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STV1602A 数据表(PDF) 14 Page - STMicroelectronics

部件名 STV1602A
功能描述  SERIAL INTERFACE TRANSMISSION DECODER
PDF  22 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV1602A 数据表(HTML) 14 Page - STMicroelectronics

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2
FV
GND
EE
V
10k
Ω
-5V
10/16V
0.1
24
27
30
8
7
23
STV1602A
22
ADS
32
36
5
QSW
37
1
ESI
ESO
6
0.1
-5V
DIX
DIY
33
34
TN1
-5V
22k
Ω
SW3
10
µF/16V
19
PCX
RSE
-5V
V1
FREQUENCY
MONITOR
0.1
1k
Ω
-5V
Figure 10
31
29
30
26
25
75
Ω
100
Ω
47pF
10
µF
47pF
Monitor
OUT
Serial
IN
MON
GND
CX
AIX
AIY
STV1602A
Figure 11 : Equalizer Capacitor Coupling Input
Circuit
STV1602A GENERAL
As shown in the overall block diagram on page 7,
STV1602Ais composed of the following functions :
(1) Analog input as a primary input with automatic
equalizer to meet the loss characteristics of
coaxial cable
(2) Digital input as a secondary input to receive
the encoded signal from short distances within
the same printed circuit board or the same
equipment
(3) Phase locked loop (PLL) variable oscillator
(4) Reclocked serial output
(5) Serial descrambler
(6) SYNC detector
(7) Deserializer
(8) Parallel output buffer amplifiers
(9) Three diagnostic signals : eye monitor, SYNC
monitor and input data presence monitor
A brief explanation of each function is given in the
following sections.
1. Cable equalizer
Transmission of high speed digital data by means
of coaxial cable can greatly attenuate high fre-
quency components.According to the cable length,
received signals can widely differ from those sent;
in such conditions, clock extraction and data iden-
tification could be difficult.
The cable equalizer overcomes this problem.
The IC performs up to 30dB (typical) equalization
at 135MHz, typically 300m of high-grade coaxial
cable. The equalization is automatically performed
according to the coaxial cable length.
The input signal can be delivered either through a
transformer or through a capacitor.
When the digital input is selected, the equalizer is
disabled. Typical characteristics of the equalization
are given in Figure 31.
STV1602A
14/22



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