Chapter 3

 

 

 

Signals and Pinout Tables

Table 3-8. USB Signal Descriptions (Continued)

 

 

 

 

 

 

 

 

 

 

 

 

USB7-

USB Port 7, data - or D-

I/O

 

USB 2.0 compliant and

 

 

 

 

 

 

backwards compatible

 

 

 

 

 

 

to USB 1.1

 

 

USB_0_1_OC#

USB over-current sense,

I

PU 10k

 

 

 

 

USB ports 0 and 1. A pull-

3.3VSB

3.3VSB

 

 

 

 

up for this line shall be

 

 

 

 

 

 

present on the module. An

 

 

 

 

 

 

open drain driver from a

 

 

 

 

 

 

USB current monitor on

 

 

 

 

 

 

the carrier board may

 

 

 

 

 

 

drive this line low. Do not

 

 

 

 

 

 

pull this line high on the

 

 

 

 

 

 

carrier board.

 

 

 

 

 

USB_2_3_OC#

USB over-current sense,

I

PU 10k

 

 

 

 

USB ports 2 and 3. A pull-

3.3VSB

3.3VSB

 

 

 

 

up for this line shall be

 

 

 

 

 

 

present on the module. An

 

 

 

 

 

 

open drain driver from a

 

 

 

 

 

 

USB current monitor on

 

 

 

 

 

 

the carrier board may

 

 

 

 

 

 

drive this line low. Do not

 

 

 

 

 

 

pull this line high on the

 

 

 

 

 

 

carrier board.

 

 

 

 

 

USB_4_5_OC#

USB over-current sense,

I

PU 10k

 

 

 

 

USB ports 4 and 5. A pull-

3.3VSB

3.3VSB

 

 

 

 

up for this line shall be

 

 

 

 

 

 

present on the module. An

 

 

 

 

 

 

open drain driver from a

 

 

 

 

 

 

USB current monitor on

 

 

 

 

 

 

the carrier board may

 

 

 

 

 

 

drive this line low. Do not

 

 

 

 

 

 

pull this line high on the

 

 

 

 

 

 

carrier board.

 

 

 

 

 

USB_6_7_OC#

USB over-current sense,

I

PU 10k

 

 

 

 

USB ports 6 and 7. A pull-

3.3VSB

3.3VSB

 

 

 

 

up for this line shall be

 

 

 

 

 

 

present on the module. An

 

 

 

 

 

 

open drain driver from a

 

 

 

 

 

 

USB current monitor on

 

 

 

 

 

 

the carrier board may

 

 

 

 

 

 

drive this line low. Do not

 

 

 

 

 

 

pull this line high on the

 

 

 

 

 

 

carrier board.

 

 

 

 

 

 

 

 

 

 

 

Table 3-9. CRT Signal Descriptions

Signal

Description

I/O

PU/PD

Comment

VGA_RED

Red for monitor. Analog DAC output,

O

PD 150R

Analog output

 

designed to drive a 37.5-Ohm equivalent load.

Analog

 

 

 

 

 

 

 

 

 

 

 

VGA_GRN

Green for monitor. Analog DAC output,

O

PD 150R

Analog output

 

designed to drive a 37.5-Ohm equivalent load.

Analog

 

 

 

 

 

 

 

 

 

 

 

COM 830

Reference Manual

31

Page 37
Image 37
Ampro Corporation COM 830 manual USB7, Vgared, Vgagrn