TAS5705
www.ti.com ...................................................................................................................................................................................................... SLOS549–JUNE 2008
AM MODE REGISTER (0x22)
See the PurePath Digital™ AM Interference Avoidance application note (SLEA040).
Table 26. AM Mode Register (0x22)
D20
0
D19
–
D18
–
D17
–
D16
–
FUNCTION
(1)
(1)
AM mode disabled
AM mode enabled
Select sequence 1
Select sequence 2
Select sequence 3
Select sequence 4
1
–
–
–
–
–
0
0
–
–
–
0
1
–
–
–
1
0
–
–
–
1
1
–
–
(1)
–
–
–
0
–
IF frequency = 455 kHz
–
–
–
1
–
IF frequency = 262.5 kHz
(1)
–
–
–
–
0
Use BCD tuned frequency
–
–
–
–
1
Use binary tuned frequency
(1) Default values are in bold.
Table 27. AM Tuned Frequency Register in BCD Mode
D15 D14 D13 D12 D11 D10
D9
–
D8
–
FUNCTION
0
–
0
0
–
0
0
–
0
X
–
0
–
X
0
–
X
0
BCD frequency (1000s kHz)
BCD frequency (100s kHz)
X
X
(1)
0
0
Default value
D7
X
D6
X
D5
X
D4
X
D3
–
D2
–
D1
–
D0
–
FUNCTION
BCD frequency (10s kHz)
BCD frequency (1s kHz)
–
–
–
–
X
X
X
X
(1)
0
0
0
0
0
0
0
0
Default value
(1) Default values are in bold.
OR
Table 28. AM Tuned Frequency Register in Binary Mode
D15 D14 D13 D12 D11 D10
D9
X
D8 FUNCTION
0
0
0
0
0
X
X
Binary frequency
(1)
0
0
0
0
0
0
0
0
Default value
D7
X
D6
X
D5
X
D4
X
D3
X
D2
X
D1
X
D0 FUNCTION
X
Binary frequency
(1)
0
0
0
0
0
0
0
0
Default value
(1) Default values are in bold.
Copyright © 2008, Texas Instruments Incorporated
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