Hardware Manual - RTD Embedded Technologies, Inc. Download

Transcript
Table 4
Symbol
Electrical Characteristics
Parameter
Test Condition
Min.
Max.
SVGA Port
VOH
Output Voltage High
HSYNC, VSYNC
IOH = –32.0 mA
3.8 V
5.0 V
VOL
Output Voltage Low
HSYNC, VSYNC
IOL = 32.0 mA
0.0 V
0.55 V
VOH
Output Voltage High
DDC_*
IOH = –4.0 mA
2.4 V
3.3 V
VOL
Output Voltage Low
DDC_*
IOL = 8.0 mA
0.0 V
0.4 V
VIH
Input Voltage High
DDC_*
—
2.0 V
5.5 V
VIL
Input Voltage Low
DDC_*
—
-0.3 V
0.8 V
IDDCvcc
Supply Current for
DDC Electronics
—
100 mA
Serial Ports - RS-232
VOH
Output Voltage High
RL = 3 k
5.0 V
10.0 V
VOL
Output Voltage Low
RL = 3 k
-10.0 V
-5.0 V
VIH
Input Voltage High
—
2.4 V
25 V
VIL
Input Voltage Low
—
-25 V
0.8 V
Serial Ports - RS-422/485
VOD1
Differential Output
RL = 50 Ohm
2.0 V
6.0 V
VOD2
Differential Output
RL = 27 Ohm
1.5 V
6.0 V
VOC
Common Mode
Output
RL = 27 or 50
Ohm
0.0 V
3.0 V
VTH
Differential Input
Threshold
-7V < VCM < 7V
-0.3 V
0.3 V
VI
Absolute Max Input
Voltage
—
-25 V
25 V
aDIO
VOH
Output Voltage High
IOH = –4.0 mA
2.4 V
3.3 V
VOL
Output Voltage Low
IOL = 8.0 mA
0.0 V
0.4 V
—
2.0 V
5.5 V
—
-0.5 V
0.8 V
2
VIH
Input Voltage High
VIL
Input Voltage Low
2
IADIOvcc
Supply current
—
500 mA
Utility Port Connector (CN5)
VRTC
Input RTC Voltage3
—
IUTILvcc
Utility Supply
Current
—
2.0V
3.6 V
500 mA
External Power Management (CN12) - PME#
VIH
Input Voltage High
—
2.0 V
5.5 V
VIL
Input Voltage Low
—
-0.5 V
0.8 V
1. Applies to modes up to UltraDMA Mode 4 (ATA/66)
12
CMA157886 cpuModule
BDM-610000063
Rev F