Spare Packets; Table 84: Spare Packet 1 Configuration Register - Analog Devices ADV7850 Hardware Manual

Tx Packet Memory
Map Address
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E

13.7 SPARE PACKETS

The user can configure the ADV7850 to send any type of packets or InfoFrames via the spare packets controls and associated
configuration registers. The ADV7850 features two such spare packets that can be enabled via the
controls. When a spare packet is enabled, the Tx transmits one of these enabled spare packets once every two video fields.
spare_pkt0_en, Addr B8 (Main), Address 0x40[0]
This control is used to enable spare_packet0.
Function
spare_pkt0_en
0 
1
spare_pkt1_en, Addr B8 (Main), Address 0x40[1]
This control is used to enable spare_packet1.
Function
spare_pkt1_en
0 
1
Tx Packet Memory
Map Address
0xC0
0xC1
0xC2
0xC3
0xC4
0xC5
0xC6
0xC7
0xC8
0xC9
0xCA
0xCB
0xCC
0xCD
Rev. A May 2012
Access Type Register Name
R/W spd_pb14[7:0]
R/W spd_pb15[7:0]
R/W spd_pb16[7:0]
R/W spd_pb17[7:0]
R/W spd_pb18[7:0]
R/W spd_pb19[7:0]
R/W spd_pb20[7:0]
R/W spd_pb21[7:0]
R/W spd_pb22[7:0]
R/W spd_pb23[7:0]
R/W spd_pb24[7:0]
R/W spd_pb25[7:0]
R/W spd_pb26[7:0]
R/W spd_pb27[7:0]
Description
Disable spare_packet0
Enable spare_packet0
Description
Disable spare_packet1
Enable spare_packet1

Table 84: Spare Packet 1 Configuration Register

Access Type Register Name
R/W spare1_hb0[7:0]
R/W spare1_hb1[7:0]
R/W spare1_hb2[7:0]
R/W spare1_pb0[7:0]
R/W spare1_pb1[7:0]
R/W spare1_pb2[7:0]
R/W spare1_pb3[7:0]
R/W spare1_pb4[7:0]
R/W spare1_pb5[7:0]
R/W spare1_pb6[7:0]
R/W spare1_pb7[7:0]
R/W spare1_pb8[7:0]
R/W spare1_pb9[7:0]
R/W spare1_pb10[7:0]
Default Value
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Default Value Byte Name
0x00 Spare Packet Header Byte 0
0x00 Spare Packet Header Byte 1
0x00 Spare Packet Header Byte 2
0x00 Spare Packet Data Byte 0
0x00 Spare Packet Data Byte 1
0x00 Spare Packet Data Byte 2
0x00 Spare Packet Data Byte 3
0x00 Spare Packet Data Byte 4
0x00 Spare Packet Data Byte 5
0x00 Spare Packet Data Byte 6
0x00 Spare Packet Data Byte 7
0x00 Spare Packet Data Byte 8
0x00 Spare Packet Data Byte 9
0x00 Spare Packet Data Byte 10
353
Byte Name
SPD Data Byte 14
SPD Data Byte 15
SPD Data Byte 16
SPD Data Byte 17
SPD Data Byte 18
SPD Data Byte 19
SPD Data Byte 20
SPD Data Byte 21
SPD Data Byte 22
SPD Data Byte 23
SPD Data Byte 24
SPD Data Byte 25
SPD Data Byte 26
SPD Data Byte 27
spare_pkt0_en and spare_pkt1_en
ADV7850