Texas Instruments TMS320C2XX User Manual

Page 223

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IN

Input Data From Port

7-70

Cycles for a Single IN Instruction

Program

Operand

ROM

DARAM

SARAM

External

Destination: DARAM

2+io

src

2+io

src

2+io

src

3+io

src

+2p

code

Destination: SARAM

2+io

src

2+io

src

2+io

src

3+io

src

†

3+io

src

+2p

code

Destination: External

3+d

dst

+io

src

3+d

dst

+io

src

3+d

dst

+io

src

6+d

dst

+io

src

+2p

code

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

Cycles for a Repeat (RPT) Execution of an IN Instruction

Program

Operand

ROM

DARAM

SARAM

External

Destination: DARAM

2n+nio

src

2n+nio

src

2n+nio

src

2n+1+nio

src

+2p

code

Destination: SARAM

2n+nio

src

2n+nio

src

2n+nio

src

2n+2+nio

src

†

2n+1+nio

src

+2p

code

Destination: External

4n–1+nd

dst

+

nio

src

4n–1+nd

dst

+nio

src

4n–1+nd

dst

+nio

src

4n+2+nd

dst

+nio

src

+

2p

code

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

Example 1

IN

7,1000h

;Read in word from peripheral on

;port address 1000h. Store word in

;data memory location 307h (DP=6).

Example 2

IN

*,5h

;Read in word from peripheral on

;port address 5h. Store word in

;data memory location specified by

;current auxiliary register.

Cycles

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