Arm® Musca-S1 Test Chip and Board Technical Reference Manual

Table of Contents

About this book
Intended audience
Using this book
Additional reading
Feedback on this product
Feedback on content
1 Introduction
1.1 Precautions
1.1.1 Ensuring safety
1.1.2 Operating temperature
1.1.3 Preventing damage
1.2 About the Musca-S1 test chip and board
1.3 The Musca‑S1 development board at a glance
1.4 Getting started
2 Hardware description
2.1 Board hardware
2.2 Musca-S1 test chip
2.2.1 Overview of the Musca-S1 test chip
2.2.2 Test chip multiplexed I/O
2.3 Software, firmware, board, and tools setup
2.4 User components and status LEDs
2.5 Clocks
2.6 CryptoCell™-312 and One Time Programmable security system
2.7 Resets and powerup
2.8 Power
2.9 I2C interfaces and sensors
2.10 Arduino Expansion Shield interface
2.11 Boot memory
2.12 DAPLink controller
2.13 Debug
3 Programmers model
3.1 About this programmers model
3.2 Memory maps
3.2.1 Code (AHB expansion) and SRAM regions memory map
3.2.2 Peripheral (expansion) region memory map
3.2.3 Non-secure Expansion 1 region memory map
3.2.4 Secure Expansion 1 region memory map
3.2.5 System region memory map
3.2.6 Complete memory map
3.3 Processor elements
3.3.1 Private processor regions
3.3.2 Instruction cache configuration interface registers
3.3.3 Processor cache programming
3.3.4 Ensuring the cache handles memory modifications
3.3.5 Interrupts
3.4 Base element
3.4.1 Internal SRAM regions
3.4.2 Base peripheral regions
3.4.3 CMSDK timers
3.4.4 CMSDK dual timer
3.4.5 CMSDK watchdog timers
3.4.6 Secure Privilege Control Block
3.4.7 Non-secure Privilege Control Block
3.4.8 Message Handling Unit
3.4.9 AHB5 TrustZone Memory Protection Controllers
3.5 System control element
3.5.1 System control regions
3.5.2 System Information Register Block
3.5.3 System Control Register Block
3.5.4 CMSDK timer
3.5.5 CMSDK watchdog timer
3.6 SSE-200 subsystem debug system
3.7 Real Time Clock
3.8 General-purpose timer
3.8.1 GPTRESET Register
3.8.2 GPTINTM Register
3.8.3 GPTINTC Register
3.8.4 GPTALARM0 Register
3.8.5 GPTALARM1 Register
3.8.6 GPTINTR Register
3.8.7 GPTCOUNTER Register
3.9 PVT sensor registers
3.9.1 PVT sensor control registers summary
3.10 CryptoCell™-312 and One-Time Programmable (OTP) secure memory locations
3.11 Serial Configuration Control registers
3.11.1 IOMUX registers
3.11.2 SCC registers summary
3.12 UART control registers
3.13 GPIO control registers
3.14 Third-party IP
A Signal descriptions
A.1 Arduino Expansion Shield connectors
A.2 Debug connector
A.3 USB connector
B PVT sensors
B.1 PVT sensors
C IP configuration
C.1 IP configuration
D Specifications
D.1 Electrical specifications
E Revisions
E.1 Revisions

Release Information

Document History
Issue Date Confidentiality Change
0000-00 02 December 2019 Non-Confidential First issue

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Product Status

The information in this document is Final, that is for a developed product.

Web Address

Conformance Notices

This section contains conformance notices.

Federal Communications Commission Notice

This device is test equipment and consequently is exempt from part 15 of the FCC Rules under section 15.103 (c).

CE Conformity

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The Waste Electrical and Electronic Equipment (WEEE) marking, that is, the crossed out wheelie-bin figure, indicates that this product must not be disposed of with general waste within the European Union. To prevent possible harm to the environment from uncontrolled waste disposal, the user is required to recycle the product responsibly to promote reuse of material resources. To comply with EU law, you must dispose of the product in one of the following ways:

  • Return it to the distributer where it was purchased. The distributer is required to arrange free collection when requested.
  • Recycle it using local WEEE recycling facilities. These facilities are now very common and might provide free collection.
  • If purchased directly from Arm, Arm provides free collection. Please e-mail for instructions.

The CE Declaration of Conformity for this product is available on request.

The system should be powered down when not in use.

It is recommended that ESD precautions be taken when handling this product.

The product generates, uses, and can radiate radio frequency energy and may cause harmful interference to radio communications. There is no guarantee that interference will not occur in a particular installation. If this equipment causes harmful interference to radio or television reception, which can be determined by turning the equipment off or on, you are encouraged to try to correct the interference by one or more of the following measures:

  • Ensure attached cables do not lie across any sensitive equipment.
  • Reorient the receiving antenna.
  • Increase the distance between the equipment and the receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.


It is recommended that wherever possible shielded interface cables be used.
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