Texas Instruments AMC7812EVM-PDK, Руководство пользователя, Страница: 9 / 33

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AMC7812EVM Hardware Overview
4 AMC7812EVM Hardware Overview
The subsequent sections provide detailed information on the EVM hardware and jumper configuration
settings. To use the +24-V wall supply, set the AV
DD
and IOV
DD
jumper connections to the default
configuration listed in Table 4 . The table also displays the default configurations of all jumper connections
on the AMC7812EVM. Connect the USB extender cable from the SDM-USB-DIG to the PC, and the +24-
V wall adapter to the J5 terminal.
Table 4. Default Jumper Settings
Jumper Default Position Function
Selecting bus
JP1 Shunt on 1-2 • 1~2: (Default) SPI
• 2~3: (I2C)
Selecting DAC reference
• 1~2: (REF-OUT to REF-DAC)
JP2 Shunt on 1-2
• 3~4: (DACREF to REF-DAC)
• 5~6: (2.5 V REF to REF-DAC)
Selecting AV
DD
/DV
DD
voltage
JP3 Shunt on 1-2
• 1~2: Onboard 5-V supply
• 2~3: External supply
Selecting AV
CC
voltage
JP4 Shunt on 1-2 • 1~2: (On board 14-V supply)
• 2~3: (External supply)
Selecting IOV
DD
voltage
JP5 Shunt on 1-2 • 1~2: (On board VDUT)
• 2~3: (External supply)
• Installed: Onboard temp sensors
JP6 Not installed
• Not installed: External temperature sensors
Shunt on 5-6
J7 Default OPA to GND for protection
Shunt on 7-8
4.1 Electrostatic Discharge (ESD) Caution
Many of the components on the AMC7812EVM are susceptible to damage by ESD. Observe proper ESD
handling precautions when unpacking and handling the EVM, including the use of a grounded wrist strap
at an approved ESD workstation.
4.2 Connecting the Hardware
To connect the SDM-USB-DIG to the EVM board, align and firmly connect the female and male ends of
the 20-pin connectors (see
Figure 6 ). Verify the connection is snug, as loose connections may cause
intermittent operation.
9 SBAU177D – September 2010 – Revised August 2014 AMC7812EVM-PDK User’s Guide
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