Rainbow Electronics AT91CAP9S250A - Manual (Page 42)

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6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
10.4.7 Pulse Width Modulation Controller
• 4 channels, one 16-bit counter per channel
• Common clock generator, providing Thirteen Different Clocks
– A Modulo n counter providing eleven clocks
– Two independent Linear Dividers working on modulo n counter outputs
• Independent channel programming
– Independent Enable Disable Commands
– Independent Clock Selection
– Independent Period and Duty Cycle, with Double Bufferization
– Programmable selection of the output waveform polarity
– Programmable center or left aligned output waveform
10.4.8 Multimedia Card Interface
• 2 double-channel Multimedia Card Interface, allowing concurrent transfers with 2 cards
• Compatibility with MultiMedia Card Specification Version 3.31
• Compatibility with SD Memory Card Specification Version 1.0
• Compatibility with SDIO Specification Version V1.0.
• Cards clock rate up to Master Clock divided by 2
• Embedded power management to slow down clock rate when not used
• Each MCI has one slot supporting
– One MultiMediaCard bus (up to 30 cards) or
– One SD Memory Card
– One SDIO Card
• Support for stream, block and multi-block data read and write
10.4.9 CAN Controller
• Fully compliant with 16-mailbox CAN 2.0A and 2.0B CAN Controllers
• Bit rates up to 1Mbit/s.
• Object-oriented mailboxes, each with the following properties:
– CAN Specification 2.0 Part A or 2.0 Part B Programmable for Each Message
– Object Configurable as receive (with overwrite or not) or transmit
– Local Tag and Mask Filters up to 29-bit Identifier/Channel
– 32 bits access to Data registers for each mailbox data object
– Uses a 16-bit time stamp on receive and transmit message
– Hardware concatenation of ID unmasked bitfields to speedup family ID processing
– 16-bit internal timer for Time Stamping and Network synchronization
– Programmable reception buffer length up to 16 mailbox object
– Priority Management between transmission mailboxes
– Autobaud and listening mode
– Low power mode and programmable wake-up on bus activity or by the application
– Data, Remote, Error and Overload Frame handling