 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CS5535-UDC Datasheet(PDF) 103 Page - National Semiconductor (TI) |
|
|
||||||||||||||||||||||||||||||
CS5535-UDC Datasheet(HTML) 103 Page - National Semiconductor (TI) |
|
|
103 / 555 page  Revision 0.8 103 www.national.com 4.8 PROGRAMMABLE INTERRUPT CONTROL The Programmable Interrupt Control subsystem (PIC) is illustrated in Figure 4-18. The major modules are the Map- per and Masks (MM), Extended PIC (XPIC), and Legacy 8259A PIC (LPIC). Features • Two x86 compatible 8259As • 15-Level Priority Controller • Programmable Interrupt Modes • Individual Request Mask Capability • Individual Edge/Level Controls • Complete 8259A state read back via shadow registers • Mapper routes 62 inputs to 15 legacy interrupts and one Asynchronous System Management Interrupt (ASMI) • All 62 inputs individually maskable and status readable (MSRs 51400020h-51400027h or PIC I/O Offsets 00h- 1Ch, see Section 5.9.1 on page 333) 4.8.1 Mapper and Masks This block maps and masks up to 62 interrupt sources to 60 discrete Extended PIC (XPIC) inputs. The sources are organized into four groups: 1) 15 Primary pre-defined inputs (see Table 4-12) 2) 15 LPC inputs pre-defined (see Table 4-12) 3) 16 Unrestricted Y inputs (see Table 4-13) 4) 16 Unrestricted Z inputs (see Table 4-14) The outputs are organized into 16 groups of four signals each, except groups 0 and 2; they have two signals each. Each group is called an Interrupt Group (IG). Each pre- defined input is mapped to a specific IG. Each unrestricted input can be mapped to any IG except IG0. Regardless of mapping, any interrupt source can be masked to prevent participation in the interrupt process. Once the input to out- put map is established along with the mask values, signal flow from input to output is always completely combina- tional. Figure 4-18. PIC Subsystem Primary Input 0 Primary Input 1 Primary Input 3 Primary Input 4 Primary Input 15 LPC Input 0 LPC Input 1 LPC Input 3 LPC Input 4 LPC Input 15 Unrestricted Y Input 0 Unrestricted Y Input 1 Unrestricted Y Input 2 Unrestricted Y Input 3 Unrestricted Y Input 15 Unrestricted Z Input 0 Unrestricted Z Input 1 Unrestricted Z Input 2 Unrestricted Z Input 3 Unrestricted Z Input 15 Mapper and Masks (MM) IG0 (Note) IG1 IG2 (Note) IG3 IG4 IG5 IG6 IG7 IG8 IG9 IG10 IG11 IG12 IG13 IG14 IG15 IRQ0 IRQ1 (IRQ2) IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ8 IRQ9 IRQ10 IRQ11 IRQ12 IRQ13 IRQ14 IRQ15 Extended PIC (XPIC) Legacy 8259A PICs (LPIC) ASMI INTR : : : : Note: The outputs are organized into 16 groups of four signals each, except IG0 and IG2; they have two signals each. |
Similar Part No. - CS5535-UDC |
|
Similar Description - CS5535-UDC |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
