參數(shù)資料
型號(hào)： W9966TF
文件頁(yè)數(shù)： 17/44頁(yè)
文件大?。?/td> 278K
代理商： W9966TF
Prel i m nary -17- November 1997
W9966CF/TF
Video Camera Interface Controller with Compression
7.3.2Device ID
The Device ID is a length field followed by a string of ASCII characters defining W9966CF/TF
characteristics and capabilities. The Device ID will be sent from the W9966CF/TF to the host using
the Nibble Mode, which is required by the P1284.
The W9966CF/TF Device ID contains four keys: MANUFACTURER, MODEL, CLASS, and
DESCRIPTION. Currently implemented ID string is shown below, which may be modified depending
on individual vendor
′
s need.
x
′
00
′
, x
′
60
′
,
MFG:Winbond;
MDL:SA5459;
CLS:DIGCAM;
DES:Winbond
′
s DIGCAM driver can not be found in the system;
7.3.3Device Addressing
The bi-directional SPP/EPP/ECP protocal describes two basic types of 8-bit information transfers:
data read/write operations and address read/write operations. Table 7.4 specifies the control signals
used by each mode to perform address/data cycle and to indicate reverse data flow.
TABLE 7.4 PARALLEL PORT READ/WRITE SIGNALS
SIGNAL
SPP
EPP
ECP
Address Strobe
NSTB (NAFD=0)
NSLCT
NSTB (NAFD=0)
Data Strobe
NSTB (NAFD=1)
NAFD
NSTB (NAFD=1)
Reverse Channel
Not supported
Implicit
NINIT=0
An address write cycle is used to select the W9966CF/TF
′
s address mode for subsequent data cycles.
Figure 7.3 defines the data bits of this parallel port data path during an address write operation to the
W9966CF/TF.
Three kinds of output format are provided:
CCD Raw Data :
used only when input data is the CCD raw data (CR01_1 = 0).
YUV 4:2:2 :
used when input data is in 16-bit YUV 4:2:2 format (CR01_1 = 1).
YUV 4:2:0 :
used when input data is in 16-bit YUV 4:2:2 format (CR01_1 = 1).
CCD Raw Data format is supported only in the Original Transfer Mode, while YUV 4:2:2 and YUV
4:2:0 formats are both supported in either Original Transfer Mode or Compressed Transfer Mode.
相關(guān)PDF資料
PDF描述
W9966TF Video Camera Interface Controller With Compression(運(yùn)用壓縮技術(shù)的攝像照相機(jī)接口控制器)
W9966CF Video Camera Interface Controller With Compression(運(yùn)用壓縮技術(shù)的攝像照相機(jī)接口控制器)
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