Datasheet

DP1
DM1
DP2
DM2
DP3
DM3
DP4
PWRON1
OVRCUR1
PWRON2
OVRCUR2
DM4
DP0
DM0
V
CC
XTAL1
XTAL2
OCSOFF
SN75240
D +
D −
5 V
GND
D +
D −
5 V
D +
D −
5 V
D +
D −
5 V
48-MHz
Crystal
Downstream
Ports
TUSB2040
Hub Controller
Tuning
Circuit
A
B
C
D
33 µF
†
SN75240
A
B
C
D
GND
GND
GND
33 µF
†
33 µF
†
33 µF
†
D +
D −
Upstream
Port
TPS2041B
SN75240
A
B
5 V
GND
C
D
1 µF
IN
GND
Ferrite Beads
Ferrite Beads
Ferrite Beads
Ferrite Beads
BUSPWR
GANGED
Tie to TPS2041B EN
Input
OC EN
OUT
5-V Power
Supply
IN
GND
3.3 V
4.7 µF
0.1 µF
4.7 µF
EN1
IN
OC1
OUT1
TPS2042B
EN2
OC2
OUT2
0.1 µF
GND
†
USB rev 1.1 requires 120 µF per hub.
TPS76333
PWRON3
PWRON4
OVRCUR3
OVRCUR4
EN1
IN
OC1
OUT1
TPS2042B
EN2
OC2
OUT2
0.1 µF
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
SLVS514L –JUNE 2010–REVISED JUNE 2011 www.ti.com
Figure 37. Hybrid Self / Bus-Powered Hub Implementation, TPS2042B/TPS2052B
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