L-USS820D-DB LSI, L-USS820D-DB Datasheet - Page 7

• Manufacturer Part Number: L-USS820D-DB
• Manufacturer: LSI

Specifications of L-USS820D-DB

• Operating Temperature (min): -20C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 85C
• Rad Hardened: No
• Lead Free Status / RoHS Status: Compliant

Data Sheet, Rev. 7
September 2004
Agere Systems Inc.
Pin Information
Table 2. Pin Descriptions
* Active-low signals within this document are indicated by an N following the symbol names.
† Pins marked as NC must have no external connections, except where noted.
8, 9, 10, 11,
14, 20, 21,
22, 23, 24,
34, 40
Pin
12
13
1
2
3
4
5
6
7
V
V
Symbol*
SS0
SS2,
XTAL1
XTAL2
DMNS
DPLS
A[4:0]
V
V
V
V
DDA
DDT
SST
SSX
, V
XTAL1
XTAL2
DMNS
V
DPLS
V
V
V
SS1
SSX
DDA
DDT
SST
A0
A1
A2
A3
,
Type
Figure 4. USS-820D Pin Diagram (44-Pin MQFP)
I/O
I/O
3
4
5
6
7
8
9
10
11
1
2
O
P
P
P
P
P
I
I
3.3 V Power Supply for Analog PLL.
Crystal/Clock Input. If the internal oscillator is used, this is the crystal
input. If an external oscillator is used, this is the clock input.
Crystal/Clock Output. If the internal oscillator is used, this is the crystal
output. If an external oscillator is used, this output should be left uncon-
nected.
3.3 V Power Supply for USB Transceiver.
USB Differential Data Bus Minus.
USB Differential Data Bus Plus.
Device Ground for USB Transceiver.
Address Bus. This is the address bus for the controller to access the
register set.
Device Ground. For compatibility with USS-820 revision B, this pin can be
connected to a controller address bit, as long as it is guaranteed to be
equal to 0 during register accesses and meets all address pin timing
requirements.
Device Ground.
Name/Description
32
31
30
29
28
27
26
25
24
23
33
RDN
WRN
IOCSN
NC
RESET
SOFN
IRQN
SUSPN
RWUPN
V
V
USB Device Controller
SSX
SSX
USS-820D
5-8117
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