Boot Enable; Load Out (Spi-Master: Ss0-); Data Out (Spi-Master: Ss1-); Data In (Spi: Miso) - DEUTSCHMANN AUTOMATION UNIGATE IC2 - Fast Ethernet Instruction Manual

Deutschmann Automation GmbH & Co. KG
28 IN
Logic
29 IN
Logic
30 OUT
Logic
31 OUT
Logic
32* GND
The Ethernet signals are galvanically isolated. The insulation voltage is 1000 Vrms.
IN
Reset
IN
Logic
Out
3.2.1

-Boot enable

The IC2 is started in the firmware update mode with the level GND during the power up process.
See also chapter 11.
3.2.2

Load out (SPI-Master: SS0-)

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.
In SPI mode this Pin serves as a low-active Slave-Select-Signal.
3.2.3

Data out (SPI-Master: SS1-)

On this line data is output on the synchronous serial interface. The most significant bit of the data
is output first.
In SPI mode this Pin serves as a low-active Slave-Select-Signal.
3.2.4

Data In (SPI: MISO)

Data is read in on the synchronous serial interface via this signal. The most significant bit of the
data is expected first.
In SPI mode this Pin serves as data transfer from Slave to Master.
3.2.5

Load In (SPI: MOSI)

This pin is the strobe signal for the input data of the synchronous serial interface.
In SPI mode this Pin serves as data transfer Master to Slave.
3.2.6

Clock (SPI: SCK)

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 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 interferences (see chapter
3.6).
•
If the customer's application has to initiate a reset of the UNIGATE
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 µs.
3.4.20
DbgRX serial Debug RX
RX serial data RX
TX serial data TX
TE transmit enable
GND ground supply voltage of the IC2
V
IL
< 0,7V / 0,5mA
< 1V / 5µA
V
OL
< 0,45V / 4mA
Instruction manual UNIGATE
V
IH
>2,3V / 5µA
>2,3V / 5µA
V
OH
> 2,8V / 4mA
®
IC2, then the reset input
®
IC2 - Fast Ethernet V. 1.2
Hardware design
internally pulled up with 10
k
internally pulled up with 10
k
14