Lenovo PC 300PL Techical Information Manual - Page 39

Diskette drive connector, Power supply connector

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Appendix A. Connector pin assignments Figure 21 (Page 2 of 2). IDE connector pin assignments Pin Signal I/O Pin 9 Data bus bit 4 I/O 29 10 Data bus bit 11 I/O 30 11 Data bus bit 3 I/O 31 12 Data bus bit 12 I/O 32 13 Data bus bit 2 I/O 33 14 Data bus bit 13 I/O 34 15 Data bus bit 1 I/O 35 16 Data bus bit 14 I/O 36 17 Data bus bit 0 I/O 37 18 Data bus bit 15 I/O 38 19 Ground NA 39 20 Key (Reserved) NA 40 Diskette drive connector Figure 22. Diskette drive connector pin assignments Pin Signal I/O Pin 1 Drive 2 installed # I 2 3 Not connected NA 4 5 Ground NA 6 7 Ground NA 8 9 Reserved NA 10 11 Ground NA 12 13 Ground NA 14 15 Ground NA 16 17 MSEN1 I 18 19 Ground NA 20 21 Ground NA 22 23 Ground NA 24 25 Ground NA 26 27 MSEN0 I 28 29 Ground NA 30 31 Ground NA 32 33 Data rate 1 NA 34 Power supply connector Figure 23 (Page 1 of 2). Power supply connector pin assignments Pin Signal name Pin 1 +3.3 V 11 2 +3.3 V 12 Signal I/O NC NA Ground NA IRQ I CS16# I SA1 O PDIAG# I SA0 O SA2 O CS0# O CS1 O Active# I Ground NA Signal I/O High density select O Not connected NA Data rate 0 NA Index# I Motor enable 0# O Drive select 1# O Drive select 0# O Motor enable 1# O Direction in# O Step# O Write data# O Write enable# O Track0# I Write protect# I Read data# I Head 1 select# O Diskette change# I Signal name +3.3 V −12 V Appendix A. Connector pin assignments 31

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Appendix A.
Connector pin assignments
Diskette drive connector
Power supply connector
Figure 21 (Page 2 of 2). IDE connector pin assignments
Pin
Signal
I/O
Pin
Signal
I/O
9
Data bus bit 4
I/O
29
NC
NA
10
Data bus bit 11
I/O
30
Ground
NA
11
Data bus bit 3
I/O
31
IRQ
I
12
Data bus bit 12
I/O
32
CS16#
I
13
Data bus bit 2
I/O
33
SA1
O
14
Data bus bit 13
I/O
34
PDIAG#
I
15
Data bus bit 1
I/O
35
SA0
O
16
Data bus bit 14
I/O
36
SA2
O
17
Data bus bit 0
I/O
37
CS0#
O
18
Data bus bit 15
I/O
38
CS1
O
19
Ground
NA
39
Active#
I
20
Key (Reserved)
NA
40
Ground
NA
Figure 22. Diskette drive connector pin assignments
Pin
Signal
I/O
Pin
Signal
I/O
1
Drive 2 installed #
I
2
High density select
O
3
Not connected
NA
4
Not connected
NA
5
Ground
NA
6
Data rate 0
NA
7
Ground
NA
8
Index#
I
9
Reserved
NA
10
Motor enable 0#
O
11
Ground
NA
12
Drive select 1#
O
13
Ground
NA
14
Drive select 0#
O
15
Ground
NA
16
Motor enable 1#
O
17
MSEN1
I
18
Direction in#
O
19
Ground
NA
20
Step#
O
21
Ground
NA
22
Write data#
O
23
Ground
NA
24
Write enable#
O
25
Ground
NA
26
Track0#
I
27
MSEN0
I
28
Write protect#
I
29
Ground
NA
30
Read data#
I
31
Ground
NA
32
Head 1 select#
O
33
Data rate 1
NA
34
Diskette change#
I
Figure 23 (Page 1 of 2). Power supply connector pin assignments
Pin
Signal name
Pin
Signal name
1
+3.3 V
11
+3.3 V
2
+3.3 V
12
-
12 V
Appendix A.
Connector pin assignments
31