STW81100AT-1 STMicroelectronics, STW81100AT-1 Datasheet - Page 19

• Manufacturer Part Number: STW81100AT-1
• Description: IC SYNTHESIZER MULTI RF 28VFQFPN
• Manufacturer: STMicroelectronics
• Type: Frequency Synthesizerr

Specifications of STW81100AT-1

• Pll: Yes
• Input: Clock, Crystal
• Output: Clock, Crystal
• Number Of Circuits: 1
• Ratio - Input:output: 3:2
• Differential - Input:output: No/No
• Frequency - Max: 4.4GHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-VFQFN, 28-VFQFPN
• Frequency-max: 4.4GHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 16.
Table 17. Functional_Mode
FUNCTIONAL_MODE register is used to select different functional mode for the STW81100 synthesizer
according to the following table:
Table 18.
Table 19. B_COUNTER
B[8:1] Counter value (bit B0 in the next register)
MSB
MSB
PD7
b7
b7
B8
Decimal value
HEX CODE
0
1
2
3
4
5
6
7
8
9
0x00
0x01
0x02
0x03
0x04
0x05
PD6
b6
b6
B7
Power down mode
Enable VCO A, output frequency divided by 2
Enable VCO B, output frequency divided by 2
Enable external VCO, output frequency divided by 2 (Test purpose only)
Enable VCO A, output frequency divided by 4
Enable VCO B, output frequency divided by 4
Enable external VCO, output frequency divided by 4 (Test purpose only)
Enable VCO A, direct output
Enable VCO B, direct output
Enable external VCO, direct output (Test purpose only)
PD5
B6
b5
b5
DEC CODE
PD4
0
1
2
3
4
5
B5
b4
b4
PD3
FUNCTIONAL_MODE
B_COUNTER
A_COUNTER
REF_DIVIDER
CALIBRATION
CONTROL
B4
b3
b3
Description
PD2
B3
b2
b2
DESCRIPTION
PD1
B2
b1
b1
STW81100
LSB
LSB
PD0
B1
b0
b0
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