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參數資料
| 型號： | CY7C9235-270JC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 通信及網絡 |
| 英文描述： | SMPTE-259M/DVB-ASI Scrambler/Controller |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 119K |
| 代理商： | CY7C9235-270JC |
PRELIMINARY
SMPTE-259M/DVB-ASI
Scrambler/Controller
CY7C9235
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
March 19, 1999
Features
Fully compatible with SMPTE-259M
—SMPTE-125M compliant for 4:2:2 component video
—SMPTE-244M compliant for 4fsc composite video
Fully compatible with DVB-ASI
Operates from a single +5V or –5V supply
44-pin PLCC package
Encodes both 8- and 10-bit parallel digital streams for
any rate from 16–40 M characters/sec (160–400
Mbits/sec serial)
Operates with CY7B9234 SMPTE HOTLink serializ-
er/transmitter
X
9
+ X
4
+ 1 scrambler and NRZI encoder may be by-
passed for raw data output
Functional Description
SMPTE-259M Operation
The CY7C9235 is a CMOS integrated circuit designed to en-
code SMPTE-125M and SMPTE-244M bit-parallel digital char-
acters (or other data formats) using the SMPTE-259M encod-
ing rules. Following encoding, the characters are output as
bit-parallel characters ready for serialization. The encoded
outputs of the CY7C9235 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 X
9
+ X
4
+ 1 algorithm,
and NRZ-to-NRZI encoding. These functions operate at any
character rate from 16- to 40 MHz. For those systems operat-
ing with non-SMPTE-259M compliant video streams (or for di-
agnostic purposes), the scrambler and NRZI encoding func-
tions can be disabled.
DVB-ASI Operation
The CY7C9235 also contains the necessary multiplexers, con-
trol 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 CY7C9235 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 CY7C9235 ensures that the proper
fill character (K28.5) is generated by the attached CY7B9234
serializer.
The CY7C9235 operates from a single +5V or
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
相關PDF資料 |
PDF描述 |
|---|---|
| CY7C9235-400JC | SMPTE-259M/DVB-ASI Scrambler/Controller |
| CY7C9335A | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| CY7C9335 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| CY7C9335-270AC | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| CY7C9335-400AC | Enclosed Switches Series BAF/DTF: Top Plunger Actuator; 1NC 1NO SPDT Snap Action; Actuator Position - Left |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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、復用器和解復用器 SMPTE Encoder RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間: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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