CS4954/55 NTSC/PAL Digital Video Encoders
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01 CS4954 CS4955 'CIRRUS LOGIC' NTSC/PAL Digital Video Encoder Features Six DACs providing simultaneous composite,S-video, and RGB or Component YUV outputs Օ Programmable DAC output currents for low impedance (37.5 Q) and high impedance (150 Q) loads Multi-standard support for NTSC-M, NTSC-JAPAN, PAL (B, D, G, H, I, M, N, Combination N) Օ ITU R.BT656 input mode supporting EAV/SAV codes and CCIR601 Master/Slave input modes Programmable HSYNC and VSYNC timing Օ Multistandard Teletext (Europe, NABTS, WST) support VBI encoding support Օ Wide-Screen Signaling (WSS) support, EIA-J CPX1204 NTSC closed caption encoder with interrupt Օ CS4955 supports Macrovision copy protection Version 7 Host interface configurable for parallel or PC® compatible Description The CS4954/5 provides full conversion from digital video formats YCbCr or YUV to NTSC and PAL Composite, Y/C (S-video) and RGB, or YUV analog video. Input forխmats can be 27 MHz 8-bit YUV, 8-bit YCbCr, or ITU R.BT656 with support for EAV/SAV codes. Video output can be formatted to be compatible with NTSC-M, NTSC-J, PAL-B,D,G,H,I,M,N, and Combination N systems. Closed Caption is supported in NTSC. Teletext is sup-ported for NTSC and PAL. Six 10-bit DACs provide two channels for an S-Video output port, one or two composite video outputs, and three RGB or YUV outputs. Two-times oversampling reduces the output filter requirements and guarantees no DAC-related modulation components within the speci-fied bandwidth of any of the supported video standards. Parallel or high-speed I2C compatible control interfaces are provided for flexibility in system design. The parallel interface doubles as a general purpose I/O port when the CS4954/5 is in PC mode to help conserve valuable board area. The CS4954 and CS4955 are available in a 48-pin TQFP and operate in -40 to +85°C ambient temperature. The CDB4954/55 Customer Demonstration board is also available. Please refer to "Ordering Information" on page 2. _VAA_ operation ͕ On-chip voltage reference generator +3.3 V or +5 V operation, CMOS, low-power modes, CLK SCL SDA PDAT[7:0] RD WR PADR XTAL_IN XTAL_OUT PC Interface Control Registers Output I-aLPF InterpolateI \ T-_ Chroma Amplifier »-| Chroma Modulate C Host Parallel Interface CVBS Y R G B VREF ISET r1 i՗ 3 Burst Insert Color Sub-carrier Synthesizer I three-state DACs |Chroma Interpolate" TTXDAT TTXRQ Teletext Encoder YCbCr to RBG Color Space Converter La lJ" VD[7:0] HSYNC VSYNC FIELD INT RESET Video Formatter Yl-1 Luma Interpolate | | Luma Amplifier" Video Timing Generator _Y_ Sync Insert RGBL RGB Current I Reference f DGND TEST m CIRRUS LOGIC Copyright © Cirrus Logic, Inc. 2006 (All Rights Reserved) www.cirrus.com SEPTEMBER '06 DS278F6 1

CS4954 CS4955 ORDERING INFORMATION Product Description Package Pb-Free Grade Temp Range Container Order# CS4954 NTSC/PAL Digital Video Encoder 48-TQFP Yes Commercial -40° to +85°C Rail CS4954-CQZ CS4955 CS4955-CQZ CDB4954/55 CS4954/55 Evaluation Board No - - - CDB4954A/55A 2 DS278F6

CS4954 CS4955 1. CHARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS AC & DC PARAMETRIC SPECIFICATIONS (AGND,DGND = 0 V, all voltages with respect to 0 V) Parameter Symbol Min Max Units Power Supply VAA/VDD -0.3 6.0 V Input Current Per Pin (Except Supply Pins) -10 10 mA Output Current Per Pin (Except Supply Pins) -50 +50 mA Analog Input Voltage -0.3 VAA + 0.3 V Digital Input Voltage -0.3 VDD + 0.3 V Ambient Temperature Power Applied -55 + 125 °C Storage Temperature -65 + 150 °C WARNING: Operating beyond these limits can result in permanent damage to the device. Normal operation is...

CS4954 CS4955 Parameter Symbol Min Typ Max Units Low Level Output Voltage SDA pin only, lo = 6mA VOL - - 0.4 V Output Leakage Current High-Z Digital Outputs - -10 - +10 uA Analog Outputs Full Scale Output Current CVBS/Y/C/R/G/B (Notes 1, 2, 3) IO 32.9 34.7 36.5 mA Full Scale Output Current CVBS/Y/C/R/G/B (Notes 1, 2, 4) IO 8.22 8.68 9.13 mA LSB Current CVBS/Y/C/R/G/B (Notes 1, 2, 3) IB 32.2 33.9 35.7 uA LSB Current CVBS/Y/C/R/G/B (Notes 1, 2, 4) IB 8.04 8.48 8.92 uA DAC-to-DAC Matching (Note 1) MAT - 2 4 % Output Compliance (Note 1) VOC 0 - + 1.4 V Output Impedance (Note 1) ROUT - 15 - kQ...

CS4954 CS4955 AC CHARACTERISTICS Parameter Symbol Min Typ Max Units Pixel Input and Control Port (Figure 1 ) Clock Pulse High Time Tch 14.82 18.52 22.58 ns Clock Pulse Low Time Tcl 14.82 18.52 22.58 ns Clock to Data Set-up Time Tisu 6 - - ns Clock to Data Hold Time Tih 0 - - ns Clock to Data Output Delay Toa - - 17 ns CLK Tch Tcl Tih HSYNC/VSYNC (Inputs) X Toa H-H HSYNC/VSYNC " CB/FIELD(1)/INT. (Outputs) Figure 1. Video Pixel Data and Control Port Timing 8 DS278F6

CS4954 CS4955 TIMING CHARACTERISTICS Parameter Symbol Min Typ Max Units I2C Host Port Timing (Figure 2) SCL Frequency Fclk 1000 kHz Clock Pulse High Time Tsph 0.1 lis Clock Pulse Low Time Tspl 0.7 lis Hold Time (Start Cond.) Tsh 100 ns Setup Time (Start Cond.) Tssu 100 ns Data Setup Time Tsds 50 ns Rise Time Tsr 1 lis Fall Time Tsf 0.3 is Setup Time (Stop Cond.) Tss 100 ns Bus Free Time Tbuf 100 ns Data Hold Time Tdh 0 ns SCL Low to Data Out Valid Tvdo 600 ns DS278F6 9

CS4954 CS4955 TIMING CHARACTERISTICS(Continued) Parallel Host Port Timing (Figure 27, 28, 29) Symbol Min Typ Max Units Read Cycle Time Trd 60 - - ns Read Pulse Width Trpw 30 - - ns Address Setup Time Tas 3 - - ns Read Address Hold Time Trah 10 - - ns Read Data Access Time Trda - - 40 ns Read Data Hold Time Trdh 10 - 50 ns Write Recovery Time Twr 60 - - ns Write Pulse Width Twpw 40 - - ns Write Data Setup Time Twds 8 - - ns Write Data Hold Time Twdh 3 - - ns Write-Read/Read-Write Recovery Time Trec 50 - - ns Address from Write Hold Time Twac 0 - - ns Reset Timing (Figure 3) Reset Pulse Width...

CS4954 CS4955 2. ADDITIONAL CS4954/5 FEATURES Five programmable DAC output combinations, including YUV and second composite Օ Optional pseudo-progressive scan @ MPEG2 field rates Stable color subcarrier for MPEG2 systems Օ General purpose input and output pins Individual DAC power-down capability Օ On-chip color bar generator Supports RS170A and ITU R.BT601 composխite output timing HSYNC and VSYNC output in ITU R.BT656 mode Օ Teletext encoding selectable on two composite and S-video signals Programmable saturation, SCH Phase, hue, brightness and contrast Օ Device power-down capability...