Packet Registers; Acp Packet Registers; Table 30: Acp Packet Registers - Analog Devices ADV7850 Hardware Manual

Function
en_pkt_cnt_sel
0 
1
pkt_cnt_sel[3:0], Addr 7C (InfoFrame), Address 0xFE[3:0]
This control selects which one of the multiple received packets per frame of type pkt_cnt_id is to be collected. It must be enabled with
en_pkt_cnt_sel. It should be manually changed after receiving the corresponding new packet detect flag.
Function
pkt_cnt_sel[3:0]
0000 
xxxx
1110
1111
rb_pkt_cnt[3:0], Addr 7C (InfoFrame), Address 0xFF[3:0] (Read Only)
This readback displays the count of number of packets of type pkt_cnt_id per frame, as detected between VSync rising edges. The count
readback is supported for any pkt_cnt_id, even those packets that cannot be stored in the InfoFrame Map, e.g. general control packets.
pkt_cnt_id[7:0], Addr 7C (InfoFrame), Address 0xFD[7:0]
This control is used to select which type of packet is going to be counted during each frame. Any packet header ID is supported to
detect the count, but only collectable packets can be stored. The default is 0x81 for vendor specific InfoFrame.
Function
pkt_cnt_id[7:0]
10000001 

7.35 PACKET REGISTERS

ACP Packet Registers

7.35.1
Table 30 provides the list of readback registers available for the ACP packets. Refer to the HDMI 1.4 specifications for a detailed
explanation of the ACP packet fields.
InfoFrame
Map Address
0xEF
0xF0
0xF1
0x70
0x71
0x72
0x73
0x74
0x75
0x76
0x77
0x78
0x79
0x7A
0x7B
0x7C
Rev. A May 2012
Description
Disabled, collect every packet as it is received
Enable selectively collecting one of multiple packets per frame of the same type
Description
Select 1st packet after VSync rising edge
Select 15th packet after VSync rising edge
Undefined
Description
default

Table 30: ACP Packet Registers

R/W Register Name
R/W acp_packet_id[7:0]
R acp_type
R acp_header2
R acp_pb_0_1
R acp_pb_0_2
R acp_pb_0_3
R acp_pb_0_4
R acp_pb_0_5
R acp_pb_0_6
R acp_pb_0_7
R acp_pb_0_8
R acp_pb_0_9
R acp_pb_0_10
R acp_pb_0_11
R acp_pb_0_12
R acp_pb_0_13
Packet Byte No.
Packet Type Value
HB1
HB2
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
207
ADV7850
1