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Preliminary Data Sheet
INDT/R166B
INDT/R331B
Date: 2005-03-14 Revision: 0.1
Page 8 of 40
1.3 Sideband Interface
1.3.1 General Information
The sideband interfaces provide a bi-directional data path subdivided into several logical data streams with different
bandwidth in both directions:
Downstream: Data direction from Transmitter (INDT) -->
to Receiver (INDR)
Upstream:
Data direction to Transmitter (INDT)
<
--
from Receiver (INDR)
Activating the upstream sideband data transmission necessitates an additional pair of wires to establish the physical uplink
(see 1.1 Link Interface). STP cables usually contain 4 pairs of wires; thus this extra connection is available in most cases.
If the upstream sideband data channel is not used, it has to be disabled. The downstream sideband data channels can be
partially disabled to provide extra bandwidth for the pixel data transmission.
Figure 1.6: Sideband Data Interfaces
Note
: SB4 available at INDT/R331B only.
SB0
LowSpeed
SB1
High Speed
SB2
LowSpeed
SB3
High Speed
SB4
High Speed
SB2
Low Speed
SB3
High Speed
SB4
High Speed
SB0
LowSpeed
SB1
High Speed
SB4_CLKI
SB4_CLKO
SB4_D[1:0]
SB3_CLKI
SB3_CLKO
SB3_D[1:0]
SB2_CLK
SB2_D[3:0]
SB1_CLK
SB1_D[1:0]
SB0_CLK
SB0_D[3:0]
SB4_CLK
SB4_D[1:0]
SB3_CLK
SB3_D[1:0]
SB2_CLK
SB2_D[3:0]
SB1_CLKI
SB1_CLKO
SB1_D[1:0]
SB0_CLK
SB0_D[3:0]
2
2
4
2
4
4
2
4
2
2
Downstream
Upstream
INDT
Transmitter
INDR
Receiver
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