32174 datasheet(4/881 Pages) RENESAS

tên linh kiện	32174

Giải thích chi tiết về linh kiện	32-bit RISC Single-chip Microcomputers

PDF	881 Pages

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nhà sản xuất	RENESAS [Renesas Technology Corp]

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How to read internal I/O register tables

➀ Bit Numbers: Each register is connected with an internal bus of 16-bit

wide, so the bit numbers of the registers located at even

addresses are D0-D7, and those at odd addresses are

D8-D15.

➁ State of Register at Reset: Represents the initial state of each register

immediately after reset with hexadecimal numbers

(undefined bits after reset are indicated each in column ➂.)

➂ At read:

... read enabled

? ... read disabled (read value invalid)

0 ... Read always as 0

1 ... Read always as 1

{ At write:

: Write enabled

∆ : Write enable conditionally

(include some conditions at write)

: Write disabled (Written value invalid)

Abit

Bit name

Function

Not assigned.

Abit

(...................)

0: -----

1: -----

Not implemented

in the shaded portion.

Bbit

Cbit

Bbit

(...................)

Cbit

(...................)

0: -----

1: -----

0: -----

1: -----

Registers represented with thick rectangles

are accessible only with halfwords or words

(not accessible with bytes).

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