MB91F465KB datasheet(24/86 Pages) CYPRESS

부품명	MB91F465KB

상세설명	32-bit RISC, load/store architecture, five-stage pipeline

PDF	86 Pages

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제조업체	CYPRESS [Cypress Semiconductor]

홈페이지	http://www.cypress.com

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24 / 86 page

MB91460K Series

Document Number: 002-04602 Rev. *A

Page 24 of 86

8.4

Registers

8.4.1

General-purpose register

Registers R0 to R15 are general-purpose registers. These registers can be used as accumulators for computation operations and as

pointers for memory access.

Of the 16 registers, enhanced commands are provided for the following registers to enable their use for particular applications.

R13 : Virtual accumulator

R14 : Frame pointer

R15 : Stack pointer

Initial values at reset are undefined for R0 to R14. The value for R15 is 00000000H (SSP value).

8.4.2

PS (Program Status)

This register holds the program status, and is divided into three parts, ILM, SCR, and CCR.

All undefined bits

(-) in the diagram are reserved bits. The read values are always “0”. Write access to these bits is invalid.

. . .

XXXX XXXXH

0000 0000H

XXXX XXXXH

. . .

R12

R13

R14

R15

. . .

32 bits

Initial value

Bit position

→

bit 20

bit 0

bit 7

bit 8

bit 10

bit 16

ILM

SCR

CCR

bit 31

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