the PCI Bus demystified phần 4 docx

... a 64- bit memory address space. PCI Bus Demystified 63 64- bit Bus Figure 4- 4 shows a 64- bit transaction. A 64- bit master asserts REQ 64# at the same time as FRAME# in clock 2. In this case the selected ... optional signals; REQ 64# and ACK 64# . PCI Bus Demystified 60 supply the interrupt vector. The C/BE# bus indicates which bytes of the interrupt vector are...

Ngày tải lên: 07/08/2014, 11:22

... I/O. J4 and J5 can also be used for things like a second CompactPCI bus, STD 32 or VME. The Telephony specification makes use of J4 and J5 (see Figure 9 -4) . PCI Bus Demystified Figure 9 -4: Compact ... J1 holds the basic 32-bit PCI bus as well as the connector key. J2 supports the 64- bit extension as well as the system slot functions. Optionally, J2 can be used for app...

Ngày tải lên: 07/08/2014, 11:22

... monopolize the bus. This violates the low-latency spirit of the PCI spec. On the other hand, the specification does allow the notion of bus parking.” The arbiter may be designed to “park” the bus on ... While the choice of a default master is up to the system designer, the specification recommends parking on the last master that acquired the bus. PCI Bus...

Ngày tải lên: 07/08/2014, 11:22

... immediately issues a retry to the master and begins executing the transaction internally. This allows the bus to be used by other masters while the target is busy. PCI Bus Demystified 39 least significant ... one that asserted the interrupt signal. The mechanism for invoking multiple ISRs is called “chaining.” PCI Bus Demystified Table 4- 1 Interrupt PCI PCI PCI...

Ngày tải lên: 07/08/2014, 11:22

... Vendor ID: Identifies the vendor of the device. More specifically, it identifies the vendor of the PCI silicon. PCI Bus Demystified Figure 6-3: Type 0 configuration header. 91 PCI supports two signaling ... through to the PCI bus. PCI Bus Demystified Figure 6-1: x86 configuration address. Driving IDSEL A device is selected as the target of a configuration transa...

Ngày tải lên: 07/08/2014, 11:22

... Options Set PCI IRQ PCI Bus Demystified ENTRY: EAX Service identifier. 4- character string “ $PCI ( 049 435024h) EBX Function code in BL. 0 is the only function currently defined. Other bytes 0 EXIT: AL ... the number of the last PCI bus segment in the system. Segments are numbered sequentially from 0 to the value returned in CL. Find PCI Device/Class This pair of fun...

Ngày tải lên: 07/08/2014, 11:22

... 3 PCI- PCI Bridge 2 PCI- PCI Bridge 4 PCI- PCI Bridge 5 PCI Bus 2 PCI Bus 4 PCI Bus 5 Pri Bus Sec Bus Sub Bus Bridge 0 Bridge 1 Bridge 2 Bridge 3 Bridge 4 Bridge 5 0 1 0 3 3 0 1 2 3 4 5 5 2 2 5 4 5 127 PCI Bridging PCI- to -PCI ... bridge hierarchy. Host -PCI Bridge Memory CPU Host Bus PCI Device PCI- PCI Bridge 1 PCI- ISA Bridge PCI- PCI Bridge 2 P...

Ngày tải lên: 07/08/2014, 11:22

... the bus signals. CompactPCI 169 ■ Power up the slot ■ Deassert RST# and connect the slot to the bus, in either order. ■ Change the optional slot state indicator to show that the slot is on. 4. ... insertion event the system activates the software connection process for the inserted board. For an extraction event the system activates the PCI Bus Demystified 175...

Ngày tải lên: 07/08/2014, 11:22

... +3.3V 40 PERR# Reserved 41 +3.3V Reserved 42 SERR# Gnd 43 +3.3V PAR 44 C/BE[1] AD[15] 45 AD[ 14] +3.3V 46 Gnd AD[13] 47 AD[12] AD[11] 48 AD[10] Gnd PCI Connector Pin Side B (2) Side A 1 84 thus ... (1) AD[37] AD[36] 12 AD [42 ] AD [41 ] AD [40 ] Gnd AD[39] 11 AD [45 ] Gnd +Vio (1) AD [44 ] AD [43 ] 10 AD [49 ] AD [48 ] AD [47 ] Gnd AD [46 ] 9 AD[52] Gnd +Vio (1) AD[51] AD[50] 8...

Ngày tải lên: 07/08/2014, 11:22

... 1.0 ■ Small PCI Spec., Rev. 1.5a ■ PCI BIOS Spec., Rev. 2.1 PCI Bus Demystified 14 System CLK Provides timing for all PCI transactions and is an input to every PCI device. All other PCI signals ... detail. Figure 1-2: Functional diagram of the VL Bus. The VL Bus solved the bandwidth problem (in the short term anyway). On a 33 MHz, 32-bit processor bus, the VL B...

Ngày tải lên: 07/08/2014, 11:22