# References Source: [https://docs.qualcomm.com/doc/80-70014-12/topic/references.html](https://docs.qualcomm.com/doc/80-70014-12/topic/references.html) ## Related documents Source: [https://docs.qualcomm.com/doc/80-70014-12/topic/references.html](https://docs.qualcomm.com/doc/80-70014-12/topic/references.html) | Title | Number | | --- | --- | | **Qualcomm Technologies, Inc.** | **Qualcomm Technologies, Inc.** | | [Qualcomm Linux Security
Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70014-11) | 80-70014-11 | | [Qualcomm Linux Boot
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Documentation](https://qpm.qualcomm.com/assets/userguide/external/book/0.UserGuide/UserGuide.html) | [Qualcomm® Package Manager 3
Documentation](https://qpm.qualcomm.com/assets/userguide/external/book/0.UserGuide/UserGuide.html) | | [Arm System Memory Management Unit
Architecture Specification, IHI0062D](https://developer.arm.com/documentation/ihi0062/dc) | [Arm System Memory Management Unit
Architecture Specification, IHI0062D](https://developer.arm.com/documentation/ihi0062/dc) | | [https://docs.kernel.org/trace/coresight/coresight-perf.html](https://docs.kernel.org/trace/coresight/coresight-perf.html) | [https://docs.kernel.org/trace/coresight/coresight-perf.html](https://docs.kernel.org/trace/coresight/coresight-perf.html) | | [https://docs.kernel.org/trace/coresight/index.html](https://docs.kernel.org/trace/coresight/index.html) | [https://docs.kernel.org/trace/coresight/index.html](https://docs.kernel.org/trace/coresight/index.html) | | [https://perf.wiki.kernel.org/index.php/Tutorial](https://perf.wiki.kernel.org/index.php/Tutorial) | [https://perf.wiki.kernel.org/index.php/Tutorial](https://perf.wiki.kernel.org/index.php/Tutorial) | | [https://man7.org/linux/man-pages/man1/ltrace.1.html](https://man7.org/linux/man-pages/man1/ltrace.1.html) | [https://man7.org/linux/man-pages/man1/ltrace.1.html](https://man7.org/linux/man-pages/man1/ltrace.1.html) | | [https://man7.org/linux/man-pages/man1/gdb.1.html](https://man7.org/linux/man-pages/man1/gdb.1.html) | [https://man7.org/linux/man-pages/man1/gdb.1.html](https://man7.org/linux/man-pages/man1/gdb.1.html) | | [https://man7.org/linux/man-pages/man5/core.5.html](https://man7.org/linux/man-pages/man5/core.5.html) | [https://man7.org/linux/man-pages/man5/core.5.html](https://man7.org/linux/man-pages/man5/core.5.html) | | [https://man7.org/linux/man-pages/man1/gdbserver.1.html](https://man7.org/linux/man-pages/man1/gdbserver.1.html) | [https://man7.org/linux/man-pages/man1/gdbserver.1.html](https://man7.org/linux/man-pages/man1/gdbserver.1.html) | | [https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu](https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu) | [https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu](https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu) | | [https://man7.org/linux/man-pages/man8/crash.8.html](https://man7.org/linux/man-pages/man8/crash.8.html) | [https://man7.org/linux/man-pages/man8/crash.8.html](https://man7.org/linux/man-pages/man8/crash.8.html) | ## Acronyms and terms Source: [https://docs.qualcomm.com/doc/80-70014-12/topic/references.html](https://docs.qualcomm.com/doc/80-70014-12/topic/references.html) | Acronym or term | Definition | | --- | --- | | aDSP | Application Digital Signal Processor (aDSP) | | AHB | Advanced High-performance Bus | | AMSS | Advanced Mobile Subscriber Station | | AOP | Always-on-processor | | APSS/APPS | Application Processor Subsystem | | cDSP | Compute DSP | | CMA | Contiguous Memory Allocator | | CNoC | Config Network on chip | | DCC | Data capture and compare | | DDR | Double Data Rate | | FAR | Fault Address Register | | FIQ | Fast interrupt request | | FSR | Fault Status Register | | GDB | GNU debugger | | GFP | Get free pages | | HLOS | High-level OS | | JTAG | Joint Test Action Group | | LPASS | Low-Power Audio Subsystem | | mDSP | Modem DSP | | MPM | Mobile Station Modem Power Manager | | NMI | Non-maskable interrupt | | NoC | Network-on-chip
It is a bus connecting multiple masters and slaves.
There are many types of NoCs such as System NoC (SNoC), Config NoC
(CNoC), Multimedia NoC (MMNoC). | | PCB | Printed circuit board | | PMIC | Power Management IC
PMIC is the power supply block of the
chipset. | | PS\_HOLD | It is a Power Supply Hold signal line from the chipset to the
PMIC. | | QCAP | Qualcomm Crash Analysis Portal | | QDSS | Qualcomm Debug Subsystem | | RPMh | Resource Power Management Hardening
It is part of AOP and used in
regulating the power on the device. | | SDI | Software Debug Image
This is a debug feature in the TrustZone to
capture all subsystems core context in the RAM dump during an
abnormal reset. For more information on RAM dump, see [RAM dump](https://docs.qualcomm.com/bundle/publicresource/topics/80-70014-12/Debug-overview.html#ram-dump). | | SNoC | System Network on Chip | | SPM | Subsystem Power Manager | | SMMU | System Memory Management Unit | | SS | Subsystem | | T32 | Trace32 software from Lauterbach | | TBU | Translation Buffer Unit. Arm SMMU IP component. | | TCM | Tightly coupled memory | | TSENS | Temperature Sensor
It captures the junction temperature of the
chipset. | | TZ | TrustZone | | WD | Watchdog
A watchdog is a fixed-length counter that enables a
system to recover from an unexpected hardware or software
catastrophe. | | WD Bark | Watchdog timeout that results in a bark interrupt and kernel
panic. | | WB Bite | Watchdog timeout that occurs if a watchdog is not petted even after
WD Bark, resulting in a bite interrupt in secure mode. This further
leads to a system reset. | | WPSS | WLAN Processor Subsystem | | XBL | eXtensible BootLoader | | xPU | External Protection Unit
It is a module in the TrustZone subsystem
and is meant for protecting memory, address, and
register. | Last Published: Jul 12, 2024 [Previous Topic Debug non-HLOS](https://docs.qualcomm.com/bundle/publicresource/80-70014-12/topics/debug-non-hlos-subsystems.md)