the PCI Bus demystified phần 3 pptx

... 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 ... data PCI Bus Demystified Figure 3- 7: Target disconnect — with data. CLK FRAME# IRDY# TRDY# DEVSEL# STOP# Disconnect A Disconnect B 1 23 4 1 23 4 55 the ability to che...

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

... pins and not to the voltage that powers the board. The motherboard (including connectors) defines the signaling environment for the bus, whether it be 5V or 3. 3V. A 5V expansion board is designed ... its PCI transceivers from the Vio pins. The motherboard connects the Vio pins to the power rail corresponding to system’s signaling environment. Electrical and Mechanical I...

Ngày tải lên: 07/08/2014, 11:22

... one orientation, the key accommodates 5V cards. Rotated 180 degrees, it accommodates 3. 3V cards. PCI Bus Demystified Figure 5-10: 32 -bit PCI expansion card connector. 93 In the world of Plug ... 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...

Ngày tải lên: 07/08/2014, 11:22

... be about eight clocks at 33 MHz. PCI Bus Demystified 117 32 -bit and flat protected modes require a far call to an entry point obtained from the BIOS32 Service Directory. The PCI BIOS functions use ... bit 4 of the Status Register is 1, then the byte at offset 34 h in the header contains the offset to the first element of a linked list of capabilities. The Capabilit...

Ngày tải lên: 07/08/2014, 11:22

... sees the transaction. Bridge 3 passes the transaction Figure 8-5: Bus number registers. Host Bridge 0 CPU Host Bus PCI Device PCI- PCI Bridge 3 PCI- PCI Bridge 1 PCI Bus 0 PCI Bus 1 PCI Bus 3 PCI- PCI Bridge ... 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...

Ngày tải lên: 07/08/2014, 11:22

... loaded A3 B3 C3 E3 Slot 1 System Slot A3 B3 C3 E3 Slot 2 A3 B3 C3 E3 Slot 3 A3 B3 C3 E3 Slot 4 INTA# INTB# INTC# INTD# P1 pin A3 B3 C3 E3 Slot 8 148 CompactPCI is just an industrial version of the same PCI bus found ... 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 PCI connector a...

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[18] 32 AD[17] AD[16] 33 C/BE[2] +3. 3V 34 Gnd FRAME# 35 IRDY# Gnd 36 +3. 3V TRDY# 37 DEVSEL# Gnd 38 Gnd STOP# 39 LOCK# +3. 3V 40 PERR# Reserved 41 +3. 3V Reserved 42 SERR# Gnd 43 +3. 3V PAR 44 C/BE[1] ... +Vio (1) Bus Res C/BE[7] Gnd C/BE[6] 3 CLK4 (3) Gnd GNT3# (3) REQ4# (3) GNT4# (3) 2 CLK2 (3) CLK3 (3) SYSEN# GNT2# (3) REQ3# (3) 1 CLK1 (3) Gnd REQ1#...

Ngày tải lên: 07/08/2014, 11:22

... 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 Bus could achieve 132 Mbytes/sec. VESA also ... Group 2575 N.E. Kathryn #17 Hillsboro, OR 97124 (800) 433 -5177 (5 03) 6 93- 6 232 (International) (5 03) 6 93- 834 4 (FAX) www.pcisig.com All of the specifications are availabl...

Ngày tải lên: 07/08/2014, 11:22