Xilinx ZC706 User Manual page 84

The ZC706 evaluation board supports both the internal XC7Z045 AP SoC sensor
measurements and the external measurement capabilities of the XADC. Internal
measurements of the die temperature, VCCINT, VCCAUX, and VCCBRAM are available.
Jumper J52 can be used to select either an external voltage reference (VREF) or on-chip
voltage reference for the analog-to-digital converter.
For external measurements an XADC header (J63) is provided. This header can be used to
provide analog inputs to the XC7Z045 AP SoC'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. Figure 1-38
X-Ref Target - Figure 1-38
XADC_VCC5V0
VCC1V5_PL
Table 1-39 describes the XADC header J40 pin functions.
Table 1-39: XADC Header J63 Pinout
Net Name
VN, VP
XADC_VAUX0P, N
XADC_VAUX8N, P
DXP, DXN
XADC_AGND
XADC_VREF
XADC_VCC5V0
XADC_VCC_HEADER
VCC1V5_PL
ZC706 Evaluation Board User Guide
UG954 (v1.5) September 10, 2015
shows the XADC header connections.
XADC_VN
XADC_VAUX0P
XADC_VAUX8N
XADC_DXP
XADC_VREF
XADC_GPIO_1
XADC_GPIO_3
Figure 1-38: XADC Header (J63)
J63 Pin
Number
1, 2 Dedicated analog input channel for the XADC.
Auxiliary analog input channel 0. Also supports use as I/O inputs when anti
3, 6
alias capacitor is not present.
Auxiliary analog input channel 8. Also supports use as I/O inputs when anti
7, 8
alias capacitor is not present.
9, 12 Access to thermal diode.
4, 5, 10 Analog ground reference.
11 1.25V reference from the board.
13 Filtered 5V supply from board.
14 Analog 1.8V supply for XADC.
15 VCCO supply for bank which is the source of DIO pins.
www.xilinx.com
J63
1 2
3 4
XADC_VAUX0N
5 6
7 8 XADC_VAUX8P
9 10
11 12
XADC_VCC_HEADER
13 14
15 16
17 18 XADC_GPIO_0
XADC_GPIO_2
19 20
GND
XADC_AGND XADC_AGND
Description
Feature Descriptions
XADC_VP
XADC_DXN
UG954_c1_38_041113
84
Send Feedback