Digital Serial Interface Pinout; Jumper Settings And Functions - Texas Instruments AMC7823 EVM User Manual

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The analog signals can be applied directly to the J1T header connector, either single-ended or
differentially. To apply a differential signal into the AMC7823, make sure to disconnect the jumper from
W5 so that the AMC7823 can accommodate the signals correctly. For single-ended signal input, make
sure that W5 is shorted so that the signal ground is connected back to the analog ground.
The DAC outputs can be monitored from the J5 header connector directly. See the schematic and printed
circuit board silkscreen for details.
3.3 Serial EEPROM
This EVM includes a 64-kbit I
future use with PC graphical user interface applications using a USB–MODEVM interface board or other
similar board.
The serial EEPROM is not used by the EVM itself, so it is not discussed further in this user's guide.
3.4 Jumper Settings
Table 3 lists the function of each specific EVM jumper setting.
Reference Jumper Setting
1
1
W1
1
SLAU171 – November 2005
1 2
CS ELDAC
3
4
SCLK DGND
5
6
CLKR GPIO1_B
7
8
FSX GPIO2_B
9 10
FSR DGND
11 12
MOSI GALR
13 14
MISO RESET
15 16
DAV SCL
17 18
TOUT DGND
19 20
NC SDA
J2
Figure 10. Digital Serial Interface Pinout
2
C serial EEPROM, U4, to store firmware data. It is intended particularly for
Table 3. Jumper Settings and Functions
3
External reference input voltage via TP1 is selected to set the range of the ADC and the DAC.
3
Internal reference voltage is used to set the range of the ADC and the DAC.
3
External reference input voltage via REF1 or REF2, as selected by W7, is routed to the reference
input pin of the AMC7823 to set the range of the ADC and the DAC.
1 2
NC GPIO 0_A
3
4
BCLK DGND
5
6
NC GPIO 1_A
7
8
LRCLK GPIO 2_A
9 10
NC DGND
11 12
NC NC
13 14
NC
NC
15 16
NC SCL
17 18
NC DGND
19 20
GPIO5_A SDA
J4
Function
EVM Operation
AMC7823 Evaluation Module 11