GS9090 Просмотр технического описания (PDF) - Gennum -> Semtech
Номер в каталоге
Компоненты Описание
Список матч
GS9090 Datasheet PDF : 70 Pages
| |||
GS9090 Data Sheet
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name
Timing
Type Description
51
FW_EN
52
FIFO_EN
53
VCO_VDD
54
LB_CONT
55
VCO_GND
56
LF+
–
Center Pad
Non
Input
Synchronous
Non
Input
Synchronous
Analog
Analog
Analog
Analog
–
Input
Power
Input
Input
Power
Input
Power
CONTOL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
Used to enable or disable the noise immune flywheel of the device.
When set HIGH, the internal flywheel is enabled. This flywheel is used
in the extraction of timing signals, the generation of TRS signals, the
automatic detection of video standards, and in manual switch line lock
handling.
When set LOW, the internal flywheel is disabled. Timing based TRS
errors will not be detected.
CONTOL SIGNAL INPUT
Signal levels are LVCMOS / LVTTL compatible.
Used to enable / disable the internal FIFO.
When FIFO_EN is HIGH, the internal FIFO will be enabled. Data will be
clocked out of the device on the rising edge of the RD_CLK input pin if
the FIFO is in video mode or DVB-ASI mode.
When FIFO_EN is LOW, the internal FIFO is bypassed and parallel
data is clocked out on the rising edge of the PCLK output.
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
the Typical Application Circuit (Part B) on page 67.
Connect to GND following the Recommended PCB Footprint on
page 69
28201 - 1 July 2005
11 of 70
Share Link: 