Application Information

The TPMC117 is a standard single-width 32 bit PMC

module and offers six independent channels. Each of

these channels can operate as a standard SSI interface

controller, in a SSI ‘Listen only’ Mode, as an incremental

encoder or general purpose counter.

The standard SSI interface controller outputs a clock burst

to the absolute encoder and receives the returned

positional data. The SSI interface controller operates with

a programmable clock rate from 1µs to 15µs and

programmable data word length from 1 bit to 32 bit.

In ‘Listen only’ Mode the channel listens to an existing SSI

interface to observe its data transfer. It takes both the SSI

clock and data as inputs. In ‘Listen only’ Mode the channel

also has a programmable data word length from 1 bit to 32

bit; the SSI clock rate of the observed SSI interface can be

in the range of 1µs to 15µs.

In both modes the data word can be encoded in Binary- or

in Gray code and with odd, even or no parity.