GS9062(2005) Просмотр технического описания (PDF) - Gennum -> Semtech
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GS9062 Datasheet PDF : 46 Pages
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GS9062 Data Sheet
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name
Timing
Type
Description
67
69
72
73, 74
75
76
77
78
79
80
DETECT_TRS
PCLK
LOCKED
VCO, VCO
VCO_GND
VCO_VCC
LF
CP_CAP
LB_CONT
CP_GND
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to select the timing mode of the device.
When set HIGH, the device will lock the internal flywheel to the
embedded TRS timing signals in the parallel input data.
When set LOW, the device will lock the internal flywheel to the
externally supplied H, V, and F input signals.
–
Input
PARALLEL DATA BUS CLOCK
Signal levels are LVCMOS/LVTTL compatible.
SD 20-bit mode
PCLK = 13.5MHz
SD 10-bit mode
PCLK = 27MHz
Synchronous
with PCLK
Output
STATUS SIGNAL OUTPUT
Signal levels are LVCMOS / LVTTL compatible.
The LOCKED signal will be HIGH whenever the device has
correctly received and locked to SMPTE compliant data in
SMPTE mode or DVB-ASI compliant data in DVB-ASI mode.
It will be LOW otherwise.
Analog
Input
Differential inputs for the external VCO reference signal. For
single ended devices such as the GO1525, VCO should be AC
coupled to VCO_GND.
–
Output Power Ground reference for the external voltage controlled oscillator.
Connect to pins 2, 4, 6, and 8 of the GO1525. This pin is an
output.
Should be isolated from all other grounds.
–
Output Power Power supply for the external voltage controlled oscillator.
Connect to pin 5 of the GO1525. This pin is an output.
Should be isolated from all other power supplies.
Analog
Output
Control voltage to external voltage controlled oscillator. Nominally
+1.25V DC.
Analog
Input
PLL lock time constant capacitor connection. Normally connected
to VCO_GND through 2.2nF.
Analog
Input
Control voltage to set the loop bandwidth of the integrated
reclocker.
–
Power
Ground connection for the charge pump. Connect to analog
GND.
22209 - 5 May 2005
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