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JMP7
PRBSEN
SYNCEN
ENABLE
RBCMODE
LOOPEN
GND
TLK1221
8
9
GND
RD[9:0]
TD[9:0]
GND
TD[9:0]
VDD
237 6 5 4
89 237 6 5 4
JMP6
01
01
REFCLK
R
X
N
RXPTXP
TX
N
JMP8
RBC0
RBC1
SYNC
GND
JMP9
VDDPLL
VDD
JMP10
VDDA
VDD
VDD
GND
GND
VDDPLL
VDDA
POWER
SUPPLY
2.5V
+ -
RX+/-
GENERATOR
(PRBS 2^7-1)
TX+/-
ANALYZER
(PRBS 2^7-1)
CLOCK
GENERATOR
SERIAL BERT
DIGITAL OSCILLOSCOPE
CH1 CH2 CH3 CH4
Typical Test and Setup Configurations
Figure 7. TLK1221 EVM Serial PRBS 2^7-1 Test Configuration
TLK1221 Ethernet Transceiver Evaluation Module (EVM)8 SLLU100 – September 2007
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