tza1020a NXP Semiconductors, tza1020a Datasheet - Page 14
tza1020a
Manufacturer Part Number
tza1020a
Description
Pre-amplifiers For Cd-rw Systems
Manufacturer
NXP Semiconductors
Datasheet
1.TZA1020A.pdf
(36 pages)
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Philips Semiconductors
Table 21 Control bits for meassel
Table 22 Control bits for lpsel
Table 23 Control bit for cdrwsel
Table 24 Control bits for urefsel
Table 25 Read byte
Note
1. At power-on, an internal power-on reset signal is generated which resets the I
2000 Oct 30
Pre-amplifiers for CD-RW systems
When the internal data bits are found to be in a POR state (due to an actual power-on reset but also when set via
the I
to be set to logic 1 after power-up. Setting bit PORR forces the POR bit to logic 0 independent of other I
settings.
2
C-bus) bit POR signals logic 1. Using the POR bit to detect occurrence of a power-on reset requires bit PORR
meassel1
lpsel1
0
0
1
1
0
0
1
1
cdrwsel
urefsel
POR
0
1
0
1
0
1
meassel0
lpsel0
0
1
0
1
0
1
0
1
14
I
I
Gc [(Ic1 + Ic4)
2
2
C-bus bit state differs from power-on reset state
C-bus bit state equals power-on reset state; note 1
Gs (Ia1 + Ib1)
Gs (Ia1 + Ia2)
Gs (Ia1
MEAS1
REFERENCE OUTPUT VOLTAGE
(Ic2 + Ic3)] Gc [(Ic1 + Ic2)
Ia2)
2
C-bus data bits to a pre-defined state.
DESCRIPTION
DESCRIPTION
CD-RW mode
BANDWIDTH
CD-R mode
TZA1020; TZA1020A
160 kHz
320 kHz
40 kHz
80 kHz
2.9 V
3.5 V
Gs (Ib2
Gs (Ia2 + Ib2)
Gs (Ib2 + Ib1)
Product specification
MEAS2
(Ic3 + Ic4)]
Ib1)
2
C-bus bit
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