the PCI Bus demystified phần 7 pps

... hierarchy. Host -PCI Bridge Memory CPU Host Bus PCI Device PCI- PCI Bridge 1 PCI- ISA Bridge PCI- PCI Bridge 2 PCI Device PCI Device PCI Bus 0 ISA Bus PCI Bus 1 PCI Bus 2 PCI Option Card Cache Legacy Device 1 37 Chances ... sees the transaction. Bridge 3 passes the transaction Figure 8-5: Bus number registers. Host Bridge 0 CPU Host Bus PCI Device 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

... 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 the active bus. Note that there is ... termination of the bus signals. CompactPCI 169 ■ Power up the slot ■ Deassert RST# and connect the slot to the bus, in either order. ■ Change the optional slo...

Ngày tải lên: 07/08/2014, 11:22

... AD[61] Gnd 70 +Vio (1) AD[60] PCI Bus Demystified PCI Connector (continued) 71 AD[59] AD[58] 72 AD[ 57] Gnd 73 Gnd AD[56] 74 AD[55] AD[54] 75 AD[53] +Vio (1) 76 Gnd AD[52] 77 AD[51] AD[50] 78 AD[49] ... Interface Bus (GPIB), 7 Hot Plug: defined, 166–1 67 insertion, 168–169 primitives, 170 73 removal, 169– 170 system components, 1 67 168 Hot Swap: basic, 176 – 177 CS...

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 ... phase, another higher priority master may request the bus causing the arbiter to remove GNT# from the agent in the process of stepping. Since the stepping age...

Ngày tải lên: 07/08/2014, 11:22

... ACK64#. PCI Bus Demystified 60 supply the interrupt vector. The C/BE# bus indicates which bytes of the interrupt vector are valid. Because PCI is processor independent, we don’t necessarily know the ... signaling keys. There are three pins on the con- nector labeled Vio. A universal board powers its PCI transceivers from the Vio pins. The motherboard connects the V...

Ngày tải lên: 07/08/2014, 11:22

... 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 functions allows us to locate PCI ... An extension of the Device ID (Subsystem ID) in the Configuration Header. EC EC Level. Identifies the Engineering Change Level of the board. 110 PCI Struct Len: The leng...

Ngày tải lên: 07/08/2014, 11:22

... over the P1 and P2 pins on the rear of the backplane, parallel to the backplane. The advantage to rear-mounted bridges, whether perpendicular or parallel is that they don’t use any slots. On the ... conformance with PCI specs. Connector The basic CompactPCI pin-and-socket connector is organized as 47 rows of 5 pins each (see Figure 9-3). The pins are on the backplane; th...

Ngày tải lên: 07/08/2014, 11:22

... Registers (BAR) 103 vi PCI Bus Demystified 13 Copies of the specifications may be ordered from: PCI Special Interest Group 2 575 N.E. Kathryn # 17 Hillsboro, OR 971 24 (800) 433-5 177 (503) 693-6232 (International) (503) ... 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 i...

Ngày tải lên: 07/08/2014, 11:22