 3DB If the TMC2272A input data alignment for 8-bit GBR is: 0 0 G7 G6 G5 G4 G3 G2 G1 0 0 B7 B6 B5 B4 B3 B2 B1 0 0 R7 R6 R5 R4 R3 R2 R1 then the output data alignment for 10-bit Y'U'V' is: 0 0 Y9 Y8 Y7 Y6 Y5 Y4 Y3 U9 U9 U9 U8 U7 U6 U5 U4 U3 V9 V9 V9 V8 V7 V6 V5 V4 V3 +131 (R) 083 -76 (R) 3B4 +225 (R) 0E1 G0 0 B0 0 R0 0 Y2 Y1 U2 U1 V2 V1 PRODUCT SPECIFICATION dec. hex dec hex dec. hex 0 0 0 Y0 U0 V0 where the tripled U9 and V9 sign bits denote two’s complement sign extensions. The factors of 4 in the input data format and 128 in the equations are absorbed by the internal 9-bit (factor of 512) right-shifting of the emerging results. At the output of the TMC2272A, invert the most signiﬁcant bits, U9 and V9, of the chrominance components, and add 1 at Y6 of the luminance to obtain the true CCIR Rec. 601 values. Converting from GBR to 8-bit Full-Scale YUV With the right coefﬁcients and two external NOT gates, the TMC2272A can convert video data from 8-bit full-scale (e.g. VGA) GBR components to 8-bit full-scale YUV components. Table 4. 8-bit component formats and inclusive ranges: Color Space Term Range Format Y Luminance 0-255 magnitude U Color difference, 128 to 2’s comp Blue -127 U' U + 128 0-255 magnitude V Color difference, Red 128 to 2’s comp -127 V' V + 128 0-255 magnitude G,B,R Green, Blue, Red components 0-255 magnitude As in the previous RGB to YCBCR case, begin with the deﬁning equations, but without the range compensation factors of 255/876 and 255/896: +0.2990 (R) Y = 0.5870 (G) +0.1140 (B) U = -0.3313 (G) +0.5000 (B) -0.1687 (R) +0.5000 (R) V = -0.4187 (G) -0.0813 (B) The TMC2272A will compute Y, U, and V directly, whereas inverting the most signiﬁcant bits of U and V, U7 and V7 will yield U' and V', respectively. Multiplying the equations immediately above by 512 and rounding each coefﬁcient to the nearest integer yields the recommended set of coefﬁ- cients for GBR to YUV conversion. REV. 1.1.3 10/25/00 11 11 Page

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