C
HEETAH
S
ERIES
S
WITCHERS
–
C
HAPTER
11
81-9059-0570-0
Rev. C
Proprietary Information of
PESA
S
WITCHING
S
YSTEMS
,
I
NC
.
154
11.7
64
X
64
V
IDEO
(C
ROSSPOINT
)
M
ATRIX
C
ARD
11.7.1
64x64 Video (Crosspoint) Matrix Card Overview
The 64x64 Video Matrix Card selects one of 64 inputs to each of 64 outputs. Input signals from the
input buffer card are buffered to the input of a high-speed matrix. The output of the matrix is again
buffered and sent to the output combiner cards. Each matrix card contains input buffer chips (octal
bus transceivers) that drive into a single 64x64 crosspoint configuration (see Figure 68).
SD Input
HD Input
Fiber Input
Control
64x64
Crosspoint
Matrix Card
Matrix Frame
Controller
DAC
Dual
Fiber
Fiber
Dual
270Mb/s
SD Output
1.5Gb/s HD
Output
HD to SD
Conversion
Std. Analog
Input
High-Level
Analog Input
Std. Analog
High-Level
Analog
FIGURE 68: 64x64 Video Crosspoint Matrix Card Diagram
Содержание Cheetah 1024x256
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