70
VC707 Evaluation Board
UG885 (v1.2) February 1, 2013
Chapter 1:
VC707 Evaluation Board Features
details on the capabilities of the analog front end.
shows the XADC block
diagram.
The VC707 board supports both the internal FPGA sensor measurements and the external
measurement capabilities of the XADC. Internal measurements of the die temperature,
VCCINT, VCCAUX, and VCCBRAM are available. The VC707 board VCCINT and
VCCBRAM are provided by a common 1.0 V supply.
Jumper J42 can be used to select either an external differential voltage reference (VREF) or
on-chip voltage reference for the analog-to-digital converter.
For external measurements an XADC header (J19) is provided. This header can be used to
provide analog inputs to the FPGA's dedicated VP/VN channel, and to the
VAUXP[0]/VAUXN[0], VAUXP[8]/VAUXN[8] auxiliary analog input channels.
Simultaneous sampling of Channel 0 and Channel 8 is supported.
A user-provided analog signal multiplexer card can be used to sample additional external
analog inputs using the 4 GPIO pins available on the XADC header as multiplexer address
lines.
shows the XADC header connections.
X-Ref Target - Figure 1-34
Figure 1-34:
XADC Block Diagram
FPGA
U1
VAUX0N
VAUX0P
VAUX8N
VAUX8P
VREF (1.25V)
VREFN
VCCADC
GNDADC
VN
VP
DXP
DXN
UG885_c1_31_030512
100
Ω
1 nF
100
Ω
100
Ω
1 nF
100
Ω
To
Header
J49
Dual Use IO
(Analog/Digital)
100
Ω
1 nF
100
Ω
To
Header
J19
100 nF
XADC_AGND
REF3012
U35
Out
In
Gnd
J42
XADC_AGND
Internal
Reference
To Header J19
10
μ
F
Ferrite Bead
100 nF
1 nF
Ferrite Bead
J10
J9
Star Grid
Connection
J54
XADC_VCC
XADC_AGND
GND
VREFP
VREFP
ADP123
U10
Out
In
Gnd
XADC_AGND
1
μ
F
XADC_VCC Header J49
100 nF
XADC_AGND
To J54.3
XADC_VCC
J43
Ferrite Bead
VCCAUX
VCC5V0
10
μ
F
AV_5V To Header J19
1.8V 150 mV max
J53
Filter 5V Supply
Locate Components on Board
Close to
Package Pins
Close to
Package Pins
Содержание VC707
Страница 1: ...VC707 Evaluation Board for the Virtex 7 FPGA User Guide UG885 v1 2 February 1 2013...
Страница 74: ...74 www xilinx com VC707 Evaluation Board UG885 v1 2 February 1 2013 Chapter 1 VC707 Evaluation Board Features...
Страница 94: ...94 www xilinx com VC707 Evaluation Board UG885 v1 2 February 1 2013 Appendix D Board Setup...
Страница 96: ...96 www xilinx com VC707 Evaluation Board UG885 v1 2 February 1 2013 Appendix E Board Specifications...