ZEUS Technical Manual

Detailed hardware description

 

 

Expander 2 - I2C Address 0x22

 

 

 

 

GPIO

Signal name

Dir

Active

Function

Power-up

 

 

state

See section…

0

CLK_SHDN#

Output

Low

Clock Synthesizer

PU

Clock generator power

Shutdown

management, page 72

 

 

 

 

 

 

1

LVDS_FES#

Output

Low

LVDS Falling Edge

PU

LVDS interface,

Strobe

page 47

 

 

 

 

 

 

2

CAN_SHDN

Output

High

CAN Transceiver

PU

CAN bus, page 57

shutdown

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

U1_RS232_SHDN#

Output

Low

COM1 RS232

PU

 

transceiver shutdown

COM Ports power

 

 

 

 

 

 

 

4

U2_RS232_SHDN#

Output

Low

COM2 RS232

PU

management, page 73

transceiver shutdown

 

 

 

 

 

 

COM3 RS485

 

COM3 –

5

U3_RS485_SLO#

Output

Low

transceiver slew rate

PU

RS232/RS485/RS422

 

 

 

 

 

control

 

interface, page 54

 

 

 

 

 

 

 

 

 

 

 

 

 

COM4 RS485

 

COM4 – RS422/485

6

U4_RS485_SLO#

Output

Low

transceiver slew rate

PU

interface, page 55

 

 

 

 

 

control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

NOT USED

 

 

 

PU

 

 

 

 

 

 

 

 

 

8-11

ISS [0-3]

Inputs

NA

PCB Issue Number

 

 

 

 

 

 

 

 

 

 

12-15

VER [0-3]

Inputs

NA

PCB Version Number

 

 

 

 

 

 

 

 

 

 

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