Samsung DCB-P850Z, Service Manual

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Circuit Operating Descriptions
Samsung Electronics 13-11
13-3-9 Internal peripherals
The STi5100 has many dedicated internal peripherals for digital TV receiver Applications.
• 2 smartcard controllers,
• 4 ASCs (UARTs), two of which are generally used by the smartcard controllers,
• Teletext serializer and DMA,
• 3 SSCs for I2C master/slave interfaces, with SPI support,
• 4.5 GPIO ports, with a further 1.5 ports mapped to transport pins,
• 1 PWM module,
• A multichannel, infrared blaster/decoder interface module,
• A modem analog front-end interface (MAFE),
• DVB common interface support,
• CableCard support,
• Fully integrated digital clock recovery for MPEG (replacement for VCXO),
• USB 2.0 host, OHCI/EHCI compliant,
• DiSEqC. 2.0 control support, interface to STMicroelectronics LNBP21 PSU controller or a
discrete external solution,
• Interface to SiLabs line side device (DAA),
• An interrupt level controller,
• A low-power/RTC/watchdog controller,
• DCU toolset support,
• A JTAG/TAP interface.