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Board View and Connector Location
3.1 Board View and Connector Location
Figure 3−1. Board View
3.2 Hardware Configuration
3.2.1
Power Supply (P1, P2)
3.2.2
Onboard Switches and Indicators (SW1−SW2, D1−D4)
3-2
This section describes the board configuration using on-board jumpers and
solder bridges.
Supply 3.3 V ±10% on P1 and P2 using a stabilized external power supply.
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WARNING: Never supply more than 3.6 V on P1.
J
Push SW1 to enter the power-down mode of the CDCM7005 device. Then
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all current sources are switched off, all outputs are switched into 3-state,
and all dividers (M, N, and P) are reset to default.
Push SW2 to enter the reset mode of the device. The charge pump (CP)
-
is switched to 3-state and all counters (N, M, P) are rest to zero (the initial
divider settings are maintained in SPI.
The three status outputs of the CDCM7005 are fed to LED indicators. D1
-
on indicates a valid reference input clock signal. D2 is on if the VC(X)O
input clock is valid and D3 turns on if the PLL has been locked.
D4 indicates power supply
-
Note:
In case of a low input impedance of the VC(X)O control voltage input, there
is a possibility D3 may not turn on to indicate locking.
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