Dual DP83640 Ethernet PHY HSMC Daughter Board
Reference Guide
V1.0 - October 2013
6
3 Board Description
3.1 Block Diagram
The Board implements the copper line interfaces using a 2x RJ45 array with integrated
magnetics. The MAC interfaces are available at the HSMC connector using 2.5V/3.3V
LVTTL/LVCMOS signaling.
1
HSMC Connector
National PHY1
DP83640
National PHY2
DP83640
RJ45
(integrated
Transformer)
General Purpose
Connector 5x2
C
on
ne
ctor 4x
2
RMII
C
on
ne
ctor 4x
2
Testsignals
Testsignals
PLCC-44
Socket
Optional
OTP Device
50MHz
RJ45
(integrated
Transformer)
25MHz
Refclk
3.3V
Power
Figure 2: Board Block Diagram