
AMD Geode™ SC2200 Processor Data Book
421
Electrical Specifications
32580B
t
USB_DJU22
Source differential driver jitter for paired
transactions
–150
150
ns
9-38
Function (downstream),
Note 4
t
USB_SE2
Source EOP width
1.25
1.5
μ
s
9-39
Note 4, Note 5
t
USB_DE2
Differential to EOP transition skew
–40
100
ns
9-39
Note 5
t
USB_RJD21
Receiver data jitter tolerance for con-
secutive transactions
–152
152
ns
9-40
Host (upstream),
Note 4
t
USB_RJD22
Receiver data jitter tolerance for paired
transactions
–200
200
ns
9-40
Host (upstream),
Note 4
t
USB_RJU21
Receiver data jitter tolerance for con-
secutive transactions
–75
75
ns
9-40
Function (downstream),
Note 4
t
USB_RJU22
Receiver data jitter tolerance for paired
transactions
–45
45
ns
9-40
Function (downstream),
Note 4
Low Speed Receiver EOP Width (Note 5)
t
USB_RE21
Must reject as EOP
330
ns
9-38
t
USB_RE22
Must accept as EOP
675
ns
9-38
Note 1. Unless otherwise specified, all timings use a 50 pF capacitive load (C
L
) to ground.
Note 2. Full-speed timing has a 1.5 K
Ω
pull-up to 2.8 V on the DPOS_Port1,2,3 lines.
Note 3. Timing difference between the differential data signals (DPOS_PORT1,2,3 and DNEG_PORT1,2,3).
Note 4. Measured at the crossover point of differential data signals (DPOS_PORT1,2,3 and DNEG_PORT1,2,3).
Note 5. EOP is the End of Packet where DPOS_PORT
t
= DNEG_PORT = SE0. SE0 occurs when output level voltage
≤
V
SE
(Min).
Note 6. C
L
= 350 pF.
Table 9-29. USB Timing Parameters (Continued)
Symbol
Parameter
Min
Max
Unit
Figure
Comments
Содержание Geode SC2200
Страница 8: ...8 AMD Geode SC2200 Processor Data Book List of Figures 32580B...
Страница 16: ...16 AMD Geode SC2200 Processor Data Book Overview 32580B...
Страница 70: ...74 AMD Geode SC2200 Processor Data Book Signal Definitions 32580B...
Страница 350: ...366 AMD Geode SC2200 Processor Data Book Debugging and Monitoring 32580B...
Страница 422: ...440 AMD Geode SC2200 Processor Data Book Electrical Specifications 32580B...
Страница 426: ...446 AMD Geode SC2200 Processor Data Book Package Specifications 32580B Figure 10 3 BGU481 Package Bottom View...