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STV1602A
SERIAL INTERFACE TRANSMISSION DECODER
BUILT-IN AUTOMATIC EQUALIZER FOR UP TO 30dB ATTENUATION AT 135MHz (TYPICALLY 300m OF HIGH-GRADE COAXIAL CABLE), PLL CIRCUIT FOR RECLOCKING, AND SERIAL-PARALLEL CONVERSION CIRCUIT. THIS SERIAL TRANSMISSION DECODER REQUIRES ONLY FEW EXTERNAL COMPONENTS. OTHER RELATED IC’s INCLUDE : STV1601A, A SERIAL TRANSMISSION ENCODER (PARALLEL-TO-SERIAL CONVERSION) STV1389AQ COAXIAL CABLE DRIVER STRUCTURE Hybrid IC
ORDER CODE : STV1602A
APPLICATIONS SERIAL DATA TRANSMISSION DECODER 100 to 270 Mb/s APPLICATIONS EXAMPLES Serial data transmission of digital television signals 525-625 lines 4:2:2 component 270Mb/s (10-bit) 4*fsc PAL composite 177Mb/s (10-bit) 4*fsc NTSC Composite 143Mb/s (10-bit) FUNCTIONS Cable equalizer (maximum gain : 30dB at 135MHz) PLL for serial clock generation Reclocked repeater output (active loop through) Descrambler : modulo-2 multiplication by G(x) = (x9 + x4 + 1) (x + 1) Parallel-to-serial conversion Sync monitor output Eye pattern monitoring Input signal detector
27 26 QFS CX GND MON ADS DIX DIY DPR FV 28 29 30 31 32 33 34 35 36 37 ESI 1 2 GND 3 SY 4 SX 5 QSW 6 TN1 7 VEE 8 VEE 9
1601A-01.EPS
. . . . . . . . . . . . . . . .
PGA37 (Ceramic Package)
PIN CONNECTIONS
GND GND RSE EVR SYN PCK 18 17 16 15 14 13 12 11 10
AIX
25 24 23
AIY
V EE
22 21 20 19 D0 D1 D2 D3 D4 D5 D6 D7 D8
DESCRIPTION
ESO
The STV1602A is a Hybrid IC decoder which converts serial data coming from a serial transmission line into parallel data.
December 1992
D9
1/22
STV1602A
PIN DESCRIPTION
Pin Symbol No
GND
Equivalent Circuit
Description
I/O
Standard Min. Typ. Max. Unit
3
SY
30Ω 3 VR3 30Ω 4
1602A-02.EPS
4
SX
VEE
2kΩ
145Ω
2kΩ
Reclocked serial data output in differential mode. SX and SY are disabled when TN1 is set High. In this case, SX is set High and SY is set Low H L
O
-1.6 -2.4
V V
GND
5
QSW (GND)
To be connected to GND
1kΩ
I
36
5 10kΩ
36
FV
10kΩ V EE
1602A-03.EPS
Adjustment of VCO Free running frequency : VEE level gives the lowest frequency. To adjust it, set TN1 High.
I
GND 1kΩ 1kΩ
1
1
ESO
2kΩ 2kΩ
Output of phase comparator : must be connected to ESI with the shortest distance
O
-3.2
V
1602A-04.EPS
V EE
2/22
1602A-01.TBL
STV1602A
PIN DESCRIPTION (continued)
Pin Symbol No 9 to 18 D9 to D0
GND 600Ω 600Ω 300Ω
Equivalent Circuit
Description Parallel data output H L
21 9
I/O O
Standard Min. Typ. Max. Unit
-0.8 -1.6 O -0.8 -1.6
V V
19
PCK
VR3 210Ω VEE 210Ω
1602A-05.EPS
18
Parallel clock output (rising edge at data center) H L
V V
21
EVR
Data output reference potential
O
-1.2
V
GND
26
AIX
300Ω 26 10kΩ 25 4kΩ 3kΩ 4kΩ 10kΩ
Equalizer differential input
I
-2.0
V
25
AIY
VEE
1602A-06.EPS
GND 2kΩ
28
NC
1kΩ
To be left open
I
-4.6
V
29
28
29
CX
16kΩ
2k Ω
2kΩ
1602A-07.EPS
VEE
3/22
1602A-02.TBL
Equalizer detector output; Input signal : absent present
O -2.4 -2.0 V V
STV1602A
PIN DESCRIPTION (continued)
Pin Symbol No Equivalent Circuit Description I/O Standard Min. Typ. Max. Unit
GND 1kΩ 31
31
MON
V R3
500Ω
Equalizer monitor output. Connect 75Ω resistor between MON-GND. Observe using a 50Ω input oscilloscope at the 75Ω coaxial cable.
O 15 mV (pp)
500Ω V EE
500Ω
GND 2kΩ 2kΩ
1602A-08.EPS
32
?
VR2
32
ADS
V R3
1602A-09.EPS
Serial data input selection High : Digital input DIX/DIY Low : Equalizer input AIX/AIY H L
I -0.5 -5 V V
2kΩ VEE
GND 500Ω 500Ω
33
DIX
VR1
Serial data digital differential input
I
33
34
34
DIY
V R3
1602A-10.EPS
Selected when ADS is High. H L
-1.0 -1.6
V V
1602A-03.TBL
500Ω VEE
4/22
STV1602A
PIN DESCRIPTION (continued)
Pin Symbol No Equivalent Circuit Description I/O Standard Min. Typ. Max. Unit
GND
37
37
ESI
PLL error signal input : must be connected to ESO with the shortest distance
i -3.2 V
V EE
GND 20kΩ 2kΩ
1602A-11.EPS
2kΩ
6
TN1
6
Serial data input activation High : Input disabled (VCO free running condition). Low : Input enabled. During switch-on phase, by temporarily hold High for quick start-up
1602A-12.EPS
I -1.0 -4.0 V V
12kΩ VEE
4kΩ
GND 4kΩ
V CC
20
SYN
20
State changes at each TRS Sync word 3FFH 000H 000H H L
O -1.0 -4.0 V V
2kΩ VEE
2kΩ
1602A-13.EPS
5/22
1602A-04.TBL
STV1602A
PIN DESCRIPTION (continued)
Pin Symbol No
GND 1kΩ 1kΩ
Equivalent Circuit
Description
I/O
Standard Min. Typ. Max. Unit
35
DPR
35
Serial data detection output. When there is an input signal at the input side selected through ADS, this pin goes High. At no signal, it goes Low. H L i.e. - present : High - absent : Low
1602A-14.EPS
O
-1.0 -4.0
V V
6kΩ V EE
GND
2kΩ
10kΩ
22
RSE
22
Selects VCO frequency range H : High range 140 to 270MHz L : Low range 100 to 145MHz H L
1602A-15.EPS
I
-0.4 -4.0
V V
10kΩ
10kΩ V EE
7 23 8 2 24 27 30
VEE VEE GND
-5V supply I/O buffer, PLL equalizer -5V Supply Logic part GND
-5.2 -5.2
-5.0 -5.0
-4.8 -4.8
V V
1602A-05.TBL
6/22
STV1602A
BLOCK DIAGRAM
EVR 21 SYN 20 PCK 19 .