Altera SDI II MegaCore User Manual
Page 76
Signal
Width Direction
Description
rx_format
5
Output
Indicates the format for the received video transport.
• SMPTE259M 525i = 00000
• SMPTE259M 625i = 00001
• SMPTE274M 1080i30/60/59.94 = 00100
• SMPTE274M 1080i25/50 = 00101
• SMPTE274M 1080p24/23.98 = 00110
• SMPTE296M 720p60/59.94 = 00111
• SMPTE296M 720p50 = 01000
• SMPTE296M 720p30/29.97 = 01001
• SMPTE296M 720p25 = 01010
• SMPTE296M 720p24/23.98 = 01011
• SMPTE274M 1080p30/29.97/60/59.94 = 01100
• SMPTE274M 1080p25/50 = 01101
• SMPTE274M 1080i24 = 01110
• SMPTE ST 2036 UHDTV1 (3840×2160P) 24 = 01111
• SMPTE ST 2036 UHDTV1 (3840x2160P) 25/50 = 10000
• SMPTE ST 2036 UHDTV1 (3840x2160P) 30/60 = 10001
• Undetectable format, revert to default value: 11111
• Others = Reserved
The format represents only the video transport format; not the
picture format. For example, when 1080p50 video is transported
on HD-SDI dual link, the video transport format is 1080i50.
To differentiate between video format with 1 and 1/1.001 rate,
you have to also refer to the
rx_clkout_is_ntsc_paln
output
signal. For example, if
rx_format
= 00100,
rx_clkout_is_ntsc_
paln
= 1, then the format for the received video is 1080i59.94.
Otherwise, it is 1080i60.
To differentiate between video format across HD and 3G
interfaces, you have to also refer to the
rx_std
output signal. For
example, if
rx_format
= 1100 and
rx_clkout_is_ntsc_paln
=
0,
rx_std
= 01, then the received video format is 1080p30. If the
rx_std
= 11 or 10, then the received video format is 1080p60.
Note: For 3G-SDI, HD-SDI dual link, and triple standard
modes, you may get an inconsistent format detection
if the incoming data does not include a payload ID
packet.
rx_eav
1S
Output
Receiver output that indicates current TRS is EAV. This signal is
asserted at the fourth word of TRS, which is the XYZ word.
rx_trs
1S
Output
Receiver output that indicates current word is TRS. This signal is
asserted at the first word of 3FF 000 000 TRS.
rx_align_locked
1
Output
Alignment locked, indicating that a TRS has been spotted and
word alignment is performed.
4-34
SDI II IP Core Signals
UG-01125
2015.05.04
Altera Corporation
SDI II IP Core Functional Description