97CFDC Datasheet, PDF (19/20 Pages) SMSC Corporation – USB FLOPPY DISK CONTROLLER

APPENDIX A:
USB97CFDC TYPICAL APPLICATION
VCC
FVDD
C1
C2
.1uF
.1uF
C3
C4
RN1
.1uF
.1uF
VDD
1K x 5
FLOPPY
JP1
HDO
R4
1.5K
nDRVRDY
R1 10ohm
R2 10ohm
R3
10K
5%
1/10W
VCC
P1
1
2
3
VCC
D-
4 ^D+
GND
USB TYPE B
Note: If SD
pins not used,
tie to ground to
prevent pins
from floating
during
RN2
suspend
mode.
10K x 8
TP1
TP2
76
77
78
79
80
81
nDSKCHG
DRVDEN1
N.C.
GND
N.C.
82
83
84
GND
VDD
N.C.
85
86
87
88
89
90
91
92
SD7
SD6
SD5
SD4
GND
SD3
SD2
SD1
93
94
95
96
97
98
99
100
SD0
VDD
N.C.
N.C.
N.C.
nMEMR
nMEMW
SA12
SA11
USB97CFDC
VCC
+ C6
10uF
3.3V Regulator
VR1
3 _VIN
VOUT ²
VDD
+ C5
10uF
VCC
VDD
R7
nFDPWR
C10
C11
.1uF
.1uF
C12
C13
C14
.1uF
.1uF
.1uF
15K
R5
Q1
MOSFET P
FVDD
1µf
C8
180K
R6
U1
50
FA15
FA12
FA7
FA6
FA5
49
48
47
46
45
FA4
FA3
GND
44
43
42
FA2
FA1
FA0
VDD
FD0
FD1
FD2
FD3
41
40
39
38
37
36
35
34
FD4
FD5
FD6
FD7
nFCE
FA10
nFRD
GND
nFDPWR
33
32
31
30
29
28
27
26
nFDPWR
nDRVRDY
TP3
39pf
C7
Note: IF DRIVE
DOES NOT
SUPPLY
nDRVRDY OR
HDO SIGNAL,
THEY
SHOULD BE
TIED LOW AT
U1
HDO
Y1
14.318Mhz
15pf
C9
VDD
13
14
15
17
18
D0
D1
D2
D3
19
20
21
D4
D5
D6
D7
2
3
NC
30 ^NC
NC
A0
A1
A2
A3
12
11
10
9
8
A4
A5
A6
A7
A8
A9
A10
A11
7
6
5
27
26
23
25
4
A12
A13
A14
28
29
U2
CE
OE
WE
VPP
22
24
31
1
VDD
28F256
Title
USB97CFDC Typical Application
Size Document Number
Rev
B
G
Date:
Wednesday, December 13, 2000 Sheet
1
of 1
SMSC DS – USB97CFDC
Page 19
Rev. 12/15/2000