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PDF TW2866C Data sheet ( Hoja de datos )
| Número de pieza | TW2866C | |
| Descripción | 4-Channel Video Decoders and Audio Codecs and Video Encoder | |
| Fabricantes | Intersil | |
| Logotipo |  |
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4-Channel Video Decoders and Audio Codecs
and Video Encoder for Security Application
TW2866C
The TW2866 includes four high quality
NTSC/PAL/SECAM video decoders that convert
analog composite video signal to digital
component YCbCr data for security applications.
Each channel contains 10 bit ADC and
proprietary clamp and gain controllers and
utilizes 4H comb filter for separating luminance
& chrominance to reduce cross noise artifacts.
The TW2866 adopts the image enhancement
techniques, such as IF compensation filter, CTI
and programmable peaking. TW2866 also
includes one NTSC/PAL video encoder with two
10 bit DAC‟s to support CVBS and YC output. The
TW2866 also includes audio CODEC, which has
five audio Analog-to-Digital converters and one
Digital-to-Analog converter. A built-in audio
controller can generate digital outputs for
recording/mixing and accepts digital input for
playback.
Features
Integrated five audio ADCs and one audio DAC
Provides multi-channel audio mixed analog
output
Supports I2S/DSP Master/Slave interface for
record output and playback input
PCM 8/16 bit and u-Law/A-Law 8bit for audio
word length
Programmable audio sample rate that covers
popular frequencies of 8/16/32/44.1/48kHz
Supports a two-wire serial host interface
Integrated one video encoder and two10 bit
video CMOS DACs.
Integrated clock PLL for 108MHz clock output.
Ultra low power consumption (Typical
666.84mW)
128 pin LQFP package
Accepts all NTSC(M/4.43) /
PAL(B/D/G/H/I/K/L/M/N/60)/SECAM
standards with auto detection
Integrated four video analog anti-aliasing filters
and 10 bit CMOS ADCs
High performance adaptive 4H comb filters for
all NTSC/PAL standards
IF compensation filter for improvement of color
demodulation
Color Transient Improvement (CTI)
Automatic white peak control
Programmable hue, saturation, contrast,
brightness and sharpness
Proprietary fast video locking system for non-
realtime application
Supports the standard ITU-R BT.656 format or
time multiplexed output with 54/108MHz
Provides simultaneous four channel Full D1 and
CIF time-multiplexed outputs with 54MHz.
FN8253.0
February 3, 2012
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC. 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
Pin Diagram
1 VDDA
2 AOUT
3 VSSA
4 VSSA
5 AINN
6 AIN1
7 AIN2
8 AIN3
9 AIN4
10 AIN5
11 VDDA
12 VDDV
13 VIN1A
14 VIN1B
15 VSSV
16 VSSV
17 VIN2A
18 VIN2B
19 VDDV
20 VDDV
21 VIN3A
22 VIN3B
23 VSSV
24 VSSV
25 VIN4A
26 VIN4B
27 VDDV
28 VDDVDA
29 VYOUT
30 VSSVDA
31 RTERM
32 VCOUT
TW2866C
TW2866
128Pin LQFP_14x14
CLKNO2
CLKPO2
VDDI
VD2[0]
VD2[1]
VD2[2]
VD2[3]
VSS
VD2[4]
VD2[5]
VD2[6]
VD2[7]
VDDO
XTO
XTI
VSS
CLKNO3
CLKPO3
VDDI
VD3[0]
VD3[1]
VD3[2]
VD3[3]
VSS
VD3[4]
VD3[5]
VD3[6]
VD3[7]
VDDO
CLKNO4
CLKPO4
VSS
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
5
5 Page 
TW2866C
Analog Frontend
The TW2866 contains four 10-bit ADC (Analog to Digital Converters) to digitize the analog video inputs. The
ADC can be put into power-down mode by the V_ADC_PWDN register. The TW2866 also contains an anti-
aliasing filter to prevent out-of-band frequency in analog video input signal. So there is no need of external
components in analog input pin except ac coupling capacitor and termination resistor. The following Figure
1 shows the frequency response of the anti-aliasing filter.
0
-5
-10
-15
-20
-25
-30
-35
-40
0
0.2 0.4 0.6 0.8
1 1.2 1.4 1.6
Frequency (Hertz)
FIGURE 1. THE FREQUENCY RESPONSE OF ANTI-ALIASING FILTER
1.8 2
x 107
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TW2866C.PDF ] | |
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