Philips TEA5880TS - Manual (Page 12)

9397 750 13022 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Preliminary data sheet Rev. 02 — 26 April 2004 12 of 27
Philips Semiconductors
TEA5880TS
Integrated FM stereo radio IC for host processor tuning
[1] The frequency is decreased when increasing the content of this register.
[1] The frequency is increased when increasing the content of this register.
[1] This register does not have an address. To read the status register, latch its content into the PISO (using
L_STS bit in control register B) then read out the PISO.
[1] This register does not have an address. To read the counter register, latch its content into the PISO (using
L_CNT bit in control register B) then read out the PISO.
Table 15: OSC_IF - (address 6h) bit description [1]
Bit Symbol Description
14 to 11 - address bits
10 to 0 IFO[10:0] 11-bit digital-to-analog converter for adjusting the IF frequency
Table 16: OSC_FM - (address 7h) bit description [1]
Bit Symbol Description
14 to 11 - address bits
10 to 0 FO[10:0] 11-bit digital-to-analog converter for adjusting the FM frequency in fine steps;
this register is used in combination with the CAP_FM register to set a FM
frequency
Table 17: STATUS - bit description [1]
Bit Symbol Description
15 to 9 FS[6:0] field strength, indicated by the amount of bits set:
0 bits set = < 10 dB
µ
V
1 bit set = 10 dB
µ
V to 20 dB
µ
V
2 bits set = 20 dB
µ
V to 30 dB
µ
V
3 bits set = 30 dB
µ
V to 40 dB
µ
V
4 bits set = 40 dB
µ
V to 50 dB
µ
V
5 bits set = 50 dB
µ
V to 60 dB
µ
V
6 bits set = 60 dB
µ
V to 70 dB
µ
V
7 bits set = > 70 dB
µ
V
8 - not applicable; always read as logic 1
7 to 5 R[2:0] chip revision; the revision for TEA5880TS is 100b
4 to 3 - not applicable; always read as logic 1
2 - reserved for production test
1 - not applicable; always read as logic 1
0 - reserved for production test
Table 18: COUNTER - bit description [1]
Bit Symbol Description
15 to 0 CNT[15:0] pulses counted during the period that the counter is enabled and the NR/W
line the 3 wire bus is low