TZA1000 Просмотр технического описания (PDF) - Philips Electronics
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TZA1000 Datasheet PDF : 24 Pages
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Philips Semiconductors
QIC read-write amplifier
Preliminary specification
TZA1000
PINNING
SYMBOL PIN
DESCRIPTION
TYPE(1)
WX
1 write current to head
O
VSS1
WY
WD
2 large signal ground
P
3 write current to head
O
4 write data
I(2)
VDD1
5 large signal +5 V
P
INA
6 read signal from MR
I
INB
7 read signal from MR
I
ISENSE 8 sense current for MR
O
VDD3
SCLK
SDEN
9 +12 V for sense current P
supply
10 serial interface clock
I(2)
11 serial interface enable
I(2)
SDIO
12 serial interface data I/O I/O
HOLD
13 hold AGC; active LOW
I(2)
WGATE 14 write gate; active LOW
I(2)
CLK
15 clock input
I(2)
VSS2
16 small signal ground
P
VDD2
17 small signal +5 V
P
OUTB
18 output to equalizer
O
OUTA
19 output to equalizer
O
Vref
Iref
RESET
20 2 V reference output
21 current reference resistor
22 reset for microcontroller;
active LOW
O
note 3
O
BIASB
23 bias current for yoke heads O
BIASA
24 bias current for yoke heads O
Notes
1. Pin type abbreviations: O = output, I = input,
P = power supply.
2. Digital inputs: LOW: <0.3VDD ; HIGH: >0.7VDD.
3. Use only for connecting current reference resistor.
handbook, halfpage
WX 1
24 BIASA
VSS1 2
23 BIASB
WY 3
22 RESET
WD 4
VDD1 5
INA 6
INB 7
21 Iref
20 Vref
19 OUTA
TZA1000
18 OUTB
ISENSE 8
VDD3 9
SCLK 10
17 VDD2
16 VSS2
15 CLK
SDEN 11
14 WGATE
SDIO 12
13 HOLD
MGG659
Fig.2 Pin configuration.
See Chapter “Equivalent pin circuits” for the I/O
configuration of the analog pins.
1998 Mar 17
5
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