IBM user manual 12 CMX58886CX cpuModule

Table 4 Electrical Characteristics

Symbol	Parameter	Test Condition	Min.	Max.
		SVGA Port
VOH	Output Voltage High	IOH = –32.0 mA	3.8 V	5.0 V
	HSYNC, VSYNC
VOL	Output Voltage Low	IOL = 32.0 mA	0.0 V	0.55 V
	HSYNC, VSYNC
VOH	Output Voltage High	IOH = –4.0 mA	2.4 V	3.3 V
	DDC_*
VOL	Output Voltage Low	IOL = 8.0 mA	0.0 V	0.4 V
	DDC_*
VIH	Input Voltage High	—	2.0 V	5.5 V
	DDC_*
VIL	Input Voltage Low	—	-0.3 V	0.8 V
	DDC_*
IDDCvcc	Supply Current for	—	0	2 A
	DDC Electronics
	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	RL = 27 or 50	0.0 V	3.0 V
	Output	Ohm
VTH	Differential Input	-7V < VCM < 7V	-0.3 V	0.3 V
	Threshold
VI	Absolute Max Input	—	-25 V	25 V
	Voltage
	multiPort - all modes
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
V	Input Voltage High2	—	2.0 V	5.5 V
IH
V	Input Voltage Low2	—	-0.5 V	0.8 V
IL
	RTC Battery Voltage
VRTC	Input RTC Voltage3	—	2.0V	3.6 V
	External Power Management (CN12) - PME#
VIH	Input Voltage High	—	2.0 V	3.3 V
VIL	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.

12 CMX58886CX cpuModule BDM-610000050 Rev A