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1997 Apr 08
6
Philips Semiconductors
Preliminary specification
Pre-amplifier for Hard Disk Drive (HDD)
with MR-read/inductive write heads
TDA5155
7
PINNING
SYMBOL PAD
V
CC(WD)
GND1
HUS
WDIx(v)
DESCRIPTION
1
2
3
4
supply voltage for the write drivers
ground connection 1
head unsafe output
write data input (differential, voltage
input)
write data input (differential, voltage
input)
write data input (differential, current
input)
write data input (differential, current
input)
read/write (read = active HIGH,
write = active LOW)
serial bus enable
serial bus data
serial bus clock
ground connection 2
read data output (differential x
y)
read data output (differential x
y)
ground connection 3
supply voltage
10 k
external resistor
ground connection 4
inductive write head connection for
head H0 (differential x
y)
inductive write head connection for
head H0 (differential x
y)
MR-read head connection for head
H0 (differential x
y)
ground connection for head H0
MR-read head connection for head
H0 (differential x
y)
inductive write head connection for
head H1 (differential x
y)
inductive write head connection for
head H1 (differential x
y)
MR-read head connection for head
H1 (differential x
y)
ground connection for head H1
MR-read head connection for head
H1 (differential x
y)
inductive write head connection for
head H2 (differential x
y)
WDIy(v)
5
WDIx(i)
6
WDIy(i)
7
R/W
8
SEN
SDATA
SCLK
GND2
RDx
RDy
GND3
V
CC
R
ext
GND4
0Wx
9
10
11
12
13
14
15
16
17
18
19
0Wy
20
0Rx
21
0GND
0Ry
22
23
1Wx
24
1Wy
25
1Rx
26
1GND
1Ry
27
28
2Wx
29
2Wy
30
inductive write head connection for
head H2 (differential x
y)
MR-read head connection for head
H2 (differential x
y)
ground connection for head H2
MR-read head connection for head
H2 (differential x
y)
inductive write head connection for
head H3 (differential x
y)
inductive write head connection for
head H3 (differential x
y)
MR-read head connection for head
H3 (differential x
y)
ground connection for head H3
MR-read head connection for head
H3 (differential x
y)
inductive write head connection for
head H4 (differential x
y)
inductive write head connection for
head H4 (differential x
y)
MR-read head connection for head
H4 (differential x
y)
ground connection for head H4
MR-read head connection for head
H4 (differential x
y)
inductive write head connection for
head H5 (differential x
y)
inductive write head connection for
head H5 (differential x
y)
MR-read head connection for head
H5 (differential x
y)
ground connection for head H5
MR-read head connection for head
H5 (differential x
y)
inductive write head connection for
head H6 (differential x
y)
inductive write head connection for
head H6 (differential x
y)
MR-read head connection for head
H6 (differential x
y)
ground connection for head H6
MR-read head connection for head
H6 (differential x
y)
inductive write head connection for
head H7 (differential x
y)
2Rx
31
2GND
2Ry
32
33
3Wx
34
3Wy
35
3Rx
36
3GND
3Ry
37
38
4Wx
39
4Wy
40
4Rx
41
4GND
4Ry
42
43
5Wx
44
5Wy
45
5Rx
46
5GND
5Ry
47
48
6Wx
49
6Wy
50
6Rx
51
6GND
6Ry
52
53
7Wx
54
SYMBOL PAD
DESCRIPTION