Boot Enable; Load Out; Data Out; Data In - DEUTSCHMANN AUTOMATION UNIGATE IC DeviceNet Instruction Manual

Deutschmann Automation GmbH & Co. KG
3.2.1

-Boot enable

The IC is started in the firmware update mode with the level GND during the power up process.
See also chapter 11 on page 30.
3.2.2

Load out

Strobe signal for the synchronous serial interface. With the positive edge at this output data is
taken from the connected shift registers to the physical outputs.
3.2.3

Data out

On this line data is output on the synchronous serial interface. The most significant bit of the data
is output first.
3.2.4

Data In

Data is read in on the synchronous serial interface via this signal. The most significant bit of the
data is expected first.
3.2.5

Load In

This pin is the strobe signal for the input data of the synchronous serial interface.
3.2.6

Clock

This signal is the clock line for the synchronous serial interface. That signal is equally valid for
data input and data output.
3.2.7

-Reset In

A reset generator (Max 809) is on board; with it in the normal case the reset input is not
•
required. In this case the reset input has to be connected with VCC, in order to avoid interfe-
rences (see chapter 3.6).
• If the the customer's application has to initiate a reset of the UNIGATE® IC, then the reset input
can also be connected with a reset output of the customer's application instead of connecting it
with VCC. Here all specifications of the reset signal, mentioned in chapter 3.2 have to be kept.
The reset-impulse is supposed to last at least 10 ms.
3.2.8

LED-DN

A green LED can be connected to this wire from hardware revision C (lower board) or Rev. -
(DNL-hardware / single-board solution) (see chapter 3.6). This LED flashes in the state "Bus ok,
not allocated" and shines shines in the state "Allocated".
-> This LED can not be used in case of RS485-operation.
3.2.9

-Config Mode

If the pin has the level GND, then the IC starts in the configuration mode.
3.2.10

DbgTX, DbgRX

They are transmission line (Tx) and receive line (Rx) as well of the IC's Debug-interface. For the
function description of the Debug-interface see chapter 6 on page 22.
3.2.11 TE
The transmit enable signal allows the connection of RS485 drivers to the IC's serial interface.
The signal is set to 5V whenever the IC sends via the line TX.
7.10.10 Instruction manual UNIGATE
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IC - DeviceNet V. 2.7
Hardware design
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