AT43301_05 ATMEL [ATMEL Corporation], AT43301_05 Datasheet - Page 19

• Manufacturer Part Number: AT43301_05
• Description: Low-cost USB Hub Controller
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 4-8.
EOP Delay:
T
EOP Skew:
T
Low-speed timings are determined in the same way for:
T
1137J–USB–01/06
EOPD
HESK
LEOPD
DOWNSTREAM
UPSTREAM
= T
= T
and T
END OF
CABLE
EOP +
EOP
PORT
V
V
LHESK
- T
SS
SS
-T
Hub EOP Delay and EOP Skew
HDDX
EOP-
A. DOWNSTREAM EOP DELAY WITH CABLE
50% POINT OF
INITIAL SWING
T
EOP-
DOWNSTREAM
PORT OR END
C. UPSTREAM EOP DELAY WITH OR WITHOUT CABLE
UPSTREAM
OF CABLE
T
EOP+
PORT
V
V
SS
SS
CROSSOVER
EXTENDED
POINT
DOWNSTREAM
T
B. DOWNSTREAM EOP DELAY WITHOUT CABLE
EOP-
UPSTREAM
PORT
PORT
V
T
V
EOP+
SS
SS
CROSSOVER
EXTENDED
POINT
CROSSOVER
EXTENDED
POINT
T
EOP-
T
EOP+
CROSSOVER
EXTENDED
AT43301
POINT
CROSSOVER
EXTENDED
POINT
19