參數(shù)資料
型號(hào)： SAA8117HL
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： REFLECTIVE PHOTOSENSOR SMD
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, SOT-407-1, LQFP-100
文件頁(yè)數(shù)： 43/60頁(yè)
文件大?。?/td> 231K
代理商： SAA8117HL
1999 Apr 02
43
Philips Semiconductors
Product specification
Digital camera USB interface IC
SAA8117HL
9.2.4
V
IDEO
FIFO
REGISTERS
Table 22
Overview of I
2
C-bus video FIFO registers (base address 0x04)
Table 23
Detailed description of I
2
C-bus video FIFO register FIFO OFFSET (address0x04)
Table 24
Detailed description of I
2
C-bus video FIFO register FIFO ACTIVE AND FIFI OFFSET (address 0x05)
Table 25
Detailed description of I
2
C-bus video FIFO register PACKET SIZE (address 0x06)
Table 26
Detailed description of I
2
C-bus video FIFO register READ SPACING AND PACKET SIZE (address 0x07)
ADDRESS
NAME
FUNCTION
0x04
0x05
0x06
0x07
FIFO OFFSET
FIFO ACTIVE AND FIFI OFFSET
PACKET SIZE
READ SPACING AND PACKET SIZE
8 LSBs of the offset value
FIFO active and 3 MSBs of the offset value
8 LSBs of packet size value
read spacing and 2 MSBs of packet size value
7
6
5
4
3
2
1
0
PARAMETER
FIFO offset
mode_fifo_offset: sets the minimum contents of the FIFO that has to be
reached, before a new video frame will be put on the USB bus. This value
can be set between 0 and 2047. Total of 11 bits with 8 LSBs in this register
and 3 MSBs in register 0x05.
X
X
X
X
X
X
X
X
7
6
5
4
3
2
1
0
PARAMETER
FIFO active
mode_active: FIFO is active and the contents of the other mode registers
should not be updated by the microcontroller (maledictive)
FIFO not active
reserved
FIFO offset
3 MSBs of the offset value; see also register 0x04
1
0
X
X
X
X
X
X
X
7
6
5
4
3
2
1
0
PARAMETER
packet size
mode_packet_size:sets the packet size of the USB video channel. Packets
can vary in size between 0 and 1023. Total of 10 bits with 8 LSBs in this
register and 2 MSBs in register 0x07.
X
X
X
X
X
X
X
X
7
6
5
4
3
2
1
0
PARAMETER
read spacing
mode_read_spacing: sets the periodicity of the read pulses; the periodicity
can be set from 1 to 63 (from ‘000001’ to ‘111111’)
packet size
mode_packet_size: 2 MSBs of the value (8 LSBs in register 0x06)
X
X
X
X
X
X
X
X
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