Altera Serial Digital Interface (SDI) MegaCore Function Instrukcja Użytkownika Strona 125

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Appendix A: Constraints A–3
Specifying TimeQuest Timing Analyzer Constraints
February 2013 Altera Corporation Serial Digital Interface (SDI) MegaCore Function
User Guide
Table A1 through Table A3 show the values for the constraints.
Table A–1. Step 1: Specify Clock Characteristics
Standard Clocks Units
SDI-SD
transceiver_data_rate
270 Mbps
tx_pclk
27 MHz
tx_serial_refclk
67.5 MHz
rx_sd_oversample_clk_in
67.5 MHz
HD-SDI,
HD-SDI dual link
transceiver_data_rate
1485 Mbps
tx_pclk
74.25 MHz
tx_serial_refclk
74.25 MHz
rx_serial_refclk
74.25 MHz
3G-SDI
transceiver_data_rate
2970 Mbps
tx_pclk
148.5 MHz
tx_serial_refclk
148.5 MHz
rx_serial_refclk
148.5 MHz
DR, TR
transceiver_data_rate
2970 Mbps
tx_pclk
148.5 MHz
tx_serial_refclk
148.5 MHz
rx_serial_refclk
148.5 MHz
Soft transceiver SDI
rx_sd_refclk_135
135 MHz
rx_sd_refclk_337
337 MHz
rx_sd_refclk_337_90
° 337 MHz
tx_sd_refclk_270
270 MHz
tx_pclk
27 MHz
Table A–2. Step 2: Set Timing Exceptions (Part 1 of 2)
Standard
Set Multicycle
Paths
set_clock_group set_false_path
(1)
Define Setup and Hold
Relationship
SD-SDI
u_format*
to
u_format
tx_pclk,
transmit_pcs0|clkout(g
xb_tx_coreclk)
switchline, get_clocks
receive_pcs0|clkout
(gxb_rxclk
)
HD-SDI,
HD-SDI dual link,
3G-SDI,
DR,
TR
rx_serial_refclk,
receive_pcs0|clkout
(gxb_rxclk)
switchline,
get_clocks
receive_pcs0|clkout
(gxb_rxclk)
tx_pclk,
transmit_pcs0|clkout(g
xb_tx_coreclk)
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