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