L64105 LSI Logic Corporation, L64105 Datasheet - Page 114
L64105
Manufacturer Part Number
L64105
Description
Mpeg-2 Audio/video Decoder
Manufacturer
LSI Logic Corporation
Datasheet
1.L64105.pdf
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Figure 4.43
Figure 4.44
4-32
Reg. 134
Reg. 135
Reg. 136
Reg. 134
Reg. 135
Reg. 136
MSB
MSB
LSB
LSB
Registers 134–136 (0x086–0x088) Video ES Channel Buffer Numitems
[18:0]
Registers 134–136 (0x086–0x088) Video Numitems/Pics in Channel
Compare Panic [18:0]
7
7
These registers contain the number of items (64-bit words) remaining to
be read in the Video ES channel buffer. The LSB should be read first
since this captures the next significant byte and MSB in Registers 135
and 136. These should then be read immediately to ensure that the
correct captured value is read.
The host can write to these registers to program the threshold value to
be used for the panic feature. For a description of the panic feature, see
Register 69, bits 3 and 4,
setting of the bits in Register 69. When they are set to 0b01, the
threshold is in terms of the number of items (64-bit words) in the Video
ES channel buffer. When the bits in Register 69 are set to 0b10, the
threshold is in terms of the number of picture start codes present in the
Video ES channel buffer.
Register Descriptions
Video Numitems/Pics in Channel Compare Panic [15:8]
Video Numitems/Pics in Channel Compare Panic [7:0]
Reserved
Reserved
Video ES Channel Buffer Numitems [15:8]
Video ES Channel Buffer Numitems [7:0]
page
Read Only
Read Only
Write
Write
4-22. The threshold units depends on the
3
3
Video ES Channel Buffer Numitems
Video Numitems/pics in Channel
2
2
Compare Panic [18:16]
Read Only
[18:16]
Write
0
0
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