TDA7546 datasheet(41/68 Pages) STMICROELECTRONICS

tên linh kiện	TDA7546

Giải thích chi tiết về linh kiện	Multichip module for TMC tuner applications

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TDA7546

Software specifications

41/68

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

---

111

MSB = 64768

111

MSB = 65024

111

MSB = 65280

111

MSB = 65536

Table 14.

Addr 2 PLL counter 2 (MSB) (continued)

MSB

LSB

Function

Table 15.

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

MSB

LSB

Function

0000

000

Tuning Voltage Offset = 0

0000

001

TVO = 25mV

0000

010

TVO = 50mV

------

1111

111

TVO = 3175mV

0-TVO

1+TVO

Table 16.

Addr 5 IF counter control 1

MSB

LSB

Function

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

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

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

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

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

tSample = 640μs (FM)4ms (AM )

tSample = 320μs (FM)2ms (AM)

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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