TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
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SLVS514G–APRIL 2004–REVISED OCTOBER 2006
APPLICATION INFORMATION (continued)
TUSB2040
Hub Controller
SN75240
BUSPWR
Tie to TPS2041B EN Input
Downstream
Ports
Upstream
Port
A
B
C
D
GANGED
DP1
DM1
D +
D −
DP0
DM0
D +
D −
Ferrite Beads
A
B
C
D
GND
5 V
†
GND
SN75240
DP2
DM2
TPS2041B
OC EN
IN OUT
1 µF
33 µF
5-V Power
Supply
DP3
DM3
5 V
D +
D −
A
B
C
D
Ferrite Beads
TPS76333
IN
SN75240
GND
DP4
DM4
0.1 µF
4.7 µF
V
CC
3.3 V
GND
5 V
†
4.7 µF
TPS2042B
PWRON1
GND
EN1
OC1
OUT1
OUT2
33 µF
OVRCUR1
PWRON2
OVRCUR2
48-MHz
Crystal
EN2
OC2
XTAL1
XTAL2
D +
D −
IN
0.1 µF
Ferrite Beads
Tuning
Circuit
GND
5 V
†
TPS2042B
EN1
PWRON3
OUT1
OCSOFF
GND
OC1 OUT2
EN2
OVRCUR3
33 µF
PWRON4
OC2
IN
OVRCUR4
D +
D −
0.1 µF
Ferrite Beads
GND
5 V
†
33 µF
†
USB rev 1.1 requires 120 µF per hub.
Figure 34. Hybrid Self / Bus-Powered Hub Implementation, TPS2042B/TPS2052B
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