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3.3 EVM Power Connector
3.4 EVM Analog I/O Connector
Serial EVM Sites
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Revision B interface boards also include jumpers W10 and W11 which allow the user to apply the FSX
signal (default) or DC_CNTLx signal (shunt pins 2-3) to pin 7 of the digital I/O connectors. W10 controls
the application of DC_FSXa or DC_CNTLa on J15, while W11 controls the application of DC_FSXb or
DC_CNTLb on J16.
Jumpers W8 and W9 allow the signals applied to EVM_INTa or EVM_INTb to be directly sourced from the
data-converter EVM when the shunts are installed on pins 1-2 (default). Moving the shunt on W8 to pins
2-3 sends the EVM interrupt signal through a single-gate inverter (U5) before being sent to DC-INTa on
the DSK. W9 controls the polarity of the signal applied to DC-INTc via U6.
The Interface Board provides a common power bus to both serial sites. The power connector used on the
Interface Board is a 10-pin male header. Two power connectors JP5 and JP6 are provided—each with the
same pinout. JP5 services serial Site 2, while JP6 services serial Site 1.
Table 5 shows the
power-connector voltages supplied to the EVM.
Table 5. EVM Power Connections—JP5 and JP6
Signal Pin Number Signal
+VA 1 2 -VA
+5VA 3 4 -5VA
DGND 5 6 AGND
+1.8VD 7 8 VD1
+3.3VD 9 10 +5VD
As mentioned previously, the analog I/O connectors act as pass-through connectors to the signal
conditioning sites.
Table 6 shows the analog I/O connections to the serial and parallel EVM sites.
Table 6. EVM Analog I/O Connections—J10 and J12
(1)
Signal Pin Number Signal
A0- 1 2 A0
A1- 3 4 A1
A2- 5 6 A2
A3- 7 8 A3
AGND 9 10 A4
AGND 11 12 A5
AGND 13 14 A6
VCOM 15 16 A7
AGND 17 18 REF-
AGND 19 20 REF+
(1)
J10 and J12 are also used for the parallel EVM site.
When applying differential signals to a data converter EVM, the signal pairs may be applied between pin
pairs 1-2, 3-4, 5-6, and 7-8, or pin pairs 2-4, 6-8, 10-12, and 14-16. The pin assignment for the signal pair
is determined by the EVM being used. See the specific EVM user’s guide for implementation details.
List of Tables 4 SLAU104C – May 2004 – Revised March 2009
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