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USS344S-DB Datenblatt(PDF) 7 Page - Agere Systems

Teilenummer USS344S-DB
Bauteilbeschribung  USS-344 QuadraBus Four-Host PCI-to-USB OpenHCL Host Controller
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Hersteller  AGERE [Agere Systems]
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USS344S-DB Datenblatt(HTML) 7 Page - Agere Systems

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Agere Systems Inc.
7
Advance Data Sheet, Rev. 9
June 2001
Four-Host PCI-to-USB OpenHCI Host Controller
USS-344 QuadraBus
Pin Information (continued)
Table 3. USB Port Signals (continued)
* An N following the symbol names indicates active-low for the USS-344.
Table 4. Legacy Support Signals
* An N following the symbol names indicates active-low for the USS-344.
Table 5. Chip Test Signals
* An N following the symbol names indicates active-low for the USS-344.
Pin
Symbol*
Type
Description
77
PWRFLT0N
Input
USB Port 0 Overcurrent (Active-Low).
79
PWRFLT1N
Input
USB Port 1 Overcurrent (Active-Low).
102
PWRFLT2N
Input
USB Port 2 Overcurrent (Active-Low).
104
PWRFLT3N
Input
USB Port 3 Overcurrent (Active-Low).
81
CLK48STOP
Bidir
USB Clock Stop (Optional). Used to stop external
48 MHz clock in PCI power management state D3.
87, 93, 99
VDDTPower
USB Transceiver VDD (3.3 V).
88, 94, 100
VSSTPower
USB Transceiver VSS.
86
RREF
Input
USB 2.0 1 k
Ω Precision Resistor Connection. Hi-Z if
implementation does not expect upgrade to USB 2.0.
85
VDDAPower
USB 2.0 Analog Power. Connect to VDD if implementa-
tion does not expect upgrade to USB 2.0.
82
VSSAPower
USB 2.0 Analog Power. Connect to VSS if implementa-
tion does not expect upgrade to USB 2.0.
84
XHI
Power
USB 2.0 Crystal Oscillator XHI Connection. Hi-Z if
implementation does not expect upgrade to USB 2.0.
83
XLO/CLK48
Power/Input
USB 2.0 Crystal Oscillator XHI Connection/USB 1.X
CLK 48 MHz Input.
Pin
Symbol*
Type
Description
68
KIRQ1I
Input
Legacy Keyboard Controller Interrupt (IRQ1 Input from
Keyboard Controller).
67
MIRQ12I
Input
Legacy Mouse Controller Interrupt (IRQ12 Input from
Mouse Controller).
69
A20I
Input
Legacy Gate A20 Input.
70
A20MN
Output/Open Drain Legacy Gate A20 Output (to Memory Controller).
71
IRQ1
Output/Open Drain System Keyboard Interrupt (Active-High).
72
IRQ12
Output/Open Drain System Mouse Interrupt (Active-High).
75
SMIN
Output/Open Drain System Management Interrupt (Active-Low).
Pin
Symbol*
Type
Description
61
TEST0
Input
Chip Test Signal. Refer to Test Mode Connection
Instructions section for usage information.
62
TEST1
Input
Chip Test Signal. Refer to Test Mode Connection
Instructions section for usage information.
63
TEST2
Input
Chip Test Signal. Refer to Test Mode Connection
Instructions section for usage information.
64
TEST3
Input
Chip Test Signal. Refer to section Test Mode Connection
Instructions for usage information.


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