11
RS-232CRS-232CPCIUSB
PCI RS-232C USB
PCI USB
11.1 11.1.1
1 2 3 4
(5) CPUALU
CPU (5)(
RS-232-CRS-485IEEE488VXIUSB (5)(
ISAIBM PC/AT
(5)(
CPUCPUCPUCPUCPU (5)(
(5)(VL486PCI3PCI
11.1.2 /CRT
1234
79USB2.0480MB/sModemPC
8 :IEEE 13941.6GB/s 10RJ-45
5
AGP RS-232-CRS-485I2CIEEE1284 CD-ROMIDESCSI
USBIEEE1394 IEEE-488VXI
11.1.3
(bit) MHzISA8MHzPCI33.3MHz66.6MHz
MB/s =/8 11-1PCI33.3MHz32=32b/833.3 MHz =133.2MB/s
11.2 386ISA EISA486ISA VESAPentiumISA PCIPPISA PCIAGPPPCIAGPAGP111
11.2.1 PC/XTISA PC/XTPCIBM198116PC/XTPCPC/XT820
ISA ISA16886282016981624 ISA8MHz1611-1 16MB/s2416MB
ISA ISA1537DMA ISA
ISAISAISA987DMA
ISA
SA0 SA19 LA17 LA 23 (O) SA0 SA190 19LA17 LA2317 23I/OSA0 SA19LA17 LA2316MB AEN DMAI/OAENDMADMACPUAENI/O1.
BALE 8288BALESA0 SA19 SBHE I/OSBHESD8 SD15
2.SD0~SD7SD8~ SD15SD0SD15CPU
MEMR* (2)MEMW* SMEMR*SMEMW* (A0A191M (3)IOW* I/O (4)IOR* I/O (5)MEMCS16*I/OCS16* I/O 16 (6) OWS* 3.
I/O CHRDYI/O MASTER* IOCHCK*I/O RESET DRV CLK OSC REFRESH*I/O
IRQ3~ IRQ 7IRQ9~IRQ12IRQ14~IRQ15 I/OCPUIRQ9IRQ10~ IRQ 12IRQ14~ IRQ 15IRQ3~IRQ7 IRQ0~ IRQ 2IRQ8IRQ13IRQ
DMA DRQ0~ DRQ3DRQ5~ DRQ7 DACK0*~ DACK3* DAK5* ~ DAK7* DMADMA T/CDMA
412V512V105V55V104(GND )
ISA ISA I/O I/O DMA ISAI/OI/O
11.2.2 PCI PCI(Peripheral Component Interconnct Special Interest Group) PCISIGIntelIBMCompaqASTHPAppleDEC1001991
PCI
PCI
AD31~AD0
C/BE#3~BE#0
FRAME# TRDY# IRTY# STOP# DEVSEL# IDSEL REQ# GNT# PERR# SERR# CLK RST#64PAR64REQ64#ACK64#
INTA#INTB#INTC#INTD#TD1TD0TCKTMSTRST#AD63~AD32
C/BE#7~BE#4LOCK#JTAG PARPCI
PCI ISAPCI PCI 3264 64 5V3.3V
11.2.3 AGP AGP199683D3DPCIPCI AGPAGPAGP
AGP AGP
AGP AGP3D DIME(Direct Memory Excute) CPURAMAGPAGP RAM PCI
AGP AGP31243BIOS4
MHz MB/s 1 66 266 2 133 532 4 266 1064
AGPPCI
PCIAGP MB/S 133533MHZ 3366 3232 5 1 4965
11.3 RS-232C RS - 232CDTEDCEEIARS232CElectoronic Industrial Associate Recommended Standard 232C
11.3.1 RS-232C RS232C2522229COM1COM29
3 TxD DTEDCE 2 RxD DTEDCE 7 RTS DTEDCE 8 CTS DTEDCE 6 DSR DTEDCE 5 SG 1 DCD DTEDCE 4 DTR DTEDCE 9 RI DTEDCE
11.3.2 RS-232C RS-232C5V15V1MARK5V15V0SPACE2500pF25V3130
232CEIA3V15V03V15V112V15VTTL2V5V0V0.8V11.3.3 RS-232CTTL
MAX232
MAX2321. C1+C1-C2+C2-V+V-0.1f(105)2. RS-232CTTLR1INR2INT1OUTT2OUT-5V11TTL3.6V3. TTLRS-232CT1INT2INR1OUTR2OUT
11.3.4 RS-232C RS-232CRS-232CD
11.4 USB USBUniversal Serial BusCompaqDigital EquipmentIntelMicrosoftIBMNECNorthern Telecom7
19962USB 1.01.5Mbps12MbpsUSB 2.02000427CompaqHPIntelLucentMicrsoftNECPhilipsUSBUSB 2.0USB 1.0480MbpsUSB 2.0USBUSBPC
11.4.1 USB
USB 1.0 USB1.5MbpsUSBUSB12Mbps USBRS-232C9600bps1000USB 2.0480Mbps
USBUSB
USB4
USBUSB+5V/500mAUSBUSBUSBUSB, USBAPMAdvanced Power Management
USBHubUSB1275
11.4.2 USB
D+D- VD+ 2.7V, VD-0.8V, VD+ 2.0V, VD-2.0V, 4.75~5.25V500mA D+ D-USBD+3.0~3.6V,
USB USB USBHub USB 1 2 3 4
11.4.3 USB USB USB USB/ USB(USB Hub) USB USB USB USB
USB
11.4.4 USB USB USB4
1. : USBUSB 2. :USB
3. : 4. :
USB USBUSB4:
USBPollingUSBPolling1255msPolling10255msPolling1KHzPolling
1024B/ms
23SetupDataStatusSetupDataSetupStatus
11.4.5 USB USB USBTransactionPacketUSB
PID8PID4411-12 PID
USB 1. (1) (SOF) () (1ms)
(2) (IN)4: HubHub
(3) (OUT) : HubHub 3
(4)(SETUP) INOUT
2
3. SYNCPID8 4.
11.4.6 USB USBUSB2.0 USB480Mb/sUSBUSBUSBUSBUSBPS/2USBPCI USBSCSIPCUSBUSBPCUSBPC
USBUSBUSBUSBUSB,
1111.2 11.3 11.4 11.8 11.9 11.10