參數(shù)資料
型號: BT849A
英文描述: Single-Chip Video Capture for PCI
中文描述: 單芯片的PCI視頻捕捉
文件頁數(shù): 61/141頁
文件大?。?/td> 1149K
代理商: BT849A
Brooktree
51
F
UNCTIONAL
D
ESCRIPTION
DMA Controller
L848A_A
Bt848/848A/849A
Single-Chip Video Capture for PCI
WRITE1S23
1011
3
Write pixels to memory in planar mode from the FIFO1 beginning at the speci-
fied target addresses. Skip pixels from FIFO2 and FIFO3. This instruction is
used to achieve the YUV9 and YUV12 color modes, where the chroma compo-
nents are sub-sampled.
DWORD0:
[11:0]
Byte Count #1
Byte transfer count from FIFO1
[15:12]
Byte Enables
[23:16]
Reset/Set RISC_STATUS
[24]
IRQ
[25]
Reserved
[26]
EOL
[27]
SOL
[31:28]
Opcode
DWORD1:
[11:0]
Byte Count #2
Byte skip count from FIFO2
[27:16]
Byte count #3
Byte skip count from FIFO3
DWORD2:
[31:0]
32-bit Target Address
Byte Address for Y data from FIFO1
WRITEC
0101
1
Write packed mode pixels to memory from the FIFO continuing from the cur-
rent target address.
DWORD0:
[11:0]
Byte Count
[15:12]
Byte Enables
[23:16]
Reset/Set RISC_STATUS
[24]
IRQ
[25]
Reserved
[26]
EOL
[27]
SOL
Cannot be set
[31:28]
Opcode
Table 11. RISC Instructions
(2 of 4)
Instruction
Opcode
DWORDs
Description
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