SC2200 datasheet(310/433 Pages) NSC

310 / 433 page

www.national.com

310

Revision 3.0

Core Logic Module (Continued)

IRQ2 / IRQ10 Mask.

0: Not Masked.

1: Mask.

IRQ1 / IRQ9 Mask.

0: Not Masked.

1: Mask.

IRQ0 / IRQ8 Mask.

0: Not Masked.

1: Mask.

I/O Port 020h / 0A0h

Master / Slave PIC OCW2 (WO)

7:5

Rotate/EOI Codes.

000: Clear rotate in Auto EOI mode

100: Set rotate in Auto EOI mode

001: Non-specific EOI

101: Rotate on non-specific EOI command

010: No operation

110: Set priority command (bits [2:0] must be valid)

011: Specific EOI (bits [2:0] must be valid)

111: Rotate on specific EOI command

4:3

Reserved. Must be set to 0.

2:0

IRQ Number (000-111)

I/O Port 020h / 0A0h

Master / Slave PIC OCW3 (WO)

Reserved. Must be set to 0.

6:5

Special Mask Mode.

00:

No operation.

01:

No operation.

10:

Reset Special Mask Mode.

11:

Set Special Mask Mode.

Reserved. Must be set to 0.

Reserved. Must be set to 1.

Poll Command.

Disable.

Enable.

1:0

00:

No operation.

01:

No operation.

10:

Read interrupt request register on next read of Port 20h.

11:

Read interrupt service register on next read of Port 20h.

I/O Port 020h / 0A0h

Master / Slave PIC Interrupt Request and Service Registers

for OCW3Commands(RO)

The function of this register is set with bits [1:0] in a write to 020h.

Interrupt Request Register

IRQ7 / IRQ15 Pending.

0: Yes.

1: No.

IRQ6 / IRQ14 Pending.

0: Yes.

1: No.

IRQ5 / IRQ13 Pending.

0: Yes.

1: No.

Table 5-46. Programmable Interrupt Controller Registers (Continued)

Bit

Description

SC2200 Datasheet(PDF) 310 Page - National Semiconductor (TI)

SC2200 Datasheet(HTML) 310 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL