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TSA6060 View Datasheet(PDF) - Philips Electronics

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TSA6060 Datasheet PDF : 16 Pages
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Philips Semiconductors
Fast radio tuning PLL frequency
synthesizer
Product specification
TSA6060
The bit organization of the 4 data bytes is shown in Fig.3. Further information is given in Tables 2, 3, 4 and 5.
The bits S0 to S16 (DB0: D7 to D1; DB1: D7 to D0; DB2: D1 to D0) together with bit FM/AM (DB2: D5) are used to set
the divider of the input frequency at inputs AMI (pin 7) or FMI (pin 5). If the system is in-lock the following is valid, as
shown in Table 1.
Table 1 System-in-lock (note 1).
FM/AM
0
1
INPUT FREQUENCY (fi)
(S2 × 20 + S3 × 21 ..... + S15 × 213 + S16 × 214) × fref
(S0 × 20 + S1 × 21 ..... + S15 × 215+ S16 × 216) × fref
Note
1. The minimum dividing ratio for the AM mode is 26 = 64 and for the FM mode is 28 = 256.
INPUT
AM
FM
Table 2 Bit CP is used to control the charge pump
current (DB0: D0).
CP
CURRENT
0
LOW
1
HIGH
Table 5 Bit BS controls the open-collector band switch
output (DB2: D2).
BS
BAND SWITCH OUTPUT
1
sink current
0
floating
Table 3 Bits REF1 and REF2 are used to set the
reference frequency applied to the phase
detector (DB2: D7 to D6).
REF1
0
0
1
1
REF2
0
1
0
1
REFERENCE
FREQUENCY (kHZ)
1
10
25
50
Table 4 Bit FM/AM OPAMP controls the switch AM/FM,
FM/AM in the tuning voltage amplifier circuits
(DB2: D4).
FM/AM
OPERATIONAL
AMPLIFIER
1
0
SWITCH
FM/AM
closed
open
AM/FM
open
closed
The bit 8/4 MHz controls a divide-by-1/divide-by-2 divider
cell in the reference oscillator section. This allows the use
of a 4 MHz or 8 MHz crystal.
Table 6 Test mode.
T3
T2
T1
0
X
0
1
0
1
0
1
1
1
1
1
0
0
1
1
1
X
1
0
X
FUNCTION
normal
CP source
CP sink
CP 3-state
CP sink + source
BS = main divider output
BS = reference divider output
The data byte DB3 must be set to 0.....0. It is also used for
test purposes (see Fig.3)).
1995 Nov 23
5
 

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