TMDS261B Datasheet, PDF (18/48 Pages) Texas Instruments – TWO-PORT HDMI SWITCH

TMDS261B
SLLS987A – SEPTEMBER 2009 – REVISED JULY 2011
www.ti.com
Data+
Parallel _Data–
BERT
1000-mVpp
Differential
Clk+
Clk–
SMA
Coax
SMA
Coax
RX
+EQ
OUT
Coax
Coax
HDMI Cable⁽¹⁾
TMDS261B
SMA
SMA
RX
+EQ
OUT
<2-inch⁽⁶⁾ 50-W
Transmission Line
<2-inch⁽⁶⁾ 50-W
Transmission Line
SMA
SMA
Coax
Coax
<2-inch⁽⁶⁾ 50-W
Transmission Line
<2-inch⁽⁶⁾ 50-W
Transmission Line
SMA
SMA
Coax
Coax
AVCC⁽⁴⁾
R_T R_T(5)
Jitter Testnnn
AVCC Instrument^{(2, 3)}
R_T R_T
Jitter Testnnn
Instrument^{(2, 3)}
TTP1
TTP2
TTP3
TTP4
(1) The HDMI cable between TTP1 and TTP2 is 0 m (no loss) case and 20 m case. See Figure 15 for the loss profile of
the cable.
(2) All jitter is measured at a BER of 10^–9.
(3) Residual jitter reflects the total jitter measured at TTP4 minus the jitter measured at TTP1.
(4) AVCC = 3.3 V; VSadj = 4.02 kΩ.
(5) R_T = 50 Ω.
(6) 2 inches = 5,08 cm.
NOTES: Output edge rate default (fastest): input edge rate from the parallel BERT greater than 75 ps (20%–80%). The input
signal from the parallel BERT has no pre-emphasis.
Figure 14. Jitter Measurement Setup
B0331-09
2
−3
HDMI Cable 0 m
−8
−13
−18
−23
HDMI Cable 20 m
−28
−33
0.0 0.5 1.0 1.5 2.0 2.5 3.0
f − Frequency − GHz
G001
Figure 15. Loss Profile of 20-m HDMI Cable
18
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