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TSA6057T View Datasheet(PDF) - Philips Electronics

Part Name
Description
Manufacturer
TSA6057T
Philips
Philips Electronics Philips
TSA6057T Datasheet PDF : 20 Pages
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Philips Semiconductors
Radio tuning PLL frequency synthesizers
Product specification
TSA6057; TSA6057T
Table 1 The bits S0 to S16 (DB0: D1 to D7; DB1: D0 to D7 and DB2: D0 and D1) together with bit FM/AM (DB2: D5)
are used to set the divisor of the input frequency at inputs AMI (pin 7) or FMI (pin 5). If the system is in lock the
following is valid:
FM/AM
0
1
INPUT FREQUENCY (fi)
(S0 × 20 + S1 × 21 + S13 × 213 + S14 × 214) × fref
(S0 × 20 + S1 × 21 + S15 × 215 + S16 × 216) × fref
INPUT
AMl(1)
FMI(2)
Notes
1. The minimum dividing ratio for AM mode is 26 = 64.
2. The minimum dividing ratio for FM mode is 28 = 256.
Table 2 The bit CP is used to control the charge pump
current (DB0: D0)
CP
CURRENT
0
low
1
high
Table 3 The bits REF1 and REF2 are used to set the
reference frequency applied to the phase
detector (DB2: D7 and D6)
REF1
0
0
1
1
REF2
0
1
0
1
FREQUENCY
(kHz)
1
10
25
none
Table 4 The bit FM/AM OPAMP controls the switch
AM/FM; FM/AM in the tuning voltage amplifier
output circuitry (DB2: D4)
FM/AM OPAMP SWITCH FM/AM SWITCH AM/FM
1
closed
open
0
open
closed
Table 5 The bit BS controls the open collector
band switch output (DB2: D2)
BS
BAND SWITCH OUTPUT
1
sink current
0
floating
Remark: data byte DB3 must be set to 0000 0000. It is also
used for test purposes.
1997 Oct 29
6
 

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