Laboratory Equipment and Quick Setup Evaluation
MC92604 Dual GEt Design Verification Board User’s Guide, Rev. 1
Freescale Semiconductor
3-3
3.2
Quick Setup Data-Eye Diagram
The MC92604DVB design evaluation kit comes equipped to immediately demonstrate two of the
MC92604 functions:
•
Data-eye signal generation and observation
•
Bit error rate checking using internal built-in self-test (BIST) features
3.2.1
Quick Setup Data-Eye Generation and Observation
A transmitted data-eye can be observed at either of the serial outputs of the MC92604 using its integrated,
23rd order, pseudo-noise (PN) pattern generator. The implementation of the 23-bit PN generator uses the
following polynomial:
Stimulus from this generator may also be used for further system testing. Refer to the
MC92604 Dual
Gigabit Ethernet Transceiver Reference Guide
,
for more information.
3.2.1.1
Equipment Setup
Generation and observation of the data-eye produced by the on-chip PN generator requires only the
MC92604DVB, a power supply, a high-speed digital sampling scope, and 0.100" shunts and single pin
receptacle patch cords.
The MC92604DVB and test equipment should be connected as depicted in
circuits with SW1, as shown in
NOTE
All unconnected serial transmitter outputs should be terminated to 50
Ω
.
This can be done by connecting the serial transmitter outputs to the serial
receiver inputs or to 50-
Ω
SMA terminations through in-line AC coupling
(DC blocking).
f
1 x5 x23
+
+
=
