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參數(shù)資料
| 型號(hào)： | GS1545-CQR |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HDTV Serial Digital Equalizing Receiver |
| 中文描述： | 串行數(shù)字高清晰度電視接收機(jī)均等 |
| 文件頁數(shù)： | 7/19頁 |
| 文件大小： | 198K |
| 代理商： | GS1545-CQR |
GENNUM CORPORATION
522 - 28 - 00
7
G
PIN DESCRIPTIONS
NUMBER
SYMBOL
LEVEL
TYPE
DESCRIPTION
1, 2, 3, 4, 6, 8,
9, 10, 11, 14,
15, 22, 23, 24,
25, 26, 27, 28,
29, 37, 38, 39,
40, 51, 52, 57,
58, 65, 66, 67,
68, 69, 70, 71,
77, 78, 82, 83,
84, 87, 88, 90,
92, 94, 95, 97,
99, 100, 101,
102, 103, 104,
107, 114, 115,
116, 118, 119,
121, 123, 125,
127, 128
NC
No Connect
. Leave these pins floating.
5
MCLADJ
Analog
Input
Control Signal Input
. Adjusts the maximum amount of cable for the
equalizer (from 0m to the maximum cable length). Normally the output
is muted (latched to the last state) when the set maximum cable
length is exceeded. To achieve maximum cable length, this pin should
be left open (floating).
7
CLI
Analog
Output
Status Control Signal
. The Cable Length Indication (CLI) signal
provides approximate voltage representation of the amount of cable
being equalized.
12
CD
Digital
Output
Status Signal.
The Carrier Detect indicator is used as an output status
signal.
When the CD output is low, the carrier is present and the data output
is active.
When the CD output is high, the carrier is not present and the data
output is muted (latched to the last state). This indicates that the
maximum cable length as set by MCLADJ has been reached.
13
EQO_V
EE
Power
Input
Negative Supply
. Most negative power supply connection for Equalizer
output buffer stage.
16
EQO_V
CC
Power
Input
Positive Supply
. Most positive power supply connection for Equalizer
output buffer stage.
17, 18
SDO, SDO
ECL/PECL
compatible
Output
Serial Data Output
. Differential outputs. 50
pull up resistors are
included on chip.
Ensure that the trace length between the GS1545 and the GS1508
Cable driver is kept to a minimum and that a PCB trace characteristic
impedance of 50
is maintained between the GS1508 and the
GS1545. 50
end termination is recommended.
19
SDO_V
EE
Power
Input
Negative Supply
. Most negative power supply connection for serial
data output stage.
20
SDO_EN
Power
Input
Control Signal Input
. Used to enable or disable the serial output stage.
If a loop through function is not required, then this pin should be tied
to the most positive power supply voltage.
When SDO_EN is tied to the most negative power supply voltage, the
SDO, SDO outputs are enabled.
When SDO_EN is tied to the most positive power supply voltage, the
SDO, SDO outputs are disabled.
21
SDO_V
CC
Power
Input
Positive Supply
. Most positive power supply connection for serial data
output stage.
30, 31
SP_V
CC
Power
Input
Positive Supply.
Most positive power supply connection for serial to
parallel converter stage.
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