Iei-integration ICE-DB-T6 Bedienungsanleitung PDF herunterladen (Seite 51)

Type 6 Carrier Board Design Guide

Page 41

adjacent to the USB Port connector pins. The OC# signal is asserted until the over-current

or over-temperature condition is resolved.

USB0+/- through USB4+/- from the COM Express Module are routed through a common

mode choke to reduce radiated cable emissions. The part shown is a AXIS POWER

BCCUB-T4P-2012-900T; this device has a common mode impedance of approximately 90

Ω at 100MHz. The common-mode choke should be placed close to the USB connector.

ESD protection diodes D10、D11 and D12 provide over-voltage protection caused by

ESD and electrical fast transients. Low capacitance diodes and transient voltage

suppression diodes should be placed near the USB connector. The example design uses

a RailClamp SRV05-4 low capacitance TVS Diode Array

from Semtech

(

http://www.semtech.com).

USB0+3

CN26

H4 H6

V1.01 Modify

+V5_US B3

U31

MI C2 026

ENA

FLGA

FLGB

ENB

OUTB

GND

OUTA

USB1- 3

USB1+ 3

HEAD ER _2X4_2.54

USB1

3 4

5 6

FB33

GCB1 608K-300

USB Port0~6

IO_GND

+V5_ USB3

L20

COMCHOKE_8_USB

USB3-_R

C182 0. 1U_4 _Y _16V

USB3+_R

+V5_USB 01

IO_GND

C181 0. 1U_4 _Y _16V

USB3+ 3

USB Power control

L19

COMCHOKE_8_USB

+V5_US B1

USB4-_R

USB4+_R

+V5_ USB4

USB3- 3U32

MI C2 026

ENA

FLGA

FLGB

ENB

OUTB

GND

OUTA

IO_GND

FB36

GCB1 608K-300

+V5_US B2

U33

MI C2 026

ENA

FLGA

FLGB

ENB

OUTB

GND

OUTA

FB37

GCB1 608K-300

C183 0. 1U_4 _Y _16V

+V5_USB 23

USB2+_R

USB2-_R USB3-_R

D11

PACDN 006

3 4

USB3+_R

IO_GND

FB6

GCB1 608K-300

IO_GND

C287

150U_TNC_SMD_6V3

USB for ESD Protect

C288

150U_TNC_SMD_6V3

IO_GND

USB1+_R

+V5_US B1

L17

COMCHOKE_8_USB

USB1-_R

LAN_U SB1B

LJ-G40BU1- 10

VCC1

D1-

D1+

GND1

VCC 2

D2-

D2+

GND 2

USB0-_R USB1-_R

D10

PACDN 006

3 4

USB1+_RUSB0+_R

+V5_US B4

+V5_USB0

USB0+_R

L16

COMCHOKE_8_USB

C286

150U_TNC_SMD_6V3

USB0-_R

IO_GND

+V5_ USB01

C184 0. 1U_4 _Y _16V

+V5_USB 23

R249

@0_4

+V5_US B5

USB5+ 3

USB5- 3

L21

COMCHOKE_8_USB

USB5-_R

USB5+_R

USB4+_R

USB4-_R USB5-_R

D12

PACDN 006

3 4

USB5+_R

IO_GND

+V5_DU AL

C185 0. 1U_4 _Y _16V

+V5_USB 45

C290

150U_TNC_SMD_6V3

USB4+3

+V5_ USB23

USB_4_5_OC#3

USB_2_3_OC#3

USB_0_1_OC#3

USB4-3

FB7

GCB1 608K-300

R375

0_4

C186 0. 1U_4 _Y _16V

+V5_USB 45

USB2-3

FB8

GCB1 608K-300

C291

150U_TNC_SMD_6V3

+V5_ USB5

IO_GND

USB2+_R

USB2-_R

L18

COMCHOKE_8_USB

+V5_US B0

+V5_ USB2

USB2+3

+V5_USB 01

+V5_ USB45

USB0-3

C289

150U_TNC_SMD_6V3

Figure 3-18: USB Reference Design

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 128 129

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