Features
- up to 2048 I/O Pins
- I/O pin read and writes optimized for software bit-bang
- all memory accesses are on 32 bit boundaries
- output value can be bit 0, 7, 15 or 31 (assistance for software shift operations)
- output value can optionally be inverted
- tri-state control and output holding registers are treated the same
- tri-state control and output holding registers can be updated separately or with one write operation
- tri-state control and output holding registers can be read back
- I/O pin input "high" can be read as bit 0, 7, 15 or 31, or as 0xFFFFFFFF
- I/O pin input value can be optionally inverted
- Virtual I/O Pins
- access similar to physical I/P Pins
- optional read only access to TMS, TCK, TDI pins
- optional access to DNA primitive pins
- access to LED's pins
- optional LED'S output port (maximum 32 LED's)
- all LED's accessible with single 32 bit write
- accessible as single bit I/O as well
- output polarity can be defined for each LED
- output value when RESET is asserted can be defined for each LED
Overview
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