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SA
Clocking
SB
keptLOW
Input-1
keptHIGH
Input-2
keptLOW
/OE
t
en
t
dis
Hi-Z
75mV
-75mV
75mV
-75mV
t
SX
t
SX
0V
Vcc
2
3.3V
0V
Vcc
2
3.3V
0V
A
B
A
B
Output
Y
Z
Data+
Data-
Clk+
Clk-
Video
Patterm
Generator
800mVppor
1200mVpp
Differential
Coax
Coax
Coax
Coax
Coax
Coax
Coax
Coax
TMDS442
SMA
SMA
SMA
SMA
AVcc
R
T
R
T
AVcc
R
T
R
T
Jitter Test
Instrument
Jitter Test
Instrument
TTP4TTP2TTP1
28AWG
HDMICable
Transmissionmedia
HDMIcable
or
FR4PCBtrace
RX
+EQ
OUT
RX
+EQ
OUT
SMA
SMA
SMA
SMA
TTP3
TMDS442
SLLS757A – AUGUST 2006 – REVISED MARCH 2007
PARAMETER MEASUREMENT INFORMATION (continued)
Figure 8. TMDS Outputs Control Timing Definitions
A. All jitters are measured in BER of 10
-12
B. The residual jitter reflects the total jitter measured at the TMDS442 output, TP3, subtract the total jitter from the signal
generator, TP1
C. The input cable length and the output transmission media are specified in the test conditions.
Figure 9. Jitter Test Circuit
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