rtd cpuModules CMA34CR, Руководство пользователя

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14 CMA34CR cpuModule BDM-610000083 Rev L
Electrical Characteristics
The table below lists the Electrical Characteristics of the CMA34CR. Operating outside of these parameters may
cause permanent damage to the cpuModule.
Table 11 Electrical Characteristics
Symbol Parameter Test Condition Min. Max.
USB Ports
Ioc Overcurrent Limit Each port 0.5 A 5.0 A
SVGA Port
V
OH
Output Voltage High
HSYNC, VSYNC I
OH
= –8.0 mA 2.4 V 3.3 V
V
OL
Output Voltage Low
HSYNC, VSYNC I
OL
= 8.0 mA 0.0 V 0.5 V
V
OH
Output Voltage High
DDC_* I
OH
= –4.0 mA 2.4 V 3.3 V
V
OL
Output Voltage Low
DDC_* I
OL
= 8.0 mA 0.0 V 0.4 V
V
IH
Input Voltage High
DDC_* — 2.0 V 5.5 V
V
IL
Input Voltage Low
DDC_* — -0.3 V 0.8 V
I
DDCvcc
Supply Current for
DDC Electronics — 500 mA
DisplayPort
I
VCC
Supply Current — 500 mA
Serial Ports - RS-232
V
OH
Output Voltage High R
L
= 3 k 5.0 V 7.0 V
V
OL
Output Voltage Low R
L
= 3 k -7.0 V -5.0 V
V
IH
Input Voltage High — 2.0 V 15 V
V
IL
Input Voltage Low — -15 V 0.6 V
Serial Ports - RS-422/485
V
OD1
Differential Output R
L
= 100 Ohm 2.0 V
V
OD2
Differential Output R
L
= 54 Ohm 1.5 V
V
OC
Common Mode
Output R
L
= 54 or 100
Ohm
3.0 V
V
TH
Differential Input
Threshold -200 mV -50 mV
V
I
Absolute Max Input
Voltage -18 V 18 V
aDIO
V
OH
Output Voltage High I
OH
= –29 mA 2.4 V 3.3 V
V
OL
Output Voltage Low I
OL
= 17 mA 0.0 V 0.5 V
V
IH
Input Voltage High — 1.8 V 5.5 V
V
IL
Input Voltage Low — -0.3 V 0.8 V
I
ADIOvcc
Supply current — 500 mA