39 lines
2.0 KiB
Markdown
39 lines
2.0 KiB
Markdown
来源：PM0214 Rev 10，Page 12
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# About this document
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This document provides the information required for application and system-level software development. It does not provide information on debug components, features, or operation.
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This material is for microcontroller software and hardware engineers, including those who have no experience of Arm products.
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This document applies to Arm®(a)-based devices.
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## 1.1 Typographical conventions
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The typographical conventions used in this document are:
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## 1.2 List of abbreviations for registers
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The following abbreviations are used in register descriptions:
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| Abbreviation | Meaning |
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|--------------|---------|
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| read/write (rw) | Software can read and write to these bits. |
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| read-only (r) | Software can only read these bits. |
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| write-only (w) | Software can only write to this bit. Reading the bit returns the reset value. |
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**Typographical conventions:**
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| Style | Meaning |
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|-------|---------|
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| *italic* | Highlights important notes, introduces special terminology, denotes internal cross-references, and citations. |
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| `<` and `>` | Enclose replaceable terms for assembler syntax where they appear in code or code fragments. For example: `LDRSB<cond> <Rt>, [<Rn>, #<offset>]` |
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| **bold** | Highlights interface elements, such as menu names. Denotes signal names. Also used for terms in descriptive lists, where appropriate. |
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| `monospace` | Denotes text that you can enter at the keyboard, such as commands, file and program names, and source code. |
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| `monospace` (underlined) | Denotes a permitted abbreviation for a command or option. You can enter the underlined text instead of the full command or option name. |
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| *monospace italic* | Denotes arguments to monospace text where the argument is to be replaced by a specific value. |
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| **`monospace bold`** | Denotes language keywords when used outside example code. |
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> Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
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> 原始图片：imgs/page_12.png（无图则注明无图） |