BECKHOFF ET1200 - Manual (Page 10)

ABBREVIATIONS
III-X Slave Controller – ET1200 Hardware Description
ABBREVIATIONS
(x)
Logical Port x
[z] Bit z
{y} Physical Port y
µC Microcontroller
ADR Address
AL Application Layer
BD Bidirectional
BHE Bus High Enable
CMD Command
DC Distributed Clock
Dir. Pin direction
DL Data Link Layer
ECAT EtherCAT
EMC Electromagnetic Compatibility
EMI Electromagnetic Interference
EOF End of Frame
EP Exposed Pad
ESC EtherCAT Slave Controller
ESI EtherCAT Slave Information
FMMU Fieldbus Memory Management Unit
GPI General Purpose Input
GPO General Purpose Output
I Input
I/O Input or Output
IRQ Interrupt Request
LDO Low Drop-Out regulator
LI- LVDS RX-
LI+ LVDS RX+
LO- LVDS TX-
LO+ LVDS TX+
MAC Media Access Controller
MDIO Management Data Input / Output
MI (PHY) Management Interface
MII Media Independent Interface
MISO Master In – Slave Out
MOSI Master Out – Slave In
n.a. not available
n.c. not connected
O Output
PD Pull-down
PDI Process Data Interface
PLL Phase Locked Loop
PU Pull-up
QFN Quad Flat package No leads
SII Slave Information Interface
SM SyncManager
SOF Start of Frame
SPI Serial Peripheral Interface
UI Unused Input (PDI: PD, others: GND)
WD Watchdog
WPD Weak Pull-down, sufficient only for configuration signals
WPU Weak Pull-up, sufficient only for configuration signals