U4255BM-MFN Atmel, U4255BM-MFN Datasheet - Page 18

• Manufacturer Part Number: U4255BM-MFN
• Description: IC RCVR AM/FM FRONT-END 44-SSOP
• Manufacturer: Atmel

Specifications of U4255BM-MFN

• Frequency: 70MHz ~ 160MHz
• Modulation Or Protocol: AM, FM
• Applications: AM/FM Radio Receiver
• Current - Receiving: 50mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 7.5 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -

Data Transfer
Table 30. Control Registers
18
A24_100
A24_101
A24_111
A8_100
A8_101
M
M
M
M
M
S
B
S
B
S
B
S
B
S
B
1
1
1
1
1
ADDR.
ADDR.
ADDR.
ADDR.
ADDR.
0
0
1
0
0
0
1
1
0
1
U4255BM-M
AM/FM/WB
AM
Tes
Optimi
B9
B7
B3
B9
3
2
0
0
t
Demod-
B4
BYTE 3
BYTE 3
BYTE 3
BYTE 1
ze
BYTE 1
WB-
Gain
FM
MP
B9
B7
B2
B8
off
2
1
9
B3
Mut
B9
B7
B2
B7
1
0
8
e
Band width
B2
Start Smute
IF amplifier
Gain FM
B9
B6
B2
B6
0
9
7
B1
channel
sensor
Adj.
LS
B8
LS
B6
LS
B2
LS
B5
LS
B0
B
B
B
B
9
8
6
B
MSB
Sear
MSB
Smu
MSB
B88
B67
B25
used in test mode only
ch
te
FM IF
B8
B66
B24
7
Tk-
Width of window
B8
6
B6
B2
5
x
3
FM-AGC
B8
5
BYTE 2
B6
B2
BYTE 2
BYTE 2
4
x
2
B8
4
B6
B2
OSC divider/multipath
3
1
AM-AGC
B8
sensitivity
3
B6
B2
2
0
B8
2
B6
B1
FM BW 2
1
9
mixer
LS
B8
B
1
LS
B6
LS
B1
B
0
B
8
nd
MSB
Field
stren
B80
gth
MSB
MSB
B59
B17
center frequency of bandfilter
1
IF2 center frequency
BWM
B79
PX
B58
B16
0
B7
8
B5
B1
7
0
5
B7
B5
B1
BYTE 1
7
6
0
4
Time window stop signal
BYTE 1
BYTE 1
MP
FS
B7
B5
B1
6
5
0
3
bandwidth adj. channel
4519A–AUDR–03/02
FM
ext
B7
B5
B1
5
4
1
2
sensor
Adj.
B11
B7
De
B5
m.
4
3
0
use
Not
LS
B7
LS
B5
LS
B1
B
B
B
3
d
x
2
1
0