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PDF GS9090B Data sheet ( Hoja de datos )
| Número de pieza | GS9090B | |
| Descripción | GenLINX III 270Mb/s Deserializer | |
| Fabricantes | Gennum Corporation | |
| Logotipo |  |
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GS9090B GenLINX® III 270Mb/s Deserializer for SDI
Key Features
• SMPTE 259M-C compliant descrambling and NRZI to
NRZ decoding (with bypass)
• DVB-ASI 8b/10b decoding
• Integrated line-based FIFO for data alignment/delay,
clock phase interchange, DVB-ASI data packet
extraction and clock rate interchange, and ancillary
data packet extraction
• Integrated VCO and reclocker
• User selectable additional processing features
including:
TRS, ANC data checksum, and EDH CRC error
detection and correction
programmable ANC data detection
illegal code remapping
• Internal flywheel for noise immune H, V, F extraction
• Automatic standards detection and indication
• Enhanced Gennum Serial Peripheral Interface (GSPI)
• JTAG test interface
• Polarity insensitive for DVB-ASI and SMPTE signals
• +1.8V core power supply with optional +1.8V or +3.3V
I/O power supply
• Small footprint (8mm x 8mm)
• Low power operation (typically 145mW)
• Pb-free
Applications
• SMPTE 259M-C Serial Digital Interfaces
• DVB-ASI Serial Digital Interfaces
Description
The GS9090B is a 270Mb/s reclocking deserializer with an
internal FIFO. It provides a complete receive solution for
SD-SDI and DVB-ASI applications.
In addition to reclocking and deserializing the input data
stream, the GS9090B performs NRZI-to-NRZ decoding, de-
scrambling as per SMPTE 259M-C, and word alignment
when operating in SMPTE mode. When operating in
DVB-ASI mode, the device will word align the data to K28.5
sync characters and 8b/10b decode the received stream.
The internal reclocker features a very wide input jitter tol-
erance, and is fully compatible with both SMPTE and
DVB-ASI input streams.
The GS9090B includes a range of data processing
functions such as EDH support (error detection and han-
dling), and automatic standards detection. The device can
also detect and extract SMPTE 352M
payload identifier packets and independently identify the
received video standard. This information is read from in-
ternal registers via the host interface port.
The GS9090B also incorporates a video line-based FIFO.
This FIFO may be used in four user-selectable modes to car-
ry out tasks such as data alignment / delay, clock phase in-
terchange, MPEG packet extraction and clock rate
interchange, and ancillary data packet extraction.
Parallel data outputs are provided in 10-bit multiplexed
format, with the associated parallel clock output signal op-
erating at 27MHz.
The device may also be used in a low-latency data pass
through mode where only descrambling and word align-
ment will be performed in SMPTE mode.
GS9090B GenLINX® III 270Mb/s Deserializer for SDI
Data Sheet
40749 - 5
May 2010
www.gennum.com
1 of 72
1 page  
1. Pin Out
1.1 Pin Assignment
LF- 1 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 IO_GND
PLL_GND
2
41 DOUT9
PLL_VDD
3
40 DOUT8
BUFF_VDD
4
DDI 5
DDI 6
BUFF_GND
7
TERM
8
NC 9
VBG
10
NC 11
GS9090B
XXXXE3
YYWW
GENNUM
39 DOUT7
38 DOUT6
37 DOUT5
36 DOUT4
35 DOUT3
34 DOUT2
33 DOUT1
32 DOUT0
IOPROC_EN 12
31 RD_RESET
JTAG/HOST
13
30 RD_CLK
RESET
14
15
16
17 18
19 20 21 22
23 24
25
26
27
29
28
IO_VDD
Center Pad
(bottom of package)
Figure 1-1: Pin Assignment
GS9090B GenLINX® III 270Mb/s Deserializer for SDI
Data Sheet
40749 - 5
May 2010
5 of 72
5 Page 
Table 1-1: Pin List and Description (Continued)
53 VCO_VDD
54 LB_CONT
Analog
Analog
Input
Power
Input
55 VCO_GND
56 LF+
– Center Pad
Analog
Analog
–
Input
Power
Input
Power
Power supply connection for Voltage-Controlled-Oscillator.
Connect to +1.8V DC.
CONTROL SIGNAL INPUT
Control voltage to fine-tune the loop bandwidth of the PLL.
Ground connection for Voltage-Controlled-Oscillator. Connect to
GND.
Loop filter component connection. Connect to pin 1 (LF-) as shown
in Typical Application Circuit (Part B) on page 68.
Connect to GND following recommendations in Recommended PCB
Footprint on page 70
GS9090B GenLINX® III 270Mb/s Deserializer for SDI
Data Sheet
40749 - 5
May 2010
11 of 72
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet GS9090B.PDF ] | |
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