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Datasheet

TDA9950
(Product Specification)
16-Nov-07, 24 pages, 113 kB

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General description

The TDA9950 is a single-chip CEC/I2C-bus translator with a processor, dedicated to the control and interfacing of the Consumer Electronics Control (CEC), a feature of the High-Definition Multimedia Interface (HDMI).

The TDA9950 is an interface between the CEC protocol and timings and the standard I2C-bus. A message received on the I2C-bus interface is written in a buffer and sent on the CEC line. A message received from the CEC line is stored in a buffer, and an interrupt is generated indicating that a message can be read via the I2C-bus. To reduce its power consumption the TDA9950 sets itself to Idle mode when there is no message on the CEC line nor on the I2C-bus.

Features

Principal features

  • Receive and transmit CEC messages with compliant Signal Free Time handling
  • I2C-bus interface to host supporting 100 kbit/s and 400 kbit/s communication
  • Supports multiple CEC logical addresses
  • Supports CEC messages up to 16 bytes in length
  • Programmable retry count
  • Comprehensive arbitration and collision handling
  • 3.0 V to 3.6 V VDD operating range
  • Automatic Idle mode to reduce power consumption when there is no message on CEC line and I2C-bus
  • I/O pins are 5 V tolerant

Additional features

  • Processor with embedded software to control the interface between CEC line and I2C-bus
  • Active-LOW reset input and on-chip power-on reset allows operation without external reset components. A reset counter and reset glitch suppression circuitry prevent spurious and incomplete resets.
  • On-chip oscillator for 12 MHz crystal
  • Schmitt trigger port inputs

Products/packages

Type numberNorth American Type numberOrdering code (12NC)Product statusPackagePackingMarkingChemical contentLeadfree conversion date
TDA9950TT/C2TDA9950TT/C29352 854 49512Volume productionSOT360-1
(TSSOP20)
Tube Dry PackStandard MarkingNot available
TDA9950TT/C2TDA9950TT/C2-T9352 854 49518Volume productionSOT360-1
(TSSOP20)
Reel Dry Pack, SMD, 13"Standard MarkingNot available
TDA9951TT/C19352 864 26518Volume productionSOT361-1
(TSSOP28)
Reel Dry Pack, SMD, 13"Standard MarkingTDA9951TT/C1

Pricing/ordering/availability

Type numberOrdering code(12NC)Indicative price/unit($)RegionDistributorIn stockInventory dateBuy onlineSamples
TDA9950TT/C29352 854  49512       not available
TDA9950TT/C29352 854  49518       not available
TDA9951TT/C19352 864  26518        Order samples

Applications

  • All devices using an HDMI connector
  • YCBCR or RGB high-speed video digitizer
  • Projector, plasma and LCD TV
  • Rear-projection TV
  • High-end TV
  • Home-theater amplifier
  • DVD recorder

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