參數(shù)資料
型號(hào)： SAA8112HL
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： Digital Camera Signal Processor and Microcontroller(數(shù)字照相信號(hào)處理器和微控制器)
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-407-1, LQFP-100
文件頁(yè)數(shù)： 15/40頁(yè)
文件大?。?/td> 137K
代理商： SAA8112HL
2000 Jan 18
15
Philips Semiconductors
Product specification
Digital camera signal processor and
microcontroller
SAA8112HL
8.6
Output formatter
The last processing block of the SAA8112HL (denoted as
DIGOUT in Fig.1) is a flexible output formatter, which
performs two main tasks (see Table 2):
Scaling
Synchronization generation.
A scaler can be used to divide the horizontal or vertical
resolution by two or four (high quality FIR filters are used
to avoid artifacts). Also, a CIF (352
×
288) cut can be
made from a VGA sensor. If not used, the scaler can be
bypassed.
The output format is usually YUV 4 : 2 : 2. The YUV
samples are multiplexed on a single 8-bit output port.
The output data is in synchronization with the output clock
(LLC). The output data rate is twice the pixel frequency.
Synchronization codes SAV and EAV are inserted before
and after the active line, as described in CCIR/ITU656.
In addition, three other synchronization signals are
available:
HREF: Horizontal reference. This pulse usually goes
high with the first active data and goes low after the last
active data. HREF does not usually include the SAV and
EAV codes. To accommodate various sensor sizes, the
start and stop positions of HREF are programmable.
VS: vertical synchronization.
PXQ:pixelqualifier; thispulsegoes highwith every valid
pixel, including the SAV/EAV codes. It goes low when
there are invalid pixels in a line, for example, when the
scaler is used.
The SAA8112HL output formatter also features an
IEEE1394 mode, which helps to support applications
defined around the “1394-based Digital Camera
Specification”of the IEEE1394 trade association.
In this case, the HREF, VS and PXQ signals are designed
to help to packetize the video according to the following
mode of the “1394-based Digital Camera Specification”
Format_0 (VGA), mode_0:
160
×
120 YUV(4 : 4 : 4); 24 bits/pixel
Format_0 (VGA), mode_1:
320
×
240 YUV(4 : 2 : 2); 16 bits/pixel
Format_0 (VGA), mode_2:
640
×
480 YUV(4 : 1 : 1); 12 bits/pixel
Format_0 (VGA), mode_3:
640
×
480 YUV(4 : 2 : 2); 16 bits/pixel
Format_0 (VGA), mode_5:
640
×
480 Y (B and W); 8 bits/pixel.
For mode_0 and mode_2, the YUV 4 : 2 : 2 output is
filtered to obtain 4 : 1 : 1 or 4 : 4 : 4.
With the IEEE1394 mode, the definition of the output
synchronization pulses is changed as described below:
HREF goes high during the first valid byte of a packet;
it is low elsewhere
VS can be programmed in length and position; this
pulse can be used to set the SY field of the 1394 header
to 1 for the first isochronous packet of a frame
PXQ goes high during the valid Y, U or V data
LLC remains the output clock and is synchronized with
the data output.
Table 2
Typical cutter and scaler modes
Note
1.
With the HR sensor, the active area before scaling is 704
×
576 (PAL) or 704
×
486 (NTSC). Therefore, the formats
generated by the scaler are: CIF 352
×
288 (PAL), 325
×
243 (NTSC) and QCIF 176
×
144 (PAL and NTSC).
SENSOR TYPE
OUTPUT FORMAT
SIF 320
×
240
QSIF 160
×
120
CIF 352
×
288
CUTTER/SCALER MODES
VGA
scaled half horizontally and vertically
scaled quarter horizontally and vertically
scaled half horizontally and vertically
cut
scaled quarter horizontally and vertically
cut
cut then scaled half horizontally and vertically
scaled half horizontally and vertically
High Resolution
QCIF 176
×
144
CIF
QCIF 176
×
144
相關(guān)PDF資料
PDF描述
SAA8113HL Digital PC-camera signal processor(數(shù)字PC照相信號(hào)處理器)
SAA8115HL Digital Camera USB Interface(數(shù)字照相USB接口)
SAA8116ET Digital PC-camera signal processor including microcontroller and USB interface
SAA8116HL Digital PC-camera signal processor, microcontroller andUSB interface
SAA8116 Digital PC-camera signal processor including microcontroller and USB interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA8113HL 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital PC-camera signal processor
SAA8115HL 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital camera USB interface
SAA8116 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital PC-camera signal processor including microcontroller and USB interface
SAA8116104BE 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC PC WEB CAMERA DSP WITH USB RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
SAA8116104BE-S 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC PC WEB CAMERA DSP WITH USB RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
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