Evaluation Kit Hardware
4.3.3.6
USB Ports
The Evaluation Kit features three USB communication ports:
Port A
Port B
Port C
Host High Speed (EHCI) and Full Speed (OHCI) multiplexed with USB
Device High speed Micro AB connector, J20
Host High Speed (EHCI) and Full Speed (OHCI) standard type A
connector, J19 upper port
Host Full speed OHCI only standard type A connector, J19 lower port
All three USB Host ports are equipped with 500 mA high-side power switch for self-powered and bus-
powered applications. The USB device port features VBUS insert detection function through the resistor
ladder R138 and R139.
Refer to the embedded MPU product datasheet for detailed programming information. For datasheet ref-
erence numbers and titles, see Section 1.2 ”Applicable Documents” .
Figure 4-23. USB Port (A)
3V3
USB A HOST/DEVICE INTERFACE
L14
R137
47k
5V_INTER
1
2
5V
8
MN15
OUTA
ENA
1
ACTIVE LOW
LCD_DETECT#
C107
100n
+ C106 220ohm at 100MHz
33u C108
7
IN
FLGA
2
1
L15
2
100n
6
5
GNG
OUTB
FLGB
ENB
3
4
OVCUR_USB
EN5V_HDA#
PB17
C109
100n
+ C110 220ohm at 100MHz
33u
AIC1526-0GS
3V3
R138
82k
(VBUS_SENSE)
R139
PB16
R140
J20
C111
15p
47k
47k
EARTH_USB
VBUS
DM
DP
ID
GND
1
2
3
4
5
(IDUSBA)
USBA_DM
USBA_DP
G3515-09010101-00
EARTH_USB
Figure 4-24. USB Port (B & C)
USB HOST B&C INTERFACE
USBB_DP
USBB_DM
L12
1
2
5V
8
MN14
OUTA
ENA
1
EN5V_HDB#
C102
100n
+ C103
33u
220ohm at 100MHz
L13
C101
100n
7
6
IN
GNG
FLGA
FLGB
2
3
OVCUR_USB
PB17
1
2
5
OUTB
ENB
4
EN5V_HDC#
J19
C105
100n
+ C104
33u
220ohm at 100MHz
AIC1526-0GS
Dual USB A
B
L21
A1
A2
A3
A4
A
1 2
3 4
B1
B2
B3
B4
USBC_DM
USBC_DP
220ohm at 100MHz
1 2
Evaluation Kit (EK) User Guide
EARTH_USB
EARTH_USB
4-29
11115A–ATARM–27-Jul-11
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