SKY73126-31 Datasheet, PDF (4/14 Pages) Skyworks Solutions Inc. – 161.92 MHz High Performance VCO/Synthesizer

DATA SHEET • SKY73126-31 VCO/SYNTHESIZER
Power-On
Reset
CLK
DATA
(Words 0-3, bits [31:0])
LE
Load
Register Bits [31:4]
Words 0-3
Bits [3:0]
4 LSB Decode
(Register Address,
Bits [3:0])
Vendor ID
Register
Latch
Word 0
Bits [31:4] Operation
Mode
Register
Latch
Word 1
Bits [31:4]
DPLL
Control
Register
Latch
Figure 4. Serial Bus Block Diagram
Word 2
Bits [31:4] Frequency
Control
Register
Latch
Word 3
Bits [31:4]
S1191
Table 3. SKY73126-31 Hold Registers and Addresses
Hold Register Name
Vendor ID
Operation Mode
DPLL Control
Frequency Control
Bit [3]
0
0
0
0
Hold Register Address (Binary) in Load Register Words
Bit [2]
Bit [1]
0
0
0
0
0
1
0
1
Bit [0]
0
1
0
1
Table 4. Word 0: Vendor ID Hold Register
Parameter
Function
wd_3, wd_2, wd_1,
wd_0
vendor id
Address bits [3:0]. Must be set to
0000b (see Table 3).
Vendor ID read-back [31:4]
State Description
Bits [31:4]:
Bit [31] Bits [30:4]
0
x
= vendor ID
1
x
= vendor ID initial read-back
Recommended
Operational Value
(Binary)
0000
Default Value
(Binary)
0000
Application
dependent
10000
Table 5. Word 1: Operation Mode Hold Register (1 of 2)
Parameter
Function
State Description
wd_3, wd_2, wd_1,
wd_0
cp_output
Address bits [3:0]. Must be set to
0001b (see Table 3).
Charge pump setting [6:4]
rsvd
Reserved [8:7]
Bits [6:4]:
0 0 0 = 800 μA
0 0 1 = 1600 μA
0 1 0 = 2400 μA
0 1 1 = 3200 μA
1 0 0 = 4000 μA
1 0 1 = 4800 μA
1 1 0 = 5600 μA
1 1 1 = 6400 μA
Reserved
Recommended
Operational Value
(Binary)
0001
Default Value
(Binary)
0001
Application
000
dependent
00
00
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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February 24, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201112C