Table 67: Vdp_Gs_Vps_Pdc_Utc_Cgmstb_Data Readback Registers - Analog Devices ADV7850 Hardware Manual

gs_vps_pdc_utc_cgmstb[2:0], Addr 48 (VDP), Address 0x9C[2:0]
The readback registers for VPS, PDC, UTC and CGMS type B are shared. This control is used to identify which type of data is to be
written to the shared registers.
Function
gs_vps_pdc_utc_cgmst
b[2:0]
000 
001
010
011
100
101
110
111
status_clear_gems_vps, Addr 48 (VDP), Address 0x78[4] (Self-Clearing)
This control is used to refresh the Gemstar and VPS status registers. This is a self-clearing bit.
Function
status_clear_gems_vps
0 
1
vdp_status_gs_vps_pdc_utc_cgmstb, Addr 48 (VDP), Address 0x40[4] (Read Only)
This readback displays the Gemstar, VPS, PDC, UTC, and CGMS type B data detection status.
Function
vdp_status_gs_vps_pdc
_utc_cgmstb
0 
1
VPS
The VPS data bits are biphase decoded by the VDP. The decoded data is made available in both the ancillary stream and in the VDP
readback registers. VPS decoded data is available in the vdp_gs_vps_pdc_utc_cgmstb_data registers (refer to
Rev. A May 2012
Description
Gemstar 1x/2x
VPS
PDC
UTC
CGMS type B
Reserved
Reserved
Reserved
Description
Do not refresh VPS status registers
Refresh VPS readback registers
Description
Gemstar, VPS, PDC, UTC, and CGMS type B data not detected
Gemstar, VPS, PDC, UTC, and CGMS type B data detected

Table 67: vdp_gs_vps_pdc_utc_cgmstb_data Readback Registers

GS PDC UTC Readback Registers
VDP Map/SDP Map
vdp_gs_vps_pdc_utc_cgmstb_data[7:0]
vdp_gs_vps_pdc_utc_cgmstb_data[15:8]
vdp_gs_vps_pdc_utc_cgmstb_data[23:16]
vdp_gs_vps_pdc_utc_cgmstb_data[31:24]
vdp_gs_vps_pdc_utc_cgmstb_data[39:32]
vdp_gs_vps_pdc_utc_cgmstb_data[47:40]
vdp_gs_vps_pdc_utc_cgmstb_data[55:48]
vdp_gs_vps_pdc_utc_cgmstb_data[63:56]
vdp_gs_vps_pdc_utc_cgmstb_data[71:64]
vdp_gs_vps_pdc_utc_cgmstb_data[79:72]
vdp_gs_vps_pdc_utc_cgmstb_data[87:80]
vdp_gs_vps_pdc_utc_cgmstb_data[95:88]
vdp_gs_vps_pdc_utc_cgmstb_data[103:96]
Address
0x47
0x48
0x49
0x4A
0x4B
0x4C
0x4D
0x4E
0x4F
0x50
0x51
0x52
0x53
318
ADV7850
Table 67).