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MiTAC 8355 service manual Ilimit

Models: 8355

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8355 N/B MAINTENANCE

Continued to the previous table

Port 5 TTL input voltage (input high min=2v, input low max=0.8v)

P50/TXD0

14

LED DATA

T

O

 

O

O

Keep

LED indicator shift data

 

 

 

 

 

 

 

 

 

 

P51/RXD0

13

H8 SMI#

T

O

 

O

O

Keep

External SMI# 5→3V

 

 

 

 

 

 

 

 

 

 

P52/SCK0

12

LED CLK

T

O

 

O

O

Keep

LED indicator shift clock

 

 

 

 

 

 

 

 

 

 

Port 6 Schmitt trigger input voltage (min=1.0v max=3.5v)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P60/KEYIN0/FTCI

26

KEY IN0

T↑

I

 

I

I

Keep

Key matrix input 0 need pull high

 

 

 

 

 

 

 

 

 

 

P61/KEYIN1/FTOA

27

KEY IN1

T↑

I

 

I

I

Keep

Key matrix input 1 need pull high

 

 

 

 

 

 

 

 

 

 

P62/KEYIN2/FTIA

28

KEY IN2

T↑

I

 

I

I

Keep

Key matrix input 2 need pull high

 

 

 

 

 

 

 

 

 

 

P63/KEYIN3/FTIB

29

KEY IN3

T↑

I

 

I

I

Keep

Key matrix input 3 need pull high

 

 

 

 

 

 

 

 

 

 

P64/KEYIN4/FTIC

32

KEY IN4

T↑

I

 

I

I

Keep

Key matrix input 4 need pull high

 

 

 

 

 

 

 

 

 

 

P65/KEYIN5/FTID

33

KEY IN5

T↑

I

 

I

I

Keep

Key matrix input 5 need pull high

 

 

 

 

 

 

 

 

 

 

P66/KEYIN6/IRQ6

34

KEY IN6

T↑

I

 

I

I

Keep

Key matrix input 6 need pull high

 

 

 

 

 

 

 

 

 

 

P67/KEYIN7/IRQ7

35

KEY IN7

T↑

I

 

I

I

Keep

Key matrix input 7 need pull high

 

 

 

 

 

 

 

 

 

 

Port 7 TTL input voltage (input high min=2v, input low max=0.8v)

P70/AN0

38

BAT VOLT1

T

I

 

I

I

T

Battery voltage measure

 

 

 

 

 

 

 

 

 

 

P71/AN1

39

I_LIMIT

T

I

 

I

I

T

 

 

 

 

 

 

 

 

 

 

 

P72/AN2

40

H8_I_DISCHG

T

I

 

I

I

T

Monitor system on/off state

 

 

 

 

 

 

 

 

 

 

P73/AN3

41

H8_I_CHG

T

I

 

I

I

T

 

 

 

 

 

 

 

 

 

 

 

P74/AN4

42

BAT TEMP1

T

I

 

I

I

T

Battery thermister temperature

 

 

 

 

 

 

 

 

 

 

P75/AN5

43

VCC CORE

T

I

 

I

I

T

 

 

 

 

 

 

 

 

 

 

 

P76/AN6/DA0

44

H8_I_CTR

T

O

 

O

O

T

Charging current adjust

 

 

 

 

 

 

 

 

 

 

P77/AN7/DA1

45

BL ADJ

T

O

 

O

O

T

Backlight inverter brightness adjust

 

 

 

 

 

 

 

 

 

 

Port 8 TTL input voltage (input high min=2v, input low max=0.8v)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P80/HA0

93

ISA SA2

T

I

 

I

I

Keep

 

 

 

 

 

 

 

 

 

 

 

P81/GA20

94

RESERVE

T

O

 

O

O

Keep

 

 

 

 

 

 

 

 

 

 

 

P82/CS1

95

H8 KBCS#

T

I

 

I

I

Keep

IO port 60/64 chip select

 

 

 

 

 

 

 

 

 

 

P83/IOR

96

ISA IOR#

T

I

 

I

I

Keep

ISA I/O read#

 

 

 

 

 

 

 

 

 

 

P84/IRQ2/TXD1

97

ISA IOW#

T

I

 

I

I

Keep

ISA I/O write

 

 

 

 

 

 

 

 

 

 

P85/IRQ4/RXD1

98

H8 MCCS#

T

I

 

I

I

Keep

IO port 62/66 chip select

 

 

 

 

 

 

 

 

 

 

P86/IRQ5/SCK1

99

BAT CLK

T↑

I/O

 

I/O

I/O

Keep

SM BUS clock need pull high

 

 

 

 

 

 

 

 

 

5→3V

 

 

 

 

 

 

 

 

 

 

61

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Page 62
Image 62
MiTAC 8355 service manual Ilimit
Page 61 Page 63