User manual TEXAS INSTRUMENTS TVP5151 DATA MANUAL REV B

[. . . ] TVP5151 Ultralow-Power NTSC/PAL/SECAM Video Decoder Data Manual PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Literature Number: SLES241B September 2009 ­ Revised June 2010 TVP5151 SLES241B ­ SEPTEMBER 2009 ­ REVISED JUNE 2010 www. ti. com Contents 1 2 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1. 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The horizontal AVID cropping is controlled using registers 11h and 12h for start pixels MSB and LSB, respectively. Registers 13h and 14h provide access to stop pixels MSB and LSB, respectively. The vertical AVID cropping is controlled using the vertical blanking (VBLK) start and stop registers at addresses 18h and 19h. Figure 3-7 shows an AVID application. 22 Functional Description Submit Documentation Feedback Copyright © 2009­2010, Texas Instruments Incorporated TVP5151 www. ti. com SLES241B ­ SEPTEMBER 2009 ­ REVISED JUNE 2010 VBLK Stop Active Video Area AVID Cropped Area VBLK Start AVID Start AVID Stop HSYNC VSYNC Figure 3-7. AVID Application 3. 14 Embedded Syncs Standards with embedded syncs insert SAV and EAV codes into the datastream at the beginning and end of horizontal blanking. These codes contain the V and F bits that also define vertical timing. The alignment of V and F to the line and field counter varies depending on the standard. The P bits are protection bits: P3 = V xor H P2 = F xor H P1 = F xor V P0 = F xor V xor H Table 3-4. EAV and SAV Sequence 8-BIT DATA D7 (MSB) Preamble Preamble Preamble Status word 1 0 0 1 D6 1 0 0 F D5 1 0 0 V D4 1 0 0 H D3 1 0 0 P3 D2 1 0 0 P2 D1 1 0 0 P1 D0 1 0 0 P0 Copyright © 2009­2010, Texas Instruments Incorporated Functional Description Submit Documentation Feedback 23 TVP5151 SLES241B ­ SEPTEMBER 2009 ­ REVISED JUNE 2010 www. ti. com 3. 15 I2C Host Interface The I2C standard consists of two signals, serial input/output data line (SDA) and input/output clock line (SCL), which carry information between the devices connected to the bus. Although the I2C system can be multimastered, the TVP5151 decoder functions only as a slave device. Both SDA and SCL must be connected to a positive supply voltage via a pullup resistor. The slave address select terminal (I2CSEL) enables the use of two TVP5151 decoders tied to the same I2C bus. Depending on the write and read addresses to be used for the TVP5151 decoder, it can either be pulled low or high through a resistor. This terminal is multiplexed with YOUT7 and hence must not be tied directly to ground or IO_DVDD. Table 3-6 summarizes the terminal functions of the I2C-mode host interface. Write Address Selection I2CSEL 0 1 WRITE ADDRESS B8h BAh Table 3-6. I2C Terminal Description SIGNAL I2CSEL (YOUT7) SCL SDA TYPE I I/O (open drain) I/O (open drain) DESCRIPTION Slave address selection Input/output clock line Input/output data line Data transfer rate on the bus is up to 400 kbit/s. The number of interfaces connected to the bus is dependent on the bus capacitance limit of 400 pF. The data on the SDA line must be stable during the high period of the SCL except for start and stop conditions. The high or low state of the data line can only change with the clock signal on the SCL line being low. A high-to-low transition on the SDA line while the SCL is high indicates an I2C start condition. A low-to-high transition on the SDA line while the SCL is high indicates an I2C stop condition. [. . . ] TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. Addendum-Page 1 PACKAGE OPTION ADDENDUM www. ti. com 23-Mar-2010 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. [. . . ]