Altera Arria V GX FPGA Development Board User Manual
Page 46
2–36
Chapter 2: Board Components
General User Input/Output
Arria V GX FPGA Development Board
November 2013
Altera Corporation
Reference Manual
Figure 2–7
is an excerpt from the LMH0384SQ cable equalizer data sheet that shows
the SDI cable equalizer. On this development board, the output is a single-ended
output, with the negative channel driving a load local to the board.
Table 2–39
summarizes the SDI video input interface pin assignments, signal names,
and functions.
Table 2–40
lists the SDI connector component reference and manufacturing
information.
Figure 2–7. SDI Cable Equalizer
BYPASS
MUTE
REF
1.0
μF
75
Ω
37.4
Ω
1.0
μF
1.0
μF
CD
SDI
SDI
SDO
SDO
CD
MUTE
MUTE
REF
BYPASS
AEC+
AEC–
75
Ω
MUTE
Coaxial Cable
SDI Adaptive
Cable Equalizer
To FPGA
3.9 nH
Table 2–39. SDI Video Input Interface Pin Assignments, Schematic Signal Names, and Functions
Board Reference
(U23)
Schematic
Signal Name
Arria V GX FPGA
Pin Number
I/O Standard
Description
2
SDI_A_EQIN_P1
—
3.3-V
SDI video cable equalizer input P
3
SDI_A_EQIN_N1
—
3.3-V
SDI video cable equalizer input N
7
SDI_A_RX_BYPASS
P19
2.5-V
Equalizer bypass enable
11
SDI_A_RX_P
AJ1
1.4-V PCML
SDI video output P
10
SDI_A_RX_N
AJ2
1.4-V PCML
SDI video output N
14
SDI_A_RX_EN
AK34
2.5-V
Device enable
15
SDI_A_RX_CDN
—
3.3-V
SDI video cable equalizer input carrier
detect output to LED
Table 2–40. SDI Connector Component Reference and Manufacturing Information
Board
Reference
Description
Manufacturer
Manufacturing
Part Number
Manufacturer
Website
U24
3-Gbps HD/SD SDI cable driver with
cable detect
National Semiconductor
LMH0303SQx
U23
3-Gbps HD/SD SDI adaptive cable
equalizer
National Semiconductor
LMH0384SQ