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2. PIN ASSIGNMENT
Fig. 6 M5105 Pinout Diagram
Table 2 lists the functions of all M5105 pins. A low represents a logic
0 (0 V nominal) and a high represents a logic 1 (+2.4 V nominal).
0 (0 V nominal) and a high represents a logic 1 (+2.4 V nominal).
50
R11
49
R12
48
CTS2
47
DCD2
46
DSR2
45
VDDC
44
DTR2/CRB2
43
RTS2/CRB1
42
SIN2
41
SOUT2/BOUT2/CRB0
40
IRQ3
39
IRQ7
38
POE
37
SLIN
36
INIT
35
AFD
34
VD DD
33
STB
32
BUSY
31
ACK
8
0
F
G
ND2
5
0
7
9
F
G
ND5
0
0
7
8
RD
AT
A
77
VSSA
76
O
S
C
1
75
O
S
C
2
/C
L
K
7
4
V
DDB
7
3
DS
ACH
G
/R
G
72
IR
Q
6
71
T
C
70
D
A
K
69
D
R
Q
68
D
7
67
D
6
66
D
5
65
VSSC
64
D
4
63
62
61
60
59
58
57
56
55
54
53
52
51
C
T
S
1
DC
D1
S
O
UT
1
/BOUT
1
/CRB7
SI
N
1
RT
S
1
/CRB
4
DT
R1
/CRB
3
DS
R1
D3
D2
D1
D0
VSSD
IR
Q
4
1
MR
2
A9
3
A8
4
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
AE
N
13
IO
L
14
WR
15
RD
16
HCS0
/CRB
6
17
HCS1
/GW
R/
C
R
PE
18
G
P
E
N
/G
R
D
/X
TSE
L
19
PD
7
20
PD
6
21
PD
5
22
PD
4
23
PD
3
24
PD
2
25
PD
1
26
PD
0
27
V
SSE
28
ER
R
29
SL
C
T
30
PE
81
VDDA
82
FILTER
83
PUMP/PREN
84
DRVTYP
85
SETCUR
86
WGATE
87
STEP
88
RPM/LC
89
VSSF
90
WDA TA
91
DIR
92
DR1
93
DR0
94
MTR1
95
MTR0
96
HDSEL
97
TRK0
98
INDEX
99
WPROT
100
VSSB
M5105
– 4 –
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