The EtherCAT SubordinateDevice Controller
SubSystem (ESCSS) wraps the ESC core with required register configurations and
required logic for different functions of the EtherCAT and RAM (ESC RAM). This
section covers the ESCSS integration aspects. Figure 35-9 shows the EtherCAT subsystem Integration.
- ESCSS configuration registers interface
is the port for accessing the critical device level configurations which are a
must have for the ESCSS to function.
- ESCSS register interface has control and
status registers including SYNC, LATCH configurations, interrupt related
controls, and GPIO related controls.
- PDI Async interface is a 16-bit wide data
interface that allows the local application to access the registers internal to
the EtherCAT IP Core as well as the dual-port memory (ESC RAM) through the
SyncManager and the FMMUs.