L64105 LSI Logic Corporation, L64105 Datasheet - Page 264

• Manufacturer Part Number: L64105
• Description: Mpeg-2 Audio/video Decoder
• Manufacturer: LSI Logic Corporation

8-22
Table 8.15
When the Postparser writes the first byte of user data into the FIFO, the
Aux/User Data FIFO Ready Interrupt is set. When the Postparser detects
the First Slice Start Code in the bitstream, it sets the First Slice Start
Code Detect Interrupt bit. When set and not masked, either bit causes
INTRn to be asserted to the host. The host should respond by reading
Registers 0 through 4 to determine the cause of the interrupt.
If the host detects that the AUX/User Data FIFO Interrupt is set, it should
read the Aux Data FIFO Status bits and the User Data FIFO Status bits
to determine which FIFO to read. The status code meanings are shown
in
Table 8.16
Video Decoder Module
Bits 65[1:0]
0b00
0b01
0b10
0b11
Register
Table
239
65
66
0
0
8.16.
Bit(s)
[1:0]
[3:2]
[7:0]
User Data FIFO Registers
User Data FIFO Status
1
2
0
3
Status
Empty
Data ready
Full
Overrun
R/W Name
R/W GOP User Data Only
W
W
W
R
R
R
R
R
Aux/User Data FIFO Ready Interrupt
Aux/User Data FIFO Ready Mask
First Slice Start Code Detect Interrupt
First Slice Start Code Detect Mask
Reset User Data FIFO
User Data FIFO Status
User Data Layer ID
User Data FIFO Output
Page Ref.
4-18
4-18
4-19
4-19
4-55
4-2
4-3