| 1 | SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause |
|---|
| 2 | copyrights: |
|---|
| 3 | - Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de) |
|---|
| 4 | enabled-by: true |
|---|
| 5 | links: |
|---|
| 6 | - role: spec-member |
|---|
| 7 | uid: root |
|---|
| 8 | - role: spec-refinement |
|---|
| 9 | spec-key: interface-type |
|---|
| 10 | spec-value: register-block |
|---|
| 11 | uid: interface |
|---|
| 12 | spec-description: null |
|---|
| 13 | spec-example: null |
|---|
| 14 | spec-info: |
|---|
| 15 | dict: |
|---|
| 16 | attributes: |
|---|
| 17 | brief: |
|---|
| 18 | description: null |
|---|
| 19 | spec-type: interface-brief |
|---|
| 20 | definition: |
|---|
| 21 | description: null |
|---|
| 22 | spec-type: interface-register-block-member-directive-list |
|---|
| 23 | description: |
|---|
| 24 | description: null |
|---|
| 25 | spec-type: interface-description |
|---|
| 26 | identifier: |
|---|
| 27 | description: null |
|---|
| 28 | spec-type: interface-group-identifier |
|---|
| 29 | name: |
|---|
| 30 | description: | |
|---|
| 31 | It shall be the name of the register block. |
|---|
| 32 | spec-type: str |
|---|
| 33 | notes: |
|---|
| 34 | description: null |
|---|
| 35 | spec-type: interface-notes |
|---|
| 36 | registers: |
|---|
| 37 | description: null |
|---|
| 38 | spec-type: interface-register-list |
|---|
| 39 | register-block-group: |
|---|
| 40 | description: | |
|---|
| 41 | It shall be the name of the interface group defined for the register |
|---|
| 42 | block. For the group identifier see the ``identifier`` attribute. |
|---|
| 43 | spec-type: str |
|---|
| 44 | register-block-size: |
|---|
| 45 | description: | |
|---|
| 46 | If the value is present, then it shall be the size of the register |
|---|
| 47 | block in units of the address space granule. |
|---|
| 48 | spec-type: optional-int |
|---|
| 49 | register-prefix: |
|---|
| 50 | description: | |
|---|
| 51 | If the value is present, then it will be used to prefix register bit |
|---|
| 52 | field names, otherwise the value of the ``name`` attribute will be |
|---|
| 53 | used. |
|---|
| 54 | spec-type: optional-str |
|---|
| 55 | description: | |
|---|
| 56 | This set of attributes specifies a register block. A register block may |
|---|
| 57 | be used to specify the interface of devices which use a linear address |
|---|
| 58 | space. Register blocks consist of register block members specified by |
|---|
| 59 | the ``definition`` attribute. Register block members are either |
|---|
| 60 | instances of registers specified by the ``registers`` attribute or |
|---|
| 61 | instances of other register blocks specified by links with the |
|---|
| 62 | ${interface-register-block-include-role:/spec-name}. Registers consists |
|---|
| 63 | of bit fields (see ${interface-register-bits:/spec-name}. The register |
|---|
| 64 | block members are placed into the address space of the device relative to |
|---|
| 65 | the base address of the register block. Register member offests and the |
|---|
| 66 | register block size are specified in units of the address space granule. |
|---|
| 67 | The address space granule is usually 8-bits also known as one byte. |
|---|
| 68 | mandatory-attributes: all |
|---|
| 69 | spec-name: Register Block Item Type |
|---|
| 70 | spec-type: interface-register-block |
|---|
| 71 | type: spec |
|---|
![[RTEMS Logo]](/images/logo.png){kind=logo}
