Zakładka z wyszukiwarką danych komponentów |
|
ISL3874IK96 Arkusz danych(PDF) 4 Page - Intersil Corporation |
|
ISL3874IK96 Arkusz danych(HTML) 4 Page - Intersil Corporation |
4 / 33 page 4 HBE0 H16 5V Tol, CMOS, BiDir PCI bus commands and byte enables. HBE0 applies to byte 0 (HAD7-HAD0). HINTA C6 CMOS, Output PCI Bus Interrupt A HRESET D6 5V Tol, CMOS, Input PCI reset. HFRAME B15 5V Tol, BiDir PCI cycle frame. FRAME is driven by the initiator of a bus cycle. FRAME is asserted to indicate that a bus transaction is beginning, and data transfers continue while this signal is asserted. When FRAME is deasserted, the PCI bus transaction is in the final data phase. HIRDY A15 5V Tol, CMOS, BiDir PCI initiator ready. HIRDY indicates the PCI bus initiators ability to complete the current data phase of the transaction. A data phase is completed on a rising edge of PCLK where both HIRDY and HTRDY are asserted. Until HIRDY and HTRDY are both sampled asserted, wait states are inserted. HTRDY A16 5V Tol, CMOS, BiDir PCI target ready. HTRDY indicates the primary bus targets ability to complete the current data phase of the transaction. A data phase is completed on a rising edge of PCLK when both HIRDY and HTRDY are asserted. Until both HIRDY and HTRDY are asserted, wait states are inserted. HREQ B7 CMOS, Output PCI bus request. HREQ is asserted by the ISL3874 to request access to the PCI bus as an initiator. HSERR B16 CMOS, Output PCI system error. HSERR is an output that is pulsed from the ISL3874 when enabled through the command register indicating a system error has occurred. The ISL3874 need not be the target of the PCI cycle to assert this signal. When HSERR is enabled in the control register, this signal also pulses, indicating that an address parity error has occurred on a CardBus interface. HSTOP C16 5V Tol, CMOS, BiDir PCI cycle stop signal. HSTOP is driven by a PCI target to request the initiator to stop the current PCI bus transaction. HSTOP is used for target disconnects and is commonly asserted by target devices that do not support burst data transfers. HDEVSEL D15 5V Tol, CMOS, BiDir PCI device select. The ISL3874 asserts HDEVSEL to claim a PCI cycle as the target device. As a PCI initiator on the bus, the ISL3874 monitors HDEVSEL until a target responds. If no target responds before timeout occurs, the ISL3874 terminates the cycle with an initiator abort. HPERR D16 5V Tol, CMOS, BiDir PCI bus parity. In all PCI bus read and write cycles, the ISL3874 calculates even parity across the HD31-HAD0 and BE3-BE0 buses. As an initiator during PCI cycles, the ISL3874 outputs this parity indicator with a one-PCLK delay. As a target during PCI cycles, the calculated parity is compared to the initiator parity indicator. A compare error results in the assertion of a parity error (PERR). HGNT C7 5V Tol, CMOS, ST Input PCI bus grant. HGNT is driven by the PCI bus arbiter to grant the ISL3874 access to the PCI bus after the current data transaction has completed. HGNT may or may not follow a PCI bus request, depending on the PCI bus parking algorithm. HPCLK A7 5V Tol, CMOS, Input HPCLK provides timing for all transactions on the PCI bus. All PCI signals are sampled at the rising edge of PCLK. HPAR B13 5V Tol, CMOS, BiDir PCI bus parity. HIDSEL C11 5V Tol, CMOS, Input Initialization device select. HIDSEL selects the ISL3874 during configuration space accesses. HIDSEL can be connected to one of the upper 24 PCI address lines on the PCI bus. HPME B8 CMOS, Output Power Management Event Output. HPME provides output for PME signals. TABLE 1. HOST INTERFACE PINS (Continued) PIN NAME PIN NUMBER PIN I/O TYPE DESCRIPTION ISL3874 |
Podobny numer części - ISL3874IK96 |
|
Podobny opis - ISL3874IK96 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |