MSP 44x8G
PRELIMINARY DATA SHEET
3.3.2.5. Write Registers on I2C Subaddress 12hex
Table 3–11: Write Registers on I2C Subaddress 12hex
Register
Address
Function
Name
PREPROCESSING
00 0Ehex FM/AM Prescale
PRE_FM
bit[15:8] 00hex...
7Fhex
Defines the input prescale gain for the demodulated FM or
AM signal
00hex
off (RESET condition)
For all FM modes except satellite FM, the combinations of prescale value and
FM deviation listed below lead to internal full scale.
FM mode
bit[15:8] 7Fhex
48hex
28 kHz FM deviation
50 kHz FM deviation
75 kHz FM deviation
100 kHz FM deviation
150 kHz FM deviation
180 kHz FM deviation (limit)
30hex
24hex
18hex
13hex
FM high deviation mode (HDEV2, MSP Standard Code = Chex
)
bit[15:8] 30hex
14hex
150 kHz FM deviation
360 kHz FM deviation (limit)
FM very high deviation mode (HDEV3, MSP Standard Code = 6)
bit[15:8] 20hex
1Ahex
450 kHz FM deviation
540 kHz FM deviation (limit)
Satellite FM with adaptive deemphasis
bit[15:8] 10hex recommendation
AM mode (MSP Standard Code = 9)
bit[15:8] 7Chex recommendation for SIF input levels from
0.1 Vpp to 0.8 Vpp
(Due to the AGC switched on, the AM-output level remains
stable and independent of the actual SIF-level in the men-
tioned input range)
26
Micronas
MICRONAS [ MICRONAS ]
