AMD Vega 10 User Manual

3.19 AMD PowerXpress™ Interface
Table 3–21 AMD PowerXpress™ Interface
Pin
Name
Type PD/
PU
Description
PX_EN
O
(VDDAN_33)
PD
On/off regulator control signal for AMD ZeroCore Power feature (BACO
mode).
High (3.3 V) switches the regulators off (enter BACO mode).
Low (0 V) switches the regulators on. (Default)
PX_EN is tri-state before internal PWRGOOD is asserted and PERSTb is
de-asserted.
Can be left unconnected if not used.
3.20 Power and Ground Descriptions and Operating Conditions
Note:
• All power and ground pins must always be connected.
Table 3–22 Power and Ground Descriptions and Operating Conditions
Pin Name Voltage Description
VDDCI_MEM 0.9 V Isolated (clean) core power for the l/O logic of HBM2PHY.
FB_VDDCI_MEM - Provides VDDCI_MEM feedback path to the regulator.
If unused, connect to test point or leave unconnected.
VDDIO_MEM 1.35 V I/O power for the memory interface
FB_VDDIO_MEM_GPU - Provides VDDIO_MEM feedback path from HBM2PHY to the
regulator.
If unused, connect to test point or leave unconnected.
FB_VDDIO_MEM_HBM - Provides VDDIO_MEM feedback path from DRAM to the regulator.
If unused, connect to test point or leave unconnected.
VDDCR_HBM 1.35 V Power for internal logic of DRAM.
FB_VDDCR_HBM - Provides VDDCR_HBM feedback path to the regulator.
If unused, connect to test point or leave unconnected.
VPP 2.5 V Pump voltage of DRAM.
VDDCR_BACO 0.9 V Separate core power for the PCIe bus logic.
Can be supplied by the same voltage regulator that powers
VDD_080_EFUSE and VDD_080, but a bead should be used to
isolate VDDCR_BACO.
VDD_080_EFUSE 0.9 V Efuse internal supply.
Can be merged with VDD_080 and supplied by the same regulator.
VDD_080 0.9 V Supply for TMDP, PLL, PCIE, DFS, and XTAL.
VDD_18 1.8 V 1.8-V supply for TMDP, PLL, PCIE, CLKstretch, HBM2PHY, XTAL,
and TMON.
Must remain powered whenever VDDAN_33 is powered.
VDDAN_18 1.8 V 1.8-V supply for GPIO and AUX.
Must remain powered whenever VDDAN_33 is powered.
Can be merged and share the same regulator with VDD_18.
36 Signal Descriptions
"Vega 10" Databook
56006_1.00
© 2017 Advanced Micro Devices, Inc.
AMD Confidential - Do not duplicate.

AMD Vega 10 Specifications

General

Process Size	14 nm
Transistor Count	12.5 billion
Memory Type	HBM2
GPU	Vega 10
Stream Processors	4096
Texture Units	256
ROPs	64
Memory Size	8 GB
Die Size	486 mm²
Memory Bandwidth	483.8 GB/s
Compute Units	64
FP32 (float) Performance	12.66 TFLOPS
Memory Bus	2048-bit