L64105 LSI Logic Corporation, L64105 Datasheet - Page 100
L64105
Manufacturer Part Number
L64105
Description
Mpeg-2 Audio/video Decoder
Manufacturer
LSI Logic Corporation
Datasheet
1.L64105.pdf
(454 pages)
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Figure 4.18
4-18
7
Register 65 (0x41)
Reserved
Aux Data Layer ID [2:0]
Reserved
User Data FIFO Status [1:0]
Reset User Data FIFO
Register Descriptions
The Aux Data Layer ID indicates the layer origin of the
physical parameter of the current Aux Data FIFO output.
Reading the ID does NOT change the FIFO status.
Reading the current byte in the Auxiliary Data FIFO
Output register
Layer ID. The host should always read this layer ID
register before reading the FIFO output register. The IDs
for the layers are defined in the following table.
Bits
0b100
0b000
0b001
0b010
0b111
The following table shows the user data FIFO status
codes and their meanings. Once “overrun” (11) occurs it
stays at overrun until the status is read.
Bits
0b00
0b01
0b10
0b11
Writing a 1 to this bit position resets the User Data FIFO
to empty. Any data currently in the FIFO is lost.
4
Status
Empty
Data ready
Full
Overrun
Layer
Packet
Sequence
Group of pictures
Picture
Extension layer
(picture or sequence)
User Data Layer ID [1:0]
3
(page
4-19) may change the Aux Data
2
User Data FIFO Status [1:0]
Read Only
1
R
Reset User
Data FIFO
R [4:2]
R [1:0]
W
0
[7:5]
W 0
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