4-32
Register Descriptions
Figure 4.43
Registers 134–136 (0x086–0x088) Video ES Channel Buffer Numitems
[18:0]
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.
Figure 4.44
Registers 134–136 (0x086–0x088) Video Numitems/Pics in Channel
Compare Panic [18:0]
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,
page 4-22
. The threshold units depends on the
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.
7
3
2
0
Reg. 134
LSB
Video ES Channel Buffer Numitems [7:0]
Read Only
Reg. 135
Video ES Channel Buffer Numitems [15:8]
Read Only
Reg. 136
MSB
Reserved
Video ES Channel Buffer Numitems
[18:16]
Read Only
7
3
2
0
Reg. 134
LSB
Video Numitems/Pics in Channel Compare Panic [7:0]
Write
Reg. 135
Video Numitems/Pics in Channel Compare Panic [15:8]
Write
Reg. 136
MSB
Reserved
Video Numitems/pics in Channel
Compare Panic [18:16]
Write