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5

Function

Outline

Power suply circuit

Input : 3.3V   for LVDS Driver/Reciever
output : 1.2V  for common mode voltage of reciever

Differencial Line driver/receiver

Conversion between the slave side differential signal and the digital signal on the CPU card side is 
performed.

Slave interface

There is RJ45 connector for every slave and it communicates by a LAN cable (straight). 
4 pair of a twisted pair signal is assigned to up:2 pair and down:2 pair.

6

RJ45 

port A

LVDS 

Driver #1 

C

P

U car

d

 i/f
 co
n

n

ecto

r

3.3V+

Down HW Data A

LVDS 

Receiver #1

Reference Clock A

Up HW Data A 

Frame Head B

Frame Head A

RJ45 

connector 

port B 

LVDS 

Driver #1 

Down HW Data B

LVDS 

Receiver #1

Reference Clock B

Up HW Data B 

Frame Head C 

RJ45 

port C

LVDS 

Driver #2 

Down HW Data C

LVDS 

Receiver #2

Reference Clock C

Up HW Data C 

LVDS 

Driver #2 

LVDS 

Receiver #2

R+

R+

1.2V+

connector

connector

7

8

A stacking card to be installed in a KX-NS300. Up to 3 expansion units can be connected.

Accessories (included): Screws x 3, slot cover x 1
User-supplied (not included): RJ45 connector, Twisted pair cable (maximum 3 m)

When installing or removing this card, the power switch must be turned off.

No.

Signal Name

Function

1

UHW+

Receive data +

2

UHW-

Receive data -

3

REFCLK+

Reference CLK +

4

FHCLK+

Frame and System CLK +

5

FHCLK-

Frame and System CLK -

6

REFCLK-

Reference CLK -

7

DHW+

Transmit data +

8

DHW-

Transmit data -

No.

descripitons

No.

descripitons

1

Digtal GND

30

Digtal GND

2

Card ID[0]

29

Card ID[1]

3

NC

28

NC

4

NC

27

NC

5

NC

26

NC

6

Digtal GND

25

Digtal GND

7

Up Highway data #2

24

Up Highway data #3

8

Reference clock #2

23

Reference clock #3

9

Down Highway data #2

22

Down Highway data #3

10

Digtal GND

21

Digtal GND

11

Up Highway data #0

20

Up Highway data #1

12

Reference clock #0

19

Reference clock #1

13

Down Highway data #0

18

Down Highway data #1

14

Frame Head signal (common)

17

+3.3V power supply

15

Digtal GND

16

Digtal GND

8

1