ZC706 Evaluation Board User Guide
76
UG954 (v1.5) September 10, 2015
Feature Descriptions
shows the XADC external MUX block diagram.
which lists the ZC706 XADC power system voltage and current measurement
details for the external MUX U6.
X-Ref Target - Figure 1-34
Figure 1-34:
XADC External MUX Block Diagram
Notes:
1. _XADC_P/N = Remote Voltage Sense
2. _XADC_CS_P/N = Current Sense From OP Amp
UG954_c1_34_041113
U1
U6
3.3 Scaled to 0.825V
ADG707BRU
Bank 35
ADIP L13
DA
DB
10PF
A0
A1
A2
3.01K
1.00K
GND
49.9
49.9
A[2:0]
P14 17
P15 18
P16 19
S1A/B
S2A/B
S3A/B
S4A/B
S5A/B
S6A/B
S7A/B
S8A/B
VCC3V3_FPGA_SENSE_P
VCC3V3_FPGA_XADC_P
VCC3V3_FPGA_SENSE_N
VADJ 2.5V Scaled to 0.625V
3.01K
1.00K
GND
VCC3V3_FPGA_SENSE_P
VCC3V3_FPGA_XADC_P
VCC3V3_FPGA_SENSE_N
Scaled to 0.75V
3.01K
1.00K
GND
VCC3V3_FPGA_SENSE_P
VCC3V3_FPGA_XADC_P
VCC3V3_FPGA_SENSE_N
VCCINT_XADC_CS_P/N
VCCAUX_XADC_CS_P/N
VCC1V5_PL_XADC_P/N
VCC1V5_PL_XADC_CS_P/N
VADJ_FPGA_XADC_P/N
VADJ_FPGA_XADC_CS_P/N
VCC3V3_PL_XADC_P/N
VCC3V3_PL_XADC_CS_P/N
AD1N K13
U16
XC7Z045
TCA6416APWR
12C Port
Expander
Table 1-35:
XADC Measurements through MUX U6
Meas.
Type
Rail Name
Current
Range
Isense Op Amp
Schematic Net Name
8-to-1 MUX U6
MUX A[2:0]
Reference
Designator
Gain
Vo Range
Pin
Num
Pin
Name
V
VCCINT
NA
NA
NA
NA
XADC INTERNAL
NA
NA
NA
I
VCCINT CS
0A-8A
U69
20
0V-0.8V
VCCINT_XADC_CS_P
19
S1A
000
VCCINT_XADC_CS_N
11
S1B
V
VCCAUX
NA
NA
NA
NA
XADC INTERNAL
NA
NA
NA
I
VCCAUX CS
0A-4A
U68
50
0V-1V
VCCAUX_XADC_CS_P
20
S2A
001
VCCAUX_XADC_CS_N
10
S2B
V
VCC1V5_PL
NA
VCC1V5_PL REMOTE SENSE DIVIDED
TO DELIVER 0.75V ON
VCC1V5_PL_XADC_P
VCC1V5_PL_XADC_P
21
S3A
010
VCC1V5_PL_SENSE_N
9
S3B
I
VCC1V5_PL CS
0A-2A
U67
100
0V-1V
VCC1V5_PL_XADC_CS_P
22
S4A
011
VCC1V5_PL_XADC_CS_N
8
S4B