 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
82374EB датащи(PDF) 25 Page - Intel Corporation |
|
|
|||||||||||||||||||||||||||||
82374EB датащи(HTML) 25 Page - Intel Corporation |
|
|
25 / 208 page  82374EB82374SB 25 EISA Arbitration Signals Pin Name Type Description MREQ 30 in MASTER REQUEST MREQ 30 are slot specific signals used by EISA bus masters to request bus access MREQ once asserted must remain asserted until the corresponding MACK is asserted The MREQ is negated on the falling edge of BCLK slightly before the end of a master transfer The LA BE MIO and WR lines should be floated on or before the rising edge of BCLK after MREQ is negated The end of the last bus cycle is derived from CMD in this case The MREQ signals are asserted on the falling edge of BCLK MREQ is always sampled on the rising edge of BCLK MREQ is synchronous with respect to BCLK After asserting MREQ the corresponding master must not assert MREQ until 15 BCLKs after CMD is negated MREQ 74 in MASTER REQUESTPCI INTERRUPT REQUEST These pins behave in one of two modes depending on the state of the Mode Select Register bit 1 and bit 0 PIRQ 03 Master Request MREQ lines are slot specific signals used by EISA bus masters to request bus access This signal behave in the same manner as MREQ 30 signals PCI Interrupt Request PIRQ are used to generate asynchronous interrupts to the CPU via the Programmable Interrupt Controller (82C59) integrated in the ESC These signals are defined as level sensitive and are asserted low The PIRQx can be shared with PC compatible interrupts IRQ3IRQ7 IRQ9IRQ15 The PIRQx Route Control Register determines which PCI interrupt is shared with which PC compatible interrupt Register Pins Bit 10 MREQ7 MREQ6 MREQ5 MREQ4 PIRQ0 PIRQ1 PIRQ2 PIRQ3 00 PIRQ0 PIRQ1 PIRQ2 PIRQ3 01 PIRQ0 PIRQ1 MREQ5 MREQ4 10 PIRQ0 MREQ6 MREQ5 MREQ4 11 MREQ7 MREQ6 MREQ5 MREQ4 25 |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю 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 |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
