VC7203 GTX Transceiver Characterization Board www.xilinx.com 11
UG957 (v1.3) October 17, 2014
Detailed Description
The VC7203 board uses power regulators and PMBus compliant digital PWM system
controllers from Texas Instruments to supply the FPGA logic and utility voltages listed in
Table 1-2. The board can also be configured to use an external bench power supply for each
voltage. See Using External Power Sources.
Table 1-2: Onboard Power System Devices
Device Part
Number
Reference
Designator
Description
Power Rail
Net Name
Voltage
FPGA Logic
UCD9248PFC
U9
Digital PWM system controller, PMBUS address 52
PTD08A020W
U5, U51
Adjustable
(1)
switching regulator, 40A (two phases at 20A/phase),
0.6V to 3.6V
VCCINT 1.0V
PTD08A010W U6 Adjustable
(1)
switching regulator, 10A, 0.6V to 3.6V VCCAUX 1.8V
PTD08A010W U56 Adjustable
(1)
switching regulator 10A, 0.6V to 3.6V VCCBRAM 1.0V
PTD08A020W
U50
Adjustable
(1)
switching regulator, 40A (two phases @ 20A/phase),
0.6V to 3.6V
VCCAUX_IO 1.8V (default)
UCD9248PFC
U10
Digital PWM system controller, PMBUS address 53
PTD08A010W
U57
Adjustable switching regulator, 10A, 0.6V to 3.6V
VCCO_HP 1.8V
PTD08A010W
U58
Adjustable switching regulator, 10A, 0.6V to 3.6V
VCCO_HR 1.8V (default)
Utility
PTH12060W
U2
Fixed switching regulator, 10A
UTIL_5V0 5.0V
PTH12020W
U13
Fixed switching regulator, 18A
UTIL_3V3 3.3V
PTH12020W
U52
Fixed switching regulator, 18A
UTIL_2V5 2.5V
TPS75925
U62
Fixed LDO regulator, 3A
VCCO_0 2.5V
GTX Transceivers (monitoring only)
UCD9248PFC
(2)
U11
Digital PWM system controller, PMBUS address 54
XADC
(3)
ADP123
U43
Fixed LDO regulator
VCCADC_ADP 1.8V
REF3012
U45
Fixed LDO regulator
VREF_3012 1.25V
System ACE Tool SD
ADP123
U21
Fixed LDO regulator
VCC_1V2 1.2V
Notes:
1. The output voltages of regulators controlled by a UCD9248 can be reprogrammed using the Texas Instruments Fusion Digital Power
Designer application (www.ti.com/tool/fusion_digital_power_designer
). However, extreme caution must be taken when
attempting to modify any of the onboard regulators. An incorrectly programmed regulator can damage onboard components.
2.
The UCD9248PFC (U11) at Address 54 monitors MGTAVCC, MGTAVTT, and MGTVCCAUX rail voltage and current levels which can be
observed in real time using the Texas Instruments Fusion Digital Power Designer application (see Monitoring Voltage and Current,
page 12). Transceiver supply voltages cannot be changed from this controller.
3. For information on XADC see 7 Series FPGAs and Zynq-7000 All Programmable SoC XADC Dual 12-Bit 1 MSPS Analog-to-Digital
Converter User Guide (UG480) [Ref 1]