CS5535 datasheet(344/555 Pages) NSC

344 / 555 page

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344

Revision 0.8

PIC Register Descriptions (Continued)

5.9.2.9

Interrupt Request Register (PIC_IRR)

This register is accessible only after the appropriate command is written to OCW3.

5.9.2.10

In-Service Register (PIC_ISR)

This register is accessible only after the appropriate command is written to OCW3.

1:0

REG_READ

00: No operation.

10: Read interrupt request register on next read of I/O Port 020h (master) or 0A0h

(slave).

01: No operation.

11: Read interrupt service register on next read of I/O Port 020h (master) or 0A0h

(slave).

I/O Port

Master: 020h

Slave:

0A0h

Type

Reset Value

00h

PIC_IRR Register Map

IRQ7_15STS

IRQ6_14STS

IRQ5_13STS

IRQ4_12STS

IRQ3_11STS

IRQ2_10STS

IRQ1_9STS

IRQ0_8STS

PIC_IRR Bit Descriptions

Bit

Name

Description

IRQ7_15STS

IRQ7 / IRQ15 Status (Pending). 0: Yes; 1: No.

IRQ6_14STS

IRQ6 / IRQ14 Status (Pending). 0: Yes; 1: No.

IRQ5_13STS

IRQ5 / IRQ13 Status (Pending). 0: Yes; 1: No.

IRQ4_12STS

IRQ4 / IRQ12 Status (Pending). 0: Yes; 1: No.

IRQ3_11STS

IRQ3 / IRQ11 Status (Pending). 0: Yes; 1: No.

IRQ2_10STS

IRQ2 / IRQ10 Status (Pending). 0: Yes; 1: No.

IRQ1_9STS

IRQ1 / IRQ9 Status (Pending). 0: Yes; 1: No.

IRQ0_8STS

IRQ0 / IRQ8 Status (Pending). 0: Yes; 1: No.

I/O Port

Master: 020h

Slave:

0A0h

Type

Reset Value

00h

PIC_ISR Register Map

IRQ7_15IS

IRQ6_14IS

IRQ5_13IS

IRQ4_12IS

IRQ3_11IS

IRQ2_10IS

IRQ1_9IS

IRQ0_8IS

PIC_OCW3 Bit Descriptions (Continued)

Bit

Name

Description

CS5535 数据表(PDF) 344 Page - National Semiconductor (TI)

CS5535 数据表(HTML) 344 Page - National Semiconductor (TI)

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