TDA7546 查看數據表（PDF） - STMicroelectronics

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TDA7546

Multichip module for TMC tuner applications

STMicroelectronics 

TDA7546

Software specifications

Table 14. Addr 2 PLL counter 2 (MSB) (continued)

MSB

LSB

d7 d6 d5 d4 d3 d2 d1 d0

-

-

-

-

-

-

-

--

1

1

1

1

1

1

0

0 MSB = 64768

1

1

1

1

1

1

0

1 MSB = 65024

1

1

1

1

1

1

1

0 MSB = 65280

1

1

1

1

1

1

1

1 MSB = 65536

Function

Swallow mode: fVCO/fSYN = LSB + MSB + 32

Table 15. Addr 3,4 TV1,2 (offset refered to tuning voltage PIN 28)

MSB

LSB

d7 d6 d5 d4 d3 d2 d1 d0

Function

0

0

0

0

0

0

0 Tuning Voltage Offset = 0

0

0

0

0

0

0

1 TVO = 25mV

0

0

0

0

0

1

0 TVO = 50mV

-

-

-

-

-

-

-

--

1

1

1

1

1

1

1 TVO = 3175mV

0

-TVO

1

+TVO

Table 16. Addr 5 IF counter control 1

MSB

d7 d6 d5 d4 d3 d2 d1

0

0

0

0

0

1

0

1

1

0

1

0

1

1

1

1

0

1

0

1

0

LSB

Function

d0

0 tSample = 20.48ms (FM)128ms (AM )

1 tSample = 10.24ms (FM)64ms (AM )

0 tSample = 5.12ms (FM)32ms (AM )

1 tSample = 2.56ms (FM)16ms (AM )

0 tSample = 1.28ms (FM)8ms (AM )

1 tSample = 640μs (FM)4ms (AM )

0 tSample = 320μs (FM)2ms (AM)

1 tSample = 160μs (FM)1ms (AM )

IF counter disable / stand by

IF counter enable

has to be set

Disable mute & AGC on hold

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