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參數(shù)資料
| 型號： | USS344S-DB |
| 英文描述： | CONNECTOR, MCX, FEMALE, STRAIGHT, TH |
| 中文描述： | 號，344 QuadraBus四主機(jī)的PCI到USB主機(jī)控制器OpenHCL |
| 文件頁數(shù)： | 40/54頁 |
| 文件大?。?/td> | 850K |
| 代理商： | USS344S-DB |
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40
Agere Systems Inc.
Advance Data Sheet, Rev. 9
June 2001
Four-Host PCI-to-USB OpenHCI Host Controller
USS-344
QuadraBus
Legacy Configuration
Also included in the USS-344 is the legacy PS/2 mouse and keyboard interface as defined in the
OpenHCI Open
Host Controller Interface Specification for USB Release 1.0a.
This legacy interface along with standard USB BIOS
drivers allows USB mice and keyboards to operate in
MS-DOS
* mode. Legacy support need not be implemented
by the system designer if not desired. If not implemented, A20I, MIRQ12I, and KIRQ12I must be connected to a
stable logic level. Figure 6 shows the typical legacy support connection to the USS-344. Figure 7 shows the typical
connection of the unused legacy support signals when legacy support is not desired.
5-7829
Figure 6. Typical Legacy Support Connection
*
MS-DOS
is a registered trademark of Microsoft Corporation.
SMI
A20MN
USB
8259
INTERRUPT
CONTROLLER
5 Vdc-5 Vdc
SWITCHED
REGULATOR
P
CONNECTOR
USB
CONNECTOR
USB
CONNECTOR
USB
CONNECTOR
VBUS = 5 Vdc
CPU
5 Vdc
PRTPWR0
PWRFLT0N
DPLS0/DMNS0
5 Vdc-5 Vdc
SWITCHED
REGULATOR
VBUS = 5 Vdc
PRTPWR1
PWRFLT1N
DPLS1/DMNS1
5 Vdc-5 Vdc
SWITCHED
REGULATOR
VBUS = 5 Vdc
PRTPWR2
PWRFLT2N
DPLS2/DMNS2
5 Vdc-5 Vdc
SWITCHED
REGULATOR
VBUS = 5 Vdc
PRTPWR3
PWRFLT3N
DPLS3/DMNS3
AGERE USS-344
PCI-TO-USB
OHCI HOST
CONTROLLER
PCI VIO
PCI SIGNALS
32-bit, 33 MHz
OPTIONAL LEGACY SUPPORT
IRQ1
IRQ12
8042
LEGACY
DEVICE
CONTROLLER
PS/2 MOUSE
PS/2 KEYBOARD
KIRQ1I
MIRQ12I
A2OI
3.3 Vdc
PMEN
48 MHz
OSC
CLK48
CLK48STOP
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