Application Report
SLLA032
TNETE2201 EVM Kit Setup and Usage
Boyd Barrie
MSDS Applications Group
Abstract
The Texas Instruments (TI ) TNETE2201 EVM (evaluation module) kit is a tool used to
evaluate and design high-speed prototypes using the TNETE2201 Ethernet Transceiver
IC (10 mm x 10 mm TQFP plastic package). The EVM kit is used to evaluate device
parameters while acting as a guide for high-speed board layout. The high-speed
interface is selectable between a 50- SMA connector and a GBIC standard interface.
The GBIC standard also provides a 75- copper interface module and various fiber optic
options. Overall, the designer can use the EVM kit as a tool for successful evaluation
and design of an end product.
Contents
Introduction ......................................................................................................................................................2
Board Layout and Configuration ......................................................................................................................3
Test Configuration and Results........................................................................................................................4
Board Layouts, Schematics, and Bill of Materials ............................................................................................6
Digital Signal Processing Solutions
March 1999
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SLLA032
Board Layout and Configuration
The TNETE2201 EVM kit is designed to give the developer many options for operation.
Many of these options are selectable by DIP switch and others may require board
component removal or additions. The following sections provide guidelines to configure
the EVM kit for different modes of operation.
The EVM kit is normally delivered in a default configuration that requires external clock
and data inputs. The high-speed serial input and output are routed through the 50-ohm
transmission line path. The GBIC interface is not connected and would require some
resistor modifications to be functional. The default setup is useful for testing the board
and interface IC. The designer might consider testing the bit error rate, jitter, and eye-
diagram characteristics of the system. The TNETE2201 EVM is shipped with certain
components installed for default operation. Table 1 lists the default configuration.
Table 1. Default Setup as Shipped
Designator
P5
Function
CLK SEL
Condition (TNETE2201)
Jumper installed between Pins 2 and 3
200 ohm installed
200 ohm installed
365 ohm installed
562 ohm installed
Not installed
R1
TX Termination
TX Termination
Bias Net
R2
R5
R6
Bias Net
R8
WIZ OPTION
WIZ OPTION
CAP OPTION
Bias Net
R9
Not installed
R16
R17
R21
R22
C13
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
L1
Zero ohm installed
Not installed
WIZ OPTION
WIZ OPTION
Vcc Decouple
GBIC OPTION
SMA OPTION
GBIC OPTION
SMA OPTION
SMA OPTION
GBIC OPTION
GBIC OPTION
SMA OPTION
RX Termination
TX PLL Cap
REF CLK Bias Net
TX PLL Cap
Filter/Bias
Not installed
Not installed
0.01 µF installed
Not installed
0.01 µF installed
Not installed
0.01 µF installed
0.01 µF installed
Not installed
Not installed
0.01 µF installed
0.01 µF installed
0.0022 µF installed
Zero 0hm installed
0.0022 µF installed
Ferrite installed
Not installed (not provided)
X (OFF)
X1
OSC
DIP1-1
DIP1-2
DIP1-3
PRBSEN
TXRRAMP
X (OFF)
TXDIR
X (OFF)
TNETE2201 EVM Kit Setup and Usage
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Designator
Function
LCKREFN
TESTEN
SYNCEN
LOOPEN
CLKEN
Condition (TNETE2201)
DIP1-4
DIP1-5
DIP1-6
DIP1-7
DIP1-8
X (OFF)
ON
X (OFF)
ON
X (OFF)
Note: X is a don't care state (default position).
The GBIC Configuration requires a modification of the steering capacitors C23 through
C30. This requires removing C24, C26, C27, and C30 and soldering these capacitors in
locations C23, C25, C28, and C29 (see Figure 1).
Figure 1. GBIC Setup Modifications
GBIC
INSTALLED
CAPACITORS
Test Configuration and Results
The serial Bit Error-rate Ratio Test (BERT) is useful for evaluating device and board
characteristics. Using this test, we can determine the eye diagram characteristics of the
system, as shown in Figure 3. The test setup is illustrated in Figure 2.
The HP71603B 3-Gbps Serial BERT outputs a high-speed serial stream to the test board
where the data is converted by the TNETE part to a 10-bit parallel format. The parallel
data is then looped back from the receiver to the transmitter. The pulse generator
provides a clock input to the transmitter. The external clock source is necessary because
the receiver's recovered clock is half the frequency necessary for transmission.
TNETE2201 EVM Kit Setup and Usage
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Both the pulse generator and the BERT are synchronized with an external clock source.
The operator adjusts the variable phase delay to ensure that the clock meets the setup
and hold time of the data. The parallel data along with the clock is routed to the
transmitter where the data is serialized and captured by the oscilloscope. Figure 3 shows
an example eye diagram taken using this technique.
Figure 2. Bit Error-Rate Ratio Test Configuration
Wizard
(With parallel
ports looped)
BERT
HP54750A
Digital O’Scope
HP71603B
36”
36”
Data In Data Out
Channel 1
RX- TX+
RX+ TX-
Data Out
Sync
36”
HP8133A
Pulse Generator
36”
REFCLK
Clk Out
Sync
External Clock
For Sync
(Variable Delay)
Figure 3. Eye Diagrams of High-Speed Serial Outputs
TNETE2201 EVM Kit Setup and Usage
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Board Layouts, Schematics, and Bill of Materials
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bom_list.txt
Electronics Design System
Bill of Materials
07/10/98 15:29:30
Page: 0001
<<<From Job: fcge>>>
01-31xxx-xxx
TEXAS INSTRUMENTS INCORPORATED
Mixed Signal Products
T.I. Internal Data ENGINEER:
RELEASED:________________
------------------------------------------------------------------------------------------------------------------------------------
ITEM| QTY | MFG | MFG PART# | Ref Des | DESCRIPTION | VALUE or FUNCTION | SOCKET
------------------------------------------------------------------------------------------------------------------------------------
1| 3 | PANASONIC
2| 2 | AVX
3| 35 | AVX
|* |
4| 1 | AMP
5| 3 | CONCORD
|* |
|* |
6| 5 | EFJOHNSON
7| 2 | MURATA ERIE | BLM21B03-PT
8| 2 | SAMTEC
9| 1 | SAMTEC
10| 1 | ANY
11| 1 |
12| 3 | JUMPER
13| 1 | VARIES
14| 4 |
| ECS-T1CX106R | C1,C35,C41
| 12061C222JATMA | C32,C34
| CAPACITOR,TANT,SMT | 20%, 16V, 10uF
|
|
|
|
|
| CAPACITOR,SMT1206 | 100V, 5%, 0.0022uF
| 06033G103JATMA | C2-C31,C36,C37 | CAPACITOR,SMT0603 | 25V,5%,0.01uF
|
| C38-C40
| P4
|
|
| 787653
| CONNECTOR,20PIN
| RECEPT,R/A,20PIN,AMP
| 01-2520-3-044 | BJ(+5V)
|
|
| CONNECTOR
|
|
| CONNECTOR
| FILTER,SMT0805
| HEADER,2X10,.1CTRS | HEADER 2X 10 .1CTR
| HEADER,MALE,2X14
| HEADER
| BANANA,FEMALE,SWAGE MOUNT |
| BJ(RTN)
| BJ(+3.3V)
|
|
|
|
| 142-0701-801 | J1-J5
| L1,L2
| TSW-110-07-G-D | P1,P6
| TSW-1-14-05-G-D | P2
| HEADER,MALE,3PI | P5
| DUT_PQFP_PJD64 | U1
| SMA JACK,END LAUNCH,.062P |
| FERRITE,6 OHMS@100MHz
|
|
| HEADER,MALE,2X14,.1CTRS |
| MALE,3PIN,.100CC
|
|
| IC,TQFP,PJD,64PIN | DUT-USER DEFINED
| JUMPER,SMT0603
| OSCILLATOR,106.25MHz | OSC COMBO-106.25MHz
| R8,R9,R21,R22 | RESISTOR,SMT,1206 | UN-INST
| JUMPER-0603
| OSC-COMBO-106.2 | X1
| RES1206(UN)
| R16,R17
| USER DEFINED JUMPER 0603 |
| AMP/50935/X8
|
15| 4 | AVX/KYOCERA | CRA3A4E500GI | RP1-RP4
| RES,SMT,8PIN,50OHM | SERIES CHIP RES ARRAY SMT |
| CRCW06034701F | R7,R10-R14,R18 | RESISTOR,SMT,1/16W,1 | 4.70K OHM |
16| 14 | DALE
|* |
|
|
| R19,R23,R24
| R25-R28
|
|
|
|
|
|
|
|
|
|
|
|* |
17| 3 | DALE
18| 2 | DALE
19| 1 | DALE
20| 1 | DALE
21| 1 | C&K
| CRCW060349R9F | R3,R4,R15
| CRCW0603200F | R1,R2
| CRCW0603365F | R5
| CRCW0603562F | R6
| BD08
| RESISTOR,SMT,0603 | 49.9 OHM
| RESISTOR,SMT,0603 | 200 OHM
| RESISTOR,SMT,0603 | 365 OHM
| RESISTOR,SMT,0603 | 562 OHM
| SWITCH,SPST,DIP16 | SWITCH,16P,SPST X 8
| DIP1
Total Part Count: 90
Total Parts Cost: 0
Page 1
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TI Contact Numbers
INTERNET
Asia
TI Semiconductor Home Page
Phone
International
Domestic
Australia
TI Number -800-800-1450
China
+886-2-23786800
1-800-881-011
TI Distributors
PRODUCT INFORMATION CENTERS
Americas
10810
TI Number -800-800-1450
Hong Kong 800-96-1111
TI Number -800-800-1450
India
TI Number -800-800-1450
Indonesia 001-801-10
TI Number -800-800-1450
Korea
Malaysia
TI Number -800-800-1450
New Zealand 000-911
TI Number -800-800-1450
Philippines 105-11
Phone
Fax
+1(972) 644-5580
+1(972) 480-7800
Email
000-117
Europe, Middle East, and Africa
Phone
Deutsch
English
Español
Francais
Italiano
+49-(0) 8161 80 3311
080-551-2804
1-800-800-011
+44-(0) 1604 66 3399
+34-(0) 90 23 54 0 28
+33-(0) 1-30 70 11 64
+33-(0) 1-30 70 11 67
+44-(0) 1604 66 33 34
Fax
Email
TI Number -800-800-1450
Japan
Phone
Singapore
800-0111-111
TI Number -800-800-1450
International
Domestic
Fax
International
Domestic
Email
+81-3-3457-0972
0120-81-0026
Taiwan
080-006800
Thailand
0019-991-1111
TI Number -800-800-1450
+81-3-3457-1259
0120-81-0036
Fax
Email
886-2-2378-6808
TI is a trademark of Texas Instruments Incorporated.
Other brands and names are the property of their respective owners.
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Copyright 1999 Texas Instruments Incorporated
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