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TPD12S016PWR 数据表(PDF) 1 Page - Texas Instruments |
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TPD12S016PWR 数据表(HTML) 1 Page - Texas Instruments |
1 / 26 page TPD12S016 www.ti.com SLLSE96C – SEPTEMBER 2011 – REVISED JULY 2012 HDMI Companion Chip with I2C Level Shifting Buffer, 12 Channel ESD, and Current-Limit Load Switch Check for Samples: TPD12S016 1 FEATURES • Integrated Pull-up and Pull-down Resistors per HDMI Specification • Confirms to HDMI Compliance Tests without • ±8KV Contact Discharge Rating at all External any External Components Pins • Supports HDMI1.4 Data Rate • Space Saving 24-pin RKT Package and 24- • Match Class D and Class C Pin Mapping TSSOP Package • 8-Channel ESD Lines for Four Differential Pairs with Ultra-low Differential Capacitance APPLICATIONS Matching (0.05pF) • Cell Phones • On-chip Load Switch with 55mA Current Limit • eBook Feature at the HDMI 5V_OUT Pin • Portable Media Players • Auto-direction Sensing I2C Level Shifter with One-shot Circuit to Drive Long HDMI Cable • Set-top Box (750pF Load) • Back-drive Protection on HDMI Connector Side Ports DESCRIPTION The TPD12S016 is a single-chip HDMI interface device with auto-direction sensing I2C voltage level shift buffers, load switch, and integrated high-speed ESD protection clamps. The device pin mapping matches the HDMI Type D connector with four differential pairs. This device offers eight low-capacitance ESD clamps, allowing HDMI 1.4 data rates. The integrated ESD circuits provide good matching between each differential signal pair, which allows an advantage over discrete ESD solutions where variations between ESD protection clamps degrade the differential signal quality. The TPD12S016 provides a current limited 5 V output (5V_OUT) for sourcing the HDMI power line. The current limited 5 V output supplies up to 55 mA to the HDMI receiver. The control of 5V_OUT and the hot plug detect (HPD) circuitry is independent of the LS_OE control signal, and is controlled by the CT_HPD pin. This independent CT_HPD control enables the detection scheme (5V_OUT and HPD) to be active before enabling the HDMI link. An internal 3.3V node powers the CEC pin eliminating the need for a 3.3V supply on board. The TPD12S016 integrates all the external termination resistors at the HPD, CEC, SCL, and SDA lines. There are three non-inverting bi-directional translation circuits for the SDA, SCL, and CEC lines. Each have a common power rail (VCCA) on the A side from 1.1 V to 3.6V. On the B side, the SCL_B and SDA_B each have an internal 1.75 k Ω pull up connected to the 5 V rail (5V_OUT). The SCL and SDA pins meet the I2C specification and drive up to 750 pF capacitive loads exceeding the HDMI1.4 specifications. The CEC_B pin has an internal 27 k Ω pull up to the internal 3.3 V supply rail. The HPD_B port has a glitch filter to avoid false detection due to plug bouncing during the HDMI connector insertion. The TPD12S016 offers reverse current block feature at the 5V_OUT pin. In the fault conditions, such as when two HDMI transmitters connect to the same HDMI cable, the TPD12S016 ensures that the system is safe from powering up through external HDMI transmitter. The Dx, CLKx, SCL_B, SDA_B, CEC_B pins also feature reverse-current blocking when the system is powered off. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2011–2012, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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