Philips TEA5880TS Manual page 11

Philips Semiconductors
9397 750 13022
Preliminary data sheet
Table 12: CTRL_B - (address 4h) bit description
Bit Symbol
14 to 11 -
10 L_CNT
9 L_STS
8 to 6 -
5 DEEMP
4 PISO_CLR
3 CNT_RST
2 CNT1_EN
1 -
0 MONO
Table 13: Description of output level control register bits
Value
0000b
0001b
0010b
0011b
0100b
0101b
0110b
Table 14: CAP_FM - (address 5h) bit description
Bit Symbol
14 to 11 -
10 -
9 to 8 -
7 to 0 FC[7:0]
[1] The frequency is decreased when increasing the content of this register (more capacitors).
Integrated FM stereo radio IC for host processor tuning
Description
address bits
latch counter: a transition from logic 1 to logic 0 will latch the
COUNTER register into the PISO (reading the PISO hereafter will read
the COUNTER register)
latch status: a transition from logic 1 to logic 0 will latch the STATUS
register into the PISO (reading the PISO hereafter will read the STATUS
register)
reserved for output level control; should be written with 4 (100b);
see Table 13
de-emphasis: logic 1 is 75 s (USA), logic 0 is 50 s (Europe, Japan)
a transition from logic 1 to logic 0 will clear the PISO; the PISO should
be clear before reading the STATUS/COUNTER register
a transition from logic 1 to logic 0 will clear both counter 1 and counter 2
counter 1 enabled (counting mode) when set to logic 1
should be written to logic 0
mono mode when set to logic 1, stereo mode when set to logic 0
Decimal
0
1
2
3
4
5
6
Description
address bits
reserved for capacitor extra current; this bit should be written to logic 1
by any access to the CAP_FM to ensure that the device functions
properly
reserved, should be written to logic 0
FM capacitor bank switches for adjusting the FM (RF) frequency in big
steps. Every bit, when set, will switch on a capacitor with a weight
according to its position i.e. bit 0 has weight 1, bit 1 has weight 2, bit 2
has weight 4 etc, bit 6 has weight 64, except for bit 7, which also has the
same weight as bit 6; there is thus only 7
that the value range 0 to 127 will switch on different capacitors the value
range 128 to 191 switches on the same capacitors as range 64 to 127,
the value range 192 to 255 will switch on different capacitors (an
overlapped range of 64 values caused when FC[7:6] = 01b or 10b)
Rev. 02 — 26 April 2004
TEA5880TS
Output level
12 mV
20 mV
35 mV
60 mV
100 mV
170 mV
200 mV
[1]
1
effective bits; this means
2
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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