Texas Instruments TMS320C2XX User Manual

Page 237

LDP

Load Data Page Pointer

7-84

Cycles for a Single LDP Instruction (Using Direct and Indirect Addressing)

Program

Operand

ROM

DARAM

SARAM

External

DARAM

2+p

code

SARAM

2, 3

†

2+p

code

External

2+d

src

2+d

src

2+d

src

3+d

src

code

† If the operand and the code are in the same SARAM block

Cycles for a Repeat (RPT) Execution of an LDP Instruction (Using Direct and

Indirect Addressing)

Program

Operand

ROM

DARAM

SARAM

External

DARAM

2n+p

code

SARAM

2n, 2n+1

†

2n+p

code

External

2n+nd

src

2n+nd

src

2n+nd

src

2n+1+nd

src

code

† If the operand and the code are in the same SARAM block

Cycles for a Single LDP Instruction (Using Short Immediate Addressing)

ROM

DARAM

SARAM

External

2+p

code

Example 1

LDP

127

;(DP = 511: addresses FF80h–FFFFh)

Before Instruction

After Instruction

Data Memory

FFFFh

FEDCh

FFFFh FEDCh

1FFh

0DCh

Example 2

LDP

#0h

Before Instruction

After Instruction

1FFh

Example 3

LDP

*,AR5

Before Instruction

After Instruction

ARP

AR4

300h

AR4

300h

Data Memory

300h

06h

300h

06h

1FFh

06h

Cycles