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參數(shù)資料
| 型號(hào)： | CY7C9235A |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 通信及網(wǎng)絡(luò) |
| 英文描述： | SMPTE-259M/DVB-ASI Scrambler/Controller(SMPTE-259M/DVB-ASI擾頻器/控制器) |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 95K |
| 代理商： | CY7C9235A |
SMPTE-259M/DVB-ASI
Scrambler/Controller
CY7C9235A
Cypress Semiconductor Corporation
Document #: 38-02082 Rev. **
3901 North First Street
San Jose
,
CA 95134
408-943-2600
Revised October 13, 2003
Features
Fully compatible with SMPTE-259M
Fully compatible with DVB-ASI
Operates from a single +5V supply
44-pin PLCC package
Encodes both 8- and 10-bit parallel digital streams for
27M characters/sec (270 Mbits/sec serial)
Operates with CY7B9234 SMPTE HOTLink
serializer/transmitter
×
9
+ ×
4
+ 1 scrambler and NRZI encoder may be
bypassed for raw data output
Functional Description
SMPTE-259M Operation
The CY7C9235A is a CMOS integrated circuit designed to
encode SMPTE-125M bit-parallel digital characters (or other
data formats) using the SMPTE-259M encoding rules.
Following encoding, the characters are output as bit-parallel
characters ready for serialization. The encoded outputs of the
CY7C9235A are designed to be directly mated to a CY7B9234
HOTLink transmitter, which then converts the bit-parallel
characters into a SMPTE-259M compatible high-speed serial
data stream.
This device performs both TRS (sync) detection and filtering,
data scrambling with the SMPTE-259M ×
9
+ ×
4
+ 1 algorithm,
and NRZ-to-NRZI encoding. These functions operate at a 27
MHz character rate. For those systems operating with
non-SMPTE-259M compliant video streams (or for diagnostic
purposes), the scrambler and NRZI encoding functions can be
disabled.
DVB-ASI Operation
The CY7C9235A also contains the necessary multiplexers,
control inputs, and outputs, to sequence out a DVB-ASI
compliant video stream. DVB-ASI operation is enabled
through activation of a single input signal. This allows a single
serial output port to support both SMPTE and DVB data
streams under software or hardware control.
In DVB-ASI mode the CY7C9235A operates with two enable
signals (ENA and ENN) to allow data to be presented from
either synchronous (clocked) or asynchronous FIFOs. When
data is not available, the CY7C9235A ensures that the proper
fill character (K28.5) is generated by the attached CY7B9234
serializer.
The CY7C9235A operates from a single +5V supply. It is
available in a 44-pin PLCC space saving package.
PD
9
(SVS)
PD
8
PD
7
PD
6
PD
5
PD
4
PD
3
PD
2
PD
1
PD
0
(SC/D)
ENA
ENN
SC/D_EN
SVS_EN
BYPASS
TRS_FILT
DVB_EN
CKW
OE
I
T
10
S
10
N
10
O
ENA_OUT
TRS_DET
Q
9
(SVS)
Q
8
Q
7
Q
6
Q
5
Q
4
Q
3
Q
2
Q
1
Q
0
(SC/D)
M
10
10
Logic Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C9235A-270JC | 制造商:Cypress Semiconductor 功能描述:SMPTE-259M/DVB-ASI Scrambler/Controller 44-Pin PLCC 制造商:Rochester Electronics LLC 功能描述: |
| CY7C9235A-270JXC | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 SMPTE Encoder RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線(xiàn)路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| CY7C924ADX-AC | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述: |
| CY7C924ADX-ADI | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述: |
| CY7C924ADX-AI | 制造商:Cypress Semiconductor 功能描述:Framer 5V 100-Pin TQFP |
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