HC4GX15 Datasheet, PDF (438/668 Pages) Altera Corporation – HardCopy IV Device Handbook

1–174
Chapter 1: HardCopy IV GX Transceiver Architecture
Functional Modes
1 The PAD character is defaulted to the A1 byte of the A1A2 alignment pattern.
Figure 1–143. OC-48 Byte Ordering in Automatic Mode
From Byte
Deserializer
rx_dataout
(MSB) ^{A1 A1}
rx_dataout
(LSB)
X
A1
A2 A2
A1 A2
D0 D2
Byte
A1 A1
Ordering
A2 D1
Block
X
A1
To PLD Core
Pad A2
A1 A2
D1 D3
D0 D2
rx_clkout
rx_syncstatus
rx_syncstatus
rx_byteorderalignstatus
SDI Mode
The Society of Motion Picture and Television Engineers (SMPTE) defines various SDI
standards for transmission of uncompressed video.
The following three SMPTE standards are popular in video broadcasting applications:
■ SMPTE 259M standard—more popularly known as the standard-definition (SD)
SDI, is defined to carry video data at 270 Mbps
■ SMPTE 292M standard—more popularly known as the high-definition (HD) SDI,
is defined to carry video data at either 1485 Mbps or 1483.5 Mbps
■ SMPTE 424M standard—more popularly known as the third-generation (3G) SDI,
is defined to carry video data at either 2970 Mbps or 2967 Mbps
You can configure HardCopy IV GX transceivers in HD-SDI or 3G-SDI configuration
using the ALTGX MegaWizard Plug-In Manager.
Table 1–49 shows ALTGX configurations supported by HardCopy IV GX transceivers
in SDI mode.
Table 1–49. ALTGX Configurations in SDI Mode
Configuration
HD
3G
Data Rate (Mbps)
1485
1483.5
2970
2967
REFCLK Frequencies (MHz)
74.25, 148.5
74.175, 148.35
148.5, 297
148.35, 296.7
Core Fabric-Transceiver Interface Width
10 bit and 20-bit
10 bit and 20-bit
Only 20-bit interface allowed in 3G
Only 20-bit interface allowed in 3G
HardCopy IV Device Handbook Volume 3
© June 2009 Altera Corporation