Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 37)

Chapter 3: Functional Description 3–7
Block Description
February 2013 Altera Corporation Serial Digital Interface (SDI) MegaCore Function
User Guide
Figure 3–4 shows the top-level block diagram for the SDI receiver.
The received data is NRZI decoded and descrambled and then presented as a
word-aligned parallel output—20 bit for HD-SDI; 10 bit for SD-SDI (refer to
Table 3–16 on page 3–41 for rxdata bus definition).
Figure 3–4. SDI Receiver Block Diagram
Descrambler
SDI RECEIVER
Protocol Block
Transceiver Interface Block
Transceiver Block
Aligner
LN Extract
CRC Extract
ANC Track
TRS Match
Format
GXB RX Sample
GXB Control FSM
Triple Rate Detect
rst_rx
rx_serial_refclk
enable_sd_search
enable_hd_search
enable_3g_search
sdi_reconfig_done
rst_rx
rx_serial_refclk
sdi_rx (serial data)
gxb4_cal_clk
sdi_reconfig_clk
sdi_reconfig_togxb[3:0]
sdi_gxb_powerdown
rst_rx
en_sync_switch
rx_status[10:0]
rx_trs
rx_ln[21:0]
rxdata[19:0]
rx_data_valid_out[1:0]
crc_error_c[1:0]
crc_error_y[1:0]
rx_anc_data[19:0]
rx_anc_valid[3:0]
rx_anc_error[3:0]
rx_F[1:0]
rx_H[1:0]
rx_V[1:0]
rx_AP[1:0]
xyz_valid, rx_xyz, rx_eav
rx_clk
rx_std[1:0]
rx_std_flag_hd_sdn
sdi_start_reconfig
sdi_reconfig_fromgxb[16:0]
rx_clk rx_hd_sdi w
ord_v
alid
w
ord[19:0]
digital_reset analog_reset loc
k_todata loc
k_torefclk rx_cloc
kout
rx_dataout[19:0]