hdlc mcu
ARM7 STR7 32-bit Microcontroller Family
http://mcu.st.com/mcu/inchtml.php?fdir=pages&fnam=str7
http://mcu.st.com/mcu/modules.php?name=mcu&file=pfinder&FAM=ARM7
- Automatic flag detection and insertion
- Automatic zero bit deletion and insertion
- Automatic Frame Check Sequence (FCS) generation and check (CRCCCITT)
- Abort detection and transmission
- Idle detection and transmission
- 32 Maskable Private Address bits field recognition
- 4 single byte Maskable Group Address field recognition
- Check of the integer number of bytes received in a frame
- Up to 16-bit programmable preamble sequence
- Up to 16-bit programmable postamble sequence
- Two independent input clock lines (one in reception and one in transmission)
- NRZ,NRZI,FM0 and MANCHESTER modes both RX/TX
- Digital Phase Locked Loop (DPLL) for clock recovery
- Capability to complement input/ouput frame.
- Local loopback mode
- Autoecho mode
- Full Duplex operating mode
- Interrupt operating mode
- 2x128 byte RAM buffers for transmission and reception