Amd Svi2 Master Interface; Panel Control Interface; Table 3-11 Amd Svi2 Master Interface; Table 3-12 Panel Control Interface - AMD Vega 10 Data Book

Signal Descriptions

3.10 AMD SVI2 Master Interface

Table 3–11 AMD SVI2 Master Interface
Pin Name
GPIO_SVC0
GPIO_SVD0
GPIO_SVT0
Note: On "Vega 10", the boot voltage of the SVI2 regulator is 0.9 V controlled by the GPU;
overwriting of boot-VID on the PCB is not allowed. If the second domain of the SVI2 regulator
is used to power a GPU rail (e.g., VDDCR_HBM/VDDIO_MEM) that cannot work with 0.9 V,
contact AMD for alternative solutions.

3.11 Panel Control Interface

Note: All signals in this interface can be unconnected if not used. This interface may
be used for eDP panels.
Table 3–12 Panel Control Interface
Pin Name
DIGON
BL_PWM_DIM
BL_ENABLE
© 2017 Advanced Micro Devices, Inc.
AMD Confidential - Do not duplicate.
Type
I/O
1.8 V
(VDDAN_18)
I/O
1.8 V
(VDDAN_18)
I/O
1.8 V
(VDDAN_18)
Type PD/PU
O
Controls panel digital power on/off.
3.3 V PD
Note: External pull-down resistor is recommended.
(VDDAN_33)
LCD PWM (Pulse Width Modulated) output for adjustment of
LCD brightness.
O
Active high.
3.3 V PD
BL_PWM_DIM can be used to control backlight on/off (backlight
(VDDAN_33)
enable) by setting BL_PWM_CNTL.BL_PWM_EN = 0.
Note: External pull-down resistor is recommended.
Controls backlight on/off.
I/O
PD-
Active high.
3.3 V
reset
(VDDAN_33)
Note: External pull-down resistor is recommended.
PD/PU
Serial VID clock.
Push-pull clock output for the SVI2
On-die PU
data bus; driven by the GPU. Point-to-
point connection to the SVI2 voltage
regulator controller.
Serial VID data.
Push-pull data output for the SVI2 data
bus; driven by the GPU. Sets the
voltage, power-state indicator, load-
On-die PD
line slope, and voltage offsets for two
voltage rails. Point-to-point connection
to the SVI2 voltage regulator
controller.
Serial VID telemetry.
Push-pull data input driven by the SVI2
voltage regulator controller.
Continuously streams the voltage and
-
current telemetry information to the
GPU. Also provides an indication when
positive voltage transitions are
complete (VOTFC).
Description
Description
"Vega 10" Databook
56006_1.00
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