MiTAC 8355 service manual Charging

8355 N/B MAINTENANCE

Charging 1

PCI reset gate

Name	Pin	H8 Pin Definitions	During	After		ON		STANDBY		Function
			RESE	RESET/O
			T	FF
Port B TTL input voltage (input high min=2v, input low max=0.8v)
PB0	91	SB_PWRBTN#	T	O	L	LHL		O	Keep H	Power button trigger via8231 on /off
										Duplicate Power BTN#
										5→3V
PB1	90	H8_WAKE UP#	T	O	H	O		O	Keep H	Wake up SB at ACPI mode
										5→3V?
PB2	81	LEARNING	T	O				O	Keep H	Power button trigger via8231 on
										5→3V
PB3	80	CHARGING_RP	T	O		O		O	Keep	Battery charge control
PB4	69	VDD5 SW	T↓	O	LLH	O	H	O	Keep H	H8 vdd5 power source switch
PB5	68	H8_PWROK	T	O	L	O	LH	O	Keep H
PB6	58	RESERVE	T	O		O		O	Keep
PB7	57	RESERVE	T	O		O		O	Keep
Port 1 TTL input voltage (input high min=2v, input low max=0.8v)
P10/A0	79	KB OUT0	L	O	L	O	LH	O	Keep L	Key matrix scan output 0
P11/A1	78	KB OUT1	L	O	L	O	LH	O	Keep L	Key matrix scan output 1
P12/A2	77	KB OUT2	L	O	L	O	LH	O	Keep L	Key matrix scan output 2
P13/A3	76	KB OUT3	L	O	L	O	LH	O	Keep L	Key matrix scan output 3
P14/A4	75	KB OUT4	L	O	L	O	LH	O	Keep L	Key matrix scan output 4
P15/A5	74	KB OUT5	L	O	L	O	LH	O	Keep L	Key matrix scan output 5
P16/A6	73	KB OUT6	T	O	L	O	LH	O	Keep L	Key matrix scan output 6
P17/A7	72	KB OUT7	T	O	L	O	LH	O	Keep L	Key matrix scan output 7

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