Altera Cyclone V SoC Development Board Bedienungsanleitung PDF herunterladen (Seite 44)

2–36 Chapter 2: Board Components

Components and Interfaces

Cyclone V SoC Development Board November 2013 Altera Corporation

Reference Manual

SDI Video

The serial digital interface (SDI) video port consists of a LMH0303 cable driver

(output) and a LMH0384 cable equalizer (input). The PHY devices from National

Semiconductor interface to single-ended 75-Ω SMB connectors.

SDI Video Output

The cable driver supports operation at 270 Mb standard definition (SD), 1.5 Gb high

definition (HD), and 3.0 Gb dual-link HD modes. The data rate is driven directly from

the Cyclone V SoC transceiver output using a slower-speed CMU channel (maximum

of 3.125 Gbps). The device can be clocked by the 148.5 MHz voltage-controlled crystal

oscillator (VCXO) and matched to incoming signals within 50 ppm using the UP and

DN voltage control lines to the VCXO.

Table 2–28 shows the supported output standards for the SD and HD input.

f For more information about the application circuit of the LMH0303 cable driver, refer

to the cable driver data sheet at www.national.com.

Table 2–29 summarizes the SDI video output interface pin assignments, signal names,

and functions.

0x5B HPS power monitor

0x5E FPGA and HPS power monitor synchronize

0x51 EEPROM

0x70 Si5356 quad-programmable clock

0x66 Si570 programmable oscillator

0x55 Si571 programmable oscillator

Table 2–27. I

C interface address map

Address Device

Table 2–28. Supported Output Standards for SD and HD Input

SD_HD Input Supported Output Standards Rise TIme

0 SMPTE 424M, SMPTE 292M Faster

1 SMPTE 259M Slower

Table 2–29. SDI Video Output Interface Pin Assignments, Schematic Signal Names, and Functions

Board

Reference (U25)

Schematic Signal Name I/O Standard

Cyclone V SoC Device

Pin Number

Description

SDI_TX_EN

2.5-V AA30 Device enable

SDI_TX_RSET

3.3-V — Device reset

SDI_TX_SD_HDn

2.5-V AC29 Slew rate control

SDI_TX_P

1.5-V PCML T4 SDI video input P

SDI_TX_N

1.5-V PCML T3 SDI video input N

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 67 68

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