BECKHOFF ET1200 - Manual (Page 3)

DOCUMENT HISTORY
Slave Controller – ET1200 Hardware Description III-III
DOCUMENT HISTORY
Version Comment
0.1 Initial release
0.2 Editorial changes
0.3 Register overview, PDI, Electrical and mechanical spec
0.4 Abbreviations, editorial changes
0.5

Removed RJ45 description (will become part of Section I)

EEPROM_LOADED pull-down resistor recommendation added

Frame processing order example corrected

I 2 C EEPROM interface description added

MII management interface description added

Corrected Process RAM size in Register Overview

Revision/Build information added

Recommendations for unused input pins added (should not be left open)

EEPROM_SIZE description corrected from Kbyte to Kbit, possible EEPROM
sizes range from 16 Kbit to 4 Mbit

RoHS compliance added

Autonegotiation is mandatory for ESCs

Description of power supply options added

Electrical characteristics added

SPI_IRQ delay added

TX Shift timing diagram and description added

Pin overview table corrected

Internal 27 k Ω PU/PD resistors at EBUS-RX pins added

LED polarity depending on configuration pin setting described

Recommendation for voltage stabilization capacitors added

Description of Digital I/O behavior on watchdog expiration enhanced

EBUS ports are open failsafe

Reset example schematic added

Ethernet PHY requirements and PHY connection schematic added

MI_DATA pull-up requirement added

Editorial changes
1.0

RUN, LINKACT/x) and PERR(x) LED activity level corrected: active high if
pulled down, active low if pulled up

TX Shift description: timing figures corrected, minor changes, moved to MII
Interface chapter

Pin/Signal description overview added

PERR(x) LEDs are only for testing/debugging

Electrical characteristics enhanced

DC Characteristics enhanced: added V
Reset Core
, V
ID
, V
IC

Digital I/O and SPI timing characteristics revised

DC SYNC/LATCH signal description and timing characteristics added

MII Interface chapter and MII timing characteristics added

EBUS Interface chapter added

PHY requirements, EEPROM Interface description and MII Management
Interface description moved to Section I

Ambient temperature range instead of junction temperature range

Editorial changes