Table 4 electrical characteristics – IBM CMX58886CX User Manual
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CMX58886CX cpuModule
BDM-610000050
Rev A
SVGA Port
V
OH
Output Voltage High
HSYNC, VSYNC
I
OH
= –32.0 mA
3.8 V
5.0 V
V
OL
Output Voltage Low
HSYNC, VSYNC
I
OL
= 32.0 mA
0.0 V
0.55 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
—
0
2 A
Serial Ports - RS-232
V
OH
Output Voltage High
R
L
= 3 k
5.0 V
10.0 V
V
OL
Output Voltage Low
R
L
= 3 k
-10.0 V
-5.0 V
V
IH
Input Voltage High
—
2.4 V
25 V
V
IL
Input Voltage Low
—
-25 V
0.8 V
Serial Ports - RS-422/485
V
OD1
Differential Output
R
L
= 50 Ohm
2.0 V
6.0 V
V
OD2
Differential Output
R
L
= 27 Ohm
1.5 V
6.0 V
V
OC
Common Mode
Output
R
L
= 27 or 50
Ohm
0.0 V
3.0 V
V
TH
Differential Input
Threshold
-7V < V
CM
< 7V
-0.3 V
0.3 V
V
I
Absolute Max Input
Voltage
—
-25 V
25 V
multiPort - all modes
V
OH
Output Voltage High
I
OH
= –4.0 mA
2.4 V
3.3 V
V
OL
Output Voltage Low
I
OL
= 8.0 mA
0.0 V
0.4 V
V
IH
Input Voltage High
2
—
2.0 V
5.5 V
V
IL
Input Voltage Low
2
—
-0.5 V
0.8 V
RTC Battery Voltage
V
RTC
Input RTC Voltage
3
—
2.0V
3.6 V
External Power Management (CN12) - PME#
V
IH
Input Voltage High
—
2.0 V
3.3 V
V
IL
Input Voltage Low
—
-0.5 V
0.8 V
1. Applies to modes up to UltraDMA Mode 4 (ATA/66)
2. Maximum DC undershoot below ground must be limited to either 0.5V or 10mA. During
transitions, the device pins may undershoot to -2.0V or overshoot to 7.0V, provided it is less
than 10ns, with the forcing current limited to 200 mA.
3. Only required to maintain date and time when power is completely removed from the system.
Not required for board operation.
Table 4
Electrical Characteristics
Symbol
Parameter
Test Condition
Min.
Max.