Datasheet > R4F20102RDFA

R4F20102RDFA

更新时间： 2023-08-15 00:00:00

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
1158页	5870K
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R4F20102RDFA 数据手册

3. Description of Registers

Each register description includes a bit chart, illustrating the arrangement of bits, and a table of

bits, describing the meanings of the bit settings. The standard format and notation for bit charts

and tables are described below.

[Bit Chart]

Bit:

⎯

ASID2 ASID1 ASID0

⎯

ACMP2 ACMP1 ACMP0 IFE

Initial value:

R/W:

R/W

(1)

(2)

(3)

(4)

(5)

[Table of Bits]

Bit

Bit Name Initial Value R/W Description

−

Reserved

These bits are always read as 0.

13 to 11

ASID2 to

ASID0

All 0

R/W Address Identifier

These bits enable or disable the pin function.

−

Reserved

This bit is always read as 0.

−

Reserved

This bit is always read as 1.

Note: The bit names and sentences in the above figure are examples, and have nothing to do with the contents of this

manual.

(1) Bit

Indicates the bit number or numbers.

In the case of a 32-bit register, the bits are arranged in order from 31 to 0. In the case

of a 16-bit register, the bits are arranged in order from 15 to 0.

(2) Bit name

Indicates the name of the bit or bit field.

When the number of bits has to be clearly indicated in the field, appropriate notation is

included (e.g., ASID[3:0]).

A reserved bit is indicated by "−".

Certain kinds of bits, such as those of timer counters, are not assigned bit names. In such

cases, the entry under Bit Name is blank.

(3) Initial value

Indicates the value of each bit immediately after a power-on reset, i.e., the initial value.

0: The initial value is 0

1: The initial value is 1

−: The initial value is undefined

(4) R/W

For each bit and bit field, this entry indicates whether the bit or field is readable or writable,

or both writing to and reading from the bit or field are impossible.

The notation is as follows:

R/W: The bit or field is readable and writable.

R/(W):The bit or field is readable and writable.

However, writing is only performed to flag clearing.

The bit or field is readable.

"R" is indicated for all reserved bits. When writing to the register, write

the value under Initial Value in the bit chart to reserved bits or fields.

The bit or field is writable.

(5) Description

Describes the function of the bit or field and specifies the values for writing.

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