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參數(shù)資料
| 型號： | GS9075A |
| 廠商： | Gennum Corporation |
| 英文描述： | GS1575A / GS9075A HD-LINX-R II Multi-Rate SDI Automatic Reclocker |
| 中文描述： | GS1575A / GS9075A的HD - LINX進(jìn)程- R的第二多速率SDI自動時(shí)鐘恢復(fù)器 |
| 文件頁數(shù)： | 7/29頁 |
| 文件大?。?/td> | 403K |
| 代理商： | GS9075A |
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GS1575A / GS9075A Data Sheet
34716 - 0
December 2005
7 of 29
24, 25, 26
SS[2:0]
Bi-directional
When AUTO/MAN is HIGH, SS[0:2] are outputs, displaying the data rate to
which the PLL has locked.
When AUTO/MAN is LOW, SS[0:2] are inputs, forcing the PLL to lock only to a
selected data rate
.
27
ASI/177
Logic Input
When set HIGH, the device disables the 177Mb/s data rate in the data rate
detection circuit. This prevents a false lock to 177Mb/s when using DVB-ASI.
When set LOW, 177Mb/s lock is possible, however, if a 270Mb/s ASI signal is
applied, the device could false lock to the 177MHz signal.
28
LOCKED
Output
Lock Detect.
This pin is set HIGH by the device when the PLL is locked.
29
LOS
Output
Loss of Signal.
Set HIGH when there are no transitions on the active DDI[3:0] input. See
Lock
and LOS on page 22
.
30
VCC_DIG
Power
Most positive power supply connection for the internal glue logic.
Connect to 3.3V.
31
VEE_DIG
Power
Most negative power supply connection for the internal glue logic.
Connect to GND.
33
SD/HD
(GS1575A only)
Output
This signal will be set LOW by the device when the reclocker has locked to
1.485Gbps or 1.485/1.001Gbps, or when a non-SMPTE standard is applied (i.e.
the device is not locked).
It will be set HIGH when the reclocker has locked to 143Mbps, 177Mbps,
270Mbps, 360Mbps, or 540Mbps.
33
SD
(GS9075A only)
Output
This signal will go HIGH when the reclocker has locked to the input SD signal. It
will be LOW otherwise.
34
KBB
Analog Input
Controls the loop bandwidth of the PLL.
Leave this pin floating for serial reclocking applications.
35
SCO_ENABLE
Power
Serial clock output enable.
Connect to VCC to enable the serial clock output. Connect to GND to disable the
serial clock output.
NOTE: This is not a TTL signal input.
Table 1-1: Pin Descriptions (Continued)
Pin Number
Name
Type
Description
SS2
SS1
SS0
DATA RATE
SELECTED/FORCED
(Mb/s)
0
0
0
143
0
0
1
177
0
1
0
270
0
1
1
360
1
0
0
540
1
0
1
1483.5/1485
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