参数资料
型号: IP-SDI
厂商: Altera
文件页数: 78/140页
文件大小: 0K
描述: IP VIDEO INTERFACE - SDI
标准包装: 1
系列: *
类型: MegaCore
功能: 视频系统用串行数字接口
许可证: 初始许可证
3–48
Chapter 3: Functional Description
Signals
Figure 3–32. Behavior of tx_std, tx_trs, and tx_ln Signals—425MB
tx_pclk
tx_trs
EAV
SAV
EAV
txdata[19:10]
txdata[9:0]
tx_std[1:0]
tx_ln[21:11]
tx_ln[10:0]
3FF(C) 3FF(Y) 000(C) 000(Y) 000(C) 000(Y) XYZ(C) XYZ(Y)
3FF(C) 3FF(Y) 000(C) 000(Y) 000(C) 000(Y) XYZ(C) XYZ(Y)
10
11’d1
11’d2
3FF(C) 3FF(Y) 000(C) 000(Y) 000(C) 000(Y) XYZ(C) XYZ(Y)
3FF(C) 3FF(Y) 000(C) 000(Y) 000(C) 000(Y) XYZ(C) XYZ(Y)
3FF(C) 3FF(Y) 000(C) 000(Y) 000(C) 000(Y) XYZ(C) XYZ(Y)
3FF(C) 3FF(Y) 000(C) 000(Y) 000(C) 000(Y) XYZ(C) XYZ(Y)
11’d3
11’d4
Figure 3–33. Behavior of crc_error_y and crc_error_c Signals
rx_clk
rxdata[19:0]
rxdata[9:0]
3FF
3FF
000
000
000
000
XYZ
XYZ
LN1
LN1
LN2
LN2
CRC1 CRC2
CRC1 CRC2
3FF
3FF
000
000
000
000
XYZ
XYZ
LN1
LN1
LN2
LN2
CRC1 CRC2
CRC1 CRC2
rx_V
rx_H
rx_ln
crc_error_y
crc_error_c
000001a
(2)
(3)
000001b
Notes to Figure 3–33 :
(1) When a CRC error occurs, the crc_error_y or crc_error_c signal goes high until the next line. For HD, Dual Link, and 3G Level A, only
crc_error_y[0] and crc_error_c[0] signals are used. For 3G Level B, crc_error_y[0] and crc_error_c[0] signals are used for link B,
and crc_error_y[1] and crc_error_c[1] signals are used for link A.
(2) The CRC error signals are asserted after the CRC data checked, when the rx_H signal is high. A high CRC signal indicates that there is error in the
previous line data. In this case, both Y and C have CRC error.
(3) The CRC error signals are deasserted on the next line after the CRC data is checked.
Figure 3–34. Behavior of rx_data_valid Signal—425MA
rx_clk (148.5 MHz)
rxdata[19:10]
rxdata[9:0]
3FF(Y)
3FF(C)
000(Y)
000(C)
000(Y)
000(C)
XYZ(Y)
XYZ(C)
rx_data_valid_out[0]
rx_data_valid_out[1]
Figure 3–35. Behavior of rx_data_valid Signal—425MB
rx_clk (148.5 MHz)
rxdata[19:10]
rxdata[9:0]
3FF(C)
3FF(C)
3FF(Y) 000(C)
3FF(Y) 000(C)
000(Y) 000(C)
000(Y) 000(C)
000(Y) XYZ(C)
000(Y) XYZ(C)
rx_data_valid_out[0]
rx_data_valid_out[1]
Serial Digital Interface (SDI) MegaCore Function
User Guide
February 2013 Altera Corporation
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