Lantronix Qualcomm HDK8450 User Manual

HDK8450 (SM8450P) Processor User Guide Main board
80-28453-2 Rev. C Confidential – Qualcomm Technologies, Inc. and/or its affiliated companies – May Contain Trade Secrets 16
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
Function
DIP
Switch
Description
Notes
FASTBOOT(1)
S5701-3
Enable other boot configuration when
DIP switch turned on. Controlled by
GPIO158.
Default out of the box
configuration is OFF
FASTBOOT(2)
S5701-4
Enable other boot configuration when
DIP switch turned on. Controlled by
GPIO161.
Default out of the box
configuration is OFF
WDG_DISABLE
S5701-5
Enable WATCHDOG_DISABLE
when DIP switch turned on.
Controlled by GPIO164.
Default out of the box
configuration is OFF.
BUCK_PWR_CTRL
S5701-6
Manually disable external 5V/3.3V
buck output.
Default out of the box
configuration is OFF
M2_PWR_CTRL
S5701-7
Manually disable 1.8V and 3.3V
power suply
Default out of the box
configuration is OFF
AOC_DET
S5701-8
Manually connect USB-C headset
detect signal to CODEC
Default is disconnected.
Default out of the box
configuration is OFF.
The detailed configuration for boot sequence choice is listed in below table.
Table 3-4 Boot Sequence
FAST_BOOT
GPIO#
Boot Sequence
59
161
158
67
0b0000
0
0
0
0
Default: UFS0 -> SDC2 -> eDL(USB0)
0b0001
0
0
0
1
SDC2 -> UFS0 -> eDL(USB0)
0b0010
0
0
1
0
SDC2 -> eDL (USB0)
0b0011
0
0
1
1
USB0 boot only
0b0100
0
1
0
0
QSPI -> SDC2 -> eDL (USB0)
0b0101
0
1
0
1
SPI -> SDC2 -> eDL (USB0)
0b0110
0
1
1
0
UFS0 -> eDL (USB0)
0b0111
0
1
1
1
Same as Fastboot[3:0] = 0000
UFS0 -> SDC2 -> eDL(USB0)
The 8-bit switch of S5702 allows the user to do some general configuration.
Table 3-5 Dip Switch S5702 Configuration
Function
DIP
Switch
Description
Notes
SYS_PWR_CTRL
S5702-1
Manually disable external 3.9V buck
output. Default the buck is ON when
DC adapter is plugged in.
Default out of the box
configuration is OFF.
BATT_FET_CTRL
S5702-2
Manually disable battery supply path to
system. Default the path is controlled
by hardware automatically.
Default out of the box
configuration is OFF.
BATT_ID0
S5702-3
Connect BATT_ID to resistor 1(7.5K).
Default is disconnected.
Default out of the box
configuration is OFF
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Lantronix Qualcomm HDK8450 Specifications

General

Brand	Lantronix
Model	Qualcomm HDK8450
Category	Computer Hardware
Language	English