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6.2
Input/Output Connectors
6.3
Parallel Port
6.4
DC Power Requirements
7
Demo Kit Test Configuration
Demo Kit Test Configuration
Table 3. Jumper List (continued)
JUMPER
LABEL
FUNCTION
CONDITION
DEFAULT
J15 pin 27
PLL_PWD
Power down the TRF3750
Powered
Pin 26, 27
J15 pin 29
RESET
Resets the DAC5687 when low
Open
Removed
The input and output connections are shown in
Table 4. Input/Output Connections
REFERENCE DESIGNATOR
CONNECTOR TYPE
DESCRIPTION
J13
34-pin header
I channel data input
J14
34-pin header
Q channel data input
J9
SMA
RF output
J10
SMA
Optional LO input
J8
SMA
Optional external reference
J2
SMA
Output clock 1 from CDCM7005
J3
SMA
Output clock 2 from CDCM7005
J5
SMA
Optional I out A from DAC5687
J19
SMA
Optional Q out B from DAC5687
J6
SMA
Input for external VCXO for CDCM7005
J7
SMA
PLL lock status on DAC5687
J4
SMA
Phase synchronization on DAC5687
RF shield covers should be in place over the synthesizer section and the RF modulator section. These
shields provide isolation of the RF sections on the board.
The TSW3000 Demo Kit contains a 25-pin parallel port connector (J1) to interface to a standard computer
parallel port. Programming of the CDCM7005, DAC5687, and TRF3750 are accomplished through this
port.
The Demo Kit requires a single dc-voltage supply that is nominally 6 V. From that supply, the 5 V, 3.3 V,
and 1.8 V required for the devices on the board are generated internally through linear voltage regulators.
It is possible to use a higher input voltage; however, care should be taken not to over dissipate the
on-board voltage regulators.
SLWU013A – March 2004 – Revised September 2005
17
