uss820d-db ETC-unknow, uss820d-db Datasheet - Page 10

• Manufacturer Part Number: uss820d-db
• Description: Uss-820d Device Controller
• Manufacturer: ETC-unknow

USB Device Controller
Register Timing Characteristics
Table 4. Register Access Timing—Special Function Register (SFR) Read
10
IOCSN
tRDRECRXD
RDN
tRDDV1,
tRDASU
tRDAHD
tRDREC
tRDDV2
Symbol
tRDPW
tRDDZ
A
D
HIGH IMPEDANCE
Read Address Setup Time (starts before the trailing edge of RDN
or IOCSN, whichever is first)
Read Address Hold (starts after the trailing edge of RDN or
IOCSN, whichever is first):
Read Data Valid (from the leading edge of RDN or IOCSN or from
address valid, whichever is last, to data valid):
Read Data to Z State (starts after the trailing edge of RDN or
IOCSN, whichever is first)
Recovery Time Between Reads (from the trailing edge of RDN or
IOCSN, whichever is first, to the next leading edge of RDN or
IOCSN, whichever is last)
Recovery Time Between Consecutive RXDAT Reads (from the
trailing edge of RDN or IOCSN, whichever is first, to the next
trailing edge of RDN or IOCSN, whichever is first)
Minimum Pulse Width (from the leading edge of RDN or IOCSN,
whichever is last, to the trailing edge of RDN or IOCSN, which-
ever is first)
Operational
Suspended
Operational
Suspended
tRDDV1
Figure 6. Register Access Timing—SFR Read
tRDPW
tRDASU
tRDDV2
VALID
(continued)
Parameter
VALID
tRDDZ
tRDREC
tRDAHD
tRDRECRXD
Min
−10
60
−1
23
86
23
—
—
2
VALID
Agere Systems Inc.
Max
74
33
32
—
—
—
—
—
—
VALID
June 2001
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
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