CXA3031Q Datasheet, PDF (5/26 Pages) Sony Corporation – Read/Write Amplifier (with Built-in Filters) for FDDs

CXA3031Q
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
Description
21 HEAD 1B —
22 HEAD 1A —
23 HEAD 0B —
24 HEAD 0A —
24 23 22 21
Magnetic head input/output connections.
Connect the recording/playback magnetic
head to these pins, and connect the center
tap to VCC. When the logical voltage for
Pin 7 (XS1) is Low, the HEAD1 system is
active; when the logical voltage is High, the
HEAD0 system is active.
A.GND
25 WCLD
5V
when ^1.2V
XWG
= High
26 WCMD
3.8V
when
XWG
= Low
27 WCHD
28 IESET
5V
when ^1.2V
XEG
= High
3.8V
when
XEG
= Low
29 D.GND
—
30 ERA0
—
147
147
147
147
1M write current setting resistor connection.
Connect the write current setting resistor
VCC _{RWLD between this pin and VCC to set the}
write current.
25
26 ^{1.6M write current setting resistor connection.}
27 Connect the write current setting resistor
RWMD between this pin and VCC to set the
write current.
A.GND
2M write current setting resistor connection.
Connect the write current setting resistor
RWHD between this pin and VCC to set the
write current.
VCC
28 ^{Erase current setting resistor connection.}
Connect the erase current setting resistor RE
between this pin and VCC to set the erase
current.
A.GND
Digital system GND connection.
VCC
30
Erase current connection for the HEAD0
system.
31
31 ERA1
—
Erase current connection for the HEAD1
system.
A.GND
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