M1531 Numerical Pin List - Acer 390 Series Service Manual

Table 2-3 M1531 Signal Descriptions
Signal Type
Power Pins
VCC_A P
VCC_B P
VCC_C P
VDD_5 P
VDD_5S P
Vss or Gnd P
2.2.1.4 Numerical Pin List
Table 2-4

M1531 Numerical Pin List

No. Name
A1 --
A2 PHLDAJ
A3 AD3
A4 AD6
A5 AD8
A6 AD12
A7 PAR
A8 TRDYJ
A9 AD17
A10 AD22
A11 AD25
A12 AD30
A13 REQJ3
A14 GNTJ2
A15 GNTJ3
A16 MPD2
A17 MPD0
A18 MD61
A19 MD29
A20 MD62
2-28
Vcc 3.3V or 2.5V Power for Group A. This power is used for CPU interface
and L2 control signals. If this power connects to 3.3V, the relative signals will
output 3.3V and accept 3.3V input. If this power connects to 2.5V, the relative
signals will output 2.5V and accept 2.5V input.
Vcc 3.3V Power for Group B. This power is used for PCI interface and Tag
signals. It must connect to 3.3V. The relative signals will output 3.3V and 5V
input tolerance.
Vcc 3.3V Power for Group C. This power is used for DRAM interface signals
during normal operation and suspend refresh. It must connect to 3.3V. The
relative signals will output 3.3V and 5V input tolerance.
Vcc 5.0V Power for Group A and Group B. This pin supplies the 5V input
tolerance circuit and the core power for the internal circuit except the suspend
circuit.
Vcc 5.0V Power for Group C. This pin supplies the 5V input tolerance circuit
and the core power for the internal suspend circuit.
Ground
Type No.
- C11 CBEJ3
O C12 AD28
I/O C13 REQJ1
I/O C14 GNTJ0
I/O C15 MPD4
I/O C16 MD30
I/O C17 MD25
I/O C18 MD58
I/O C19 MD26
I/O C20 MD59
I/O D1 BEJ6
I/O D2 BEJ5
I D3 BEJ4
O D4 AD0
O D5 AD1
I/O D6 AD9
I/O D7 AD14
I/O D8 LOCKJ
I/O D9 FRAMEJ
I/O D10 AD19
Description
Name Type
I/O F1
I/O F2
I F3
O F4
I/O F5
I/O F6
I/O F14
I/O F15
I/O F16
I/O F17
I F18
I F19
I F20
I/O G1
I/O G2
I/O G3
I/O G4
I/O G5
I/O G6
I/O G15
No. Name
BRDYJ O
BOFFJ O
SMIACTJ I
HLOCKJ I
ADSJ I
VCC_B P
VCC_C P
VCC_C P
MD50 I/O
MD18 I/O
MD51 I/O
MD19 I/O
MD52 I/O
HD63 I/O
CACHEJ I
AHOLD O
KENJ O
NAJ O
VCC_A P
VCC_C P
Type
Service Guide