HD64F7047 datasheet(57/764 Pages) RENESAS

Part #	HD64F7047

Description	Renesas 32-Bit RISC Microcomputer SuperHTMRISC engine Family/SH7000 Series

PDF	764 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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57 / 764 page

Rev. 2.00, 09/04, page 17 of 720

2.2.3

System Registers

System registers consist of four 32-bit registers: high and low multiply and accumulate registers

(MACH and MACL), the procedure register (PR), and the program counter (PC).

Multiply-and-Accumulate Registers (MAC): Registers to store the results of multiply-and-

accumulate operations.

Procedure Register (PR): Registers to store the return address from a subroutine procedure.

Program Counter (PC): Registers to indicate the sum of current instruction addresses and four,

that is, the address of the second instruction after the current instruction.

2.2.4

Initial Values of Registers

Table 2.1 lists the values of the registers after reset.

Table 2.1

Initial Values of Registers

Classification

Initial Value

R0 to R14

Undefined

General registers

R15 (SP)

Value of the stack pointer in the vector

address table

Bits I3 to I0 are 1111 (H'F), reserved bits

are 0, and other bits are undefined

GBR

Undefined

Control registers

VBR

H'00000000

MACH, MACL, PR

Undefined

System registers

Value of the program counter in the vector

address table

HD64F7047 Datasheet(PDF) 57 Page - Renesas Technology Corp