LMX3162VBH National Semiconductor, LMX3162VBH Datasheet - Page 13

• Manufacturer Part Number: LMX3162VBH
• Description: IC TXRX RADIO SNG CHIP 48-LQFP
• Manufacturer: National Semiconductor
• Type: Transceiverr

Specifications of LMX3162VBH

• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Drivers/receivers: -
• Protocol: -
• Other names: *LMX3162VBH

Swallow Counter Divide Ratio (A-Counter)
Note: Divide ratio must be from 0 to 63, and B must be
Programmable Counter Divide Ratio (B-Counter)
Programmable Reference Divider (R-Counter)
If the control bits are “10”, data is transferred from the 20-bit shift register into a latch, which sets the 5-bit R-counter. The serial
data format is shown below.
Note: X = Don’t Care Condition
Reference Counter Divide Ratio (R-Counter)
Pulse Swallow Function
f
B:
A:
f
R:
P:
Receiver Functional Description
The simplified block diagram below shows the mixer, IF amplifier, limiter, and discriminator. In addition, the DC compensation cir-
cuit, doubler, and voltage regulator for an external LNA stage are shown.
vco
OSC
MSB
19
X
:
: Output frequency of the external reference frequency oscillator
Output frequency of external voltage controlled oscillator (VCO)
Preset divide ratio of binary 7-bit programmable counter (3 to 127)
Preset divide ratio of binary 6-bit swallow counter (0
Preset divide ratio of binary 5-bit programmable reference counter (3 to 31)
Preset modulus of dual modulus prescaler (32 or 64)
18
X
17
X
Note: Divide ratio must be from 3 to 127, and B must be
16
X
Divide Ratio, B
15
Note: Divide ratio must be from 3 to 31.
X
127
3
4
*
RESERVED
Divide Ratio, R
14
X
31
3
4
*
13
A.
X
N13
0
0
*
1
REGISTER’S BIT MAPPING
12
X
R5
N12
0
0
*
1
0
0
1
*
11
X
A
13
R4
N11
10
0
0
1
*
X
P, A
0
0
*
1
A.
X
9
B)
(Continued)
R3
N10
0
1
1
*
0
0
1
*
X
8
R2
1
0
*
1
N9
X
7
0
1
*
1
R5
6
R1
R-COUNTER’s Divide
N8
1
0
1
*
1
0
1
*
R4
5
N7
Ratio
1
0
1
*
R3
4
R2
3
R1
2
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C2
1
1
LSB
C1
0
0