
6
Agere Systems Inc.
Advance Data Sheet, Rev. 9
June 2001
Four-Host PCI-to-USB OpenHCI Host Controller
USS-344
QuadraBus
Pin Information
(continued)
Table 2. PCI Signals
* An N following the symbol names indicates active-low for the USS-344.
Table 3. USB Port Signals
* An N following the symbol names indicates active-low for the USS-344.
Pin
111
113
116
115
Symbol
*
RSTN
CLK
REQN
GNTN
AD[31:0]
Type
Input
Input
Description
PCI Reset (Active-Low).
PCI System Clock (33 MHz).
PCI Request (Active-Low).
PCI Grant (Active-Low).
PCI Address and Data.
Output/3-State
Input
Bidir
120, 121, 122, 125, 126, 127, 128,
3, 6, 7, 10, 11, 12, 13, 16, 17, 32,
35, 36, 37, 38, 41, 42, 43, 47, 48,
49, 50, 53, 54, 55, 56
30
4, 18, 31, 44
19
22
23
25
5
24
26
29
105
108
109
110
119
1, 9, 15, 20, 28, 33, 39, 46, 52, 59,
65, 73, 80, 106, 112, 118, 124
2, 8, 14, 21, 27, 34, 40, 45, 51, 57,
60, 66, 74, 107, 114, 117, 123
58
PAR
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Input
Bidir
Bidir
PCI Parity.
PCI Bus Command and Byte Enables.
PCI Cycle Frame (Active-Low).
PCI Initiator Ready (Active-Low).
PCI Target Ready (Active-Low).
PCI Stop (Active-Low).
PCI Initialization Device Select.
PCI Device Select (Active-Low).
PCI Parity Error (Active-Low).
Output/Open Drain
PCI System Error (Active-Low).
Output/Open Drain
PCI Interrupt A (Active-Low).
Output/Open Drain
PCI Interrupt B (Active-Low).
Output/Open Drain
PCI Interrupt C (Active-Low).
Output/Open Drain
PCI Interrupt D (Active-Low).
Output/Open Drain
Power Management Event (Active-Low).
Power
3.3 V V
DD.
C/BEN[3:0]
FRAMEN
IRDYN
TRDYN
STOPN
IDSEL
DEVSELN
PERRN
SERRN
INTAN
INTBN
INTCN
INTDN
PMEN
V
DD
V
SS
Power
V
SS.
VIO
Power
PCI Environment Selection (3.3 V or 5 V).
Pin
89
90
91
92
95
96
97
98
76
78
101
103
Symbol
*
DPLS0
DMNS0
DPLS1
DMNS1
DPLS2
DMNS2
DPLS3
DMNS3
PRTPWR0
PRTPWR1
PRTPWR2
PRTPWR3
Type
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Bidir
Description
USB Port 0 DPLUS.
USB Port 0 DMINUS.
USB Port 1 DPLUS.
USB Port 1 DMINUS.
USB Port 2 DPLUS.
USB Port 2 DMINUS.
USB Port 3 DPLUS.
USB Port 3 DMINUS.
USB Port 0 Power Enable (Active-Low).
USB Port 1 Power Enable (Active-Low).
USB Port 2 Power Enable (Active-Low).
USB Port 3 Power Enable (Active-Low).