2-28
Service Guide
Table 2-3
M1531 Signal Descriptions
Signal
Type
Description
Power Pins
VCC_A
P
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_B
P
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_C
P
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.
VDD_5
P
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.
VDD_5S
P
Vcc 5.0V Power for Group C. This pin supplies the 5V input tolerance circuit
and the core power for the internal suspend circuit.
Vss or Gnd
P
Ground
2.2.1.4 Numerical Pin List
Table 2-4
M1531 Numerical Pin List
No.
Name
Type
No.
Name
Type
No.
Name
Type
A1
--
-
C11
CBEJ3
I/O
F1
BRDYJ
O
A2
PHLDAJ
O
C12
AD28
I/O
F2
BOFFJ
O
A3
AD3
I/O
C13
REQJ1
I
F3
SMIACTJ
I
A4
AD6
I/O
C14
GNTJ0
O
F4
HLOCKJ
I
A5
AD8
I/O
C15
MPD4
I/O
F5
ADSJ
I
A6
AD12
I/O
C16
MD30
I/O
F6
VCC_B
P
A7
PAR
I/O
C17
MD25
I/O
F14
VCC_C
P
A8
TRDYJ
I/O
C18
MD58
I/O
F15
VCC_C
P
A9
AD17
I/O
C19
MD26
I/O
F16
MD50
I/O
A10
AD22
I/O
C20
MD59
I/O
F17
MD18
I/O
A11
AD25
I/O
D1
BEJ6
I
F18
MD51
I/O
A12
AD30
I/O
D2
BEJ5
I
F19
MD19
I/O
A13
REQJ3
I
D3
BEJ4
I
F20
MD52
I/O
A14
GNTJ2
O
D4
AD0
I/O
G1
HD63
I/O
A15
GNTJ3
O
D5
AD1
I/O
G2
CACHEJ
I
A16
MPD2
I/O
D6
AD9
I/O
G3
AHOLD
O
A17
MPD0
I/O
D7
AD14
I/O
G4
KENJ
O
A18
MD61
I/O
D8
LOCKJ
I/O
G5
NAJ
O
A19
MD29
I/O
D9
FRAMEJ
I/O
G6
VCC_A
P
A20
MD62
I/O
D10
AD19
I/O
G15
VCC_C
P
Summary of Contents for 390 Series
Page 15: ...System Introduction 1 3 Figure 1 2 PCB No 96183 1A Mainboard Layout Bottom ...
Page 96: ...2 50 Service Guide 2 3 3 Pin Configuration Figure 2 4 FDC37C67 TQFP Pin Diagram ...
Page 97: ...Major Chips Description 2 51 Figure 2 5 FDC37C67 QFP Pin Diagram ...
Page 102: ...2 56 Service Guide 2 3 6 Block Diagram Figure 2 6 FDC37C67 Block Diagram ...
Page 126: ...2 80 Service Guide 2 5 4 1 Functional Block Diagram Figure 2 10 M38813 Block Diagram ...
Page 128: ...2 82 Service Guide 2 6 2 Pin Diagram Figure 2 11 YMF715 Block Diagram ...
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