Common Interface has two logical interfaces, to be included on the same physical interface. The first interface is the MPEG-2 Transport Stream Interface as defined in the MPEG-2 specifications. The second interface, the Command Interface, carries commands between the host and the CAM.
- The CI Software allows implementation of Command Interface, which includes:
- - CAM configuration
- - Exchange of commands between STB and Conditional Access Module (CAM).
- A DVB PCI card or DVB set-top-box (STB) consists of the following main hardware components:
- - Front-end consisting of tuner and DVB demodulator
- - The front-end down-converts and demodulates this signal into an MPEG transport stream (TS).
- - Conditional Access (CA) hardware like CI adapters and smart card slots
- - The complete TS is passed through the CA hardware. Programs to which the user has access (controlled by the smart card) are decoded in real time and re-inserted into the TS.
- - De-multiplexer, which filters the incoming DVB stream
- - MPEG2 audio and video decoder
- - The main targets of the de-multiplexer are the MPEG2 audio and video decoders.
- May use GPIO, I2C, STARWIN, EPLD or any new interface for CI control signals.
- Supports (and auto-detects) CI and CI+ CAMs
- Supports blocking data transfers only between CAM and host (I/O mode access)
- Event supported for hot plugin for CI and CI+ CAMs
- Event supported for notifying CAM’s status register IIR bit is set for CI+ CAMs only
- CAM Initialization: This includes CAM configuration and link initialization using link reset
- CAM detection
- Supplying power supply to CAM
- CAM hard reset
- Retrieving the card information structure (CIS) (Attribute memory access)
- Set config option register (COR) to configure the CAM in normal operating mode.
- CAM and host link initialization to negotiate the buffer size to be used for communication.
- Extracted for a production STB chipset
- Source Code Delivery including
- Unlimited Usage
- Rights to Modify
- Product datasheet
- Test cases