BECKHOFF ET1200 - Manual (Page 6)

CONTENTS
III-VI Slave Controller – ET1200 Hardware Description
5 EBUS/LVDS Interface 28
5.1 EBUS Interface Signals 28
6 PDI Description 29
6.1 PDI Deactivated 29
6.2 Digital I/O Interface 30
6.2.1 Interface 30
6.2.2 Configuration 30
6.2.3 Digital Inputs 30
6.2.4 Digital Outputs 31
6.2.5 Bidirectional mode 32
6.2.6 Output Driver 32
6.2.7 SyncManager Watchdog 32
6.2.8 SOF 33
6.2.9 OUTVALID 33
6.2.10 Timing specifications 33
6.3 SPI Slave Interface 35
6.3.1 Interface 35
6.3.2 Configuration 35
6.3.3 SPI access 35
6.3.4 Commands 36
6.3.5 Address modes 36
6.3.6 Interrupt request register (AL Event register) 36
6.3.7 Write access 37
6.3.8 Read access 37
6.3.9 SPI access errors and SPI status flag 37
6.3.10 EEPROM_LOADED 37
6.3.11 Timing specifications 38
7 Distributed Clocks SYNC/LATCH Signals 43
7.1 Signals 43
7.2 Timing specifications 43
8 SII EEPROM Interface (I²C) 44
8.1 Signals 44
8.2 Timing specifications 44
9 Example Schematics 45
9.1 Clock Adoption 45
9.2 Power supply 46
9.3 Dual purpose configuration input/LED output pins 47
9.4 PHY Connection 47
9.5 LVDS termination 48
9.6 RBIAS resistor 48
9.7 Reset Logic 48