sky73112-11 Skyworks Solutions, Inc., sky73112-11 Datasheet - Page 5

• Manufacturer Part Number: sky73112-11
• Description: Sky73112-11 750-850 Mhz High Performance Vco/synthesizer With Integrated Switch
• Manufacturer: Skyworks Solutions, Inc.

Table 4. Load Register Word 0 (Programs the Operation Mode Register) (1 of 2)
wd_0, wd_1
cp_output
cp_delay
pd_polar
cp_tristate
rsvd
sd_sel
nr_sel
pll_en
ref_bw_sel
Parameter
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200736B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 30, 2009
Address bits [1:0]. Must be set to 00b (see
Table 3)
Charge pump setting [4:2]
Charge pump delay [6:5]
Polarity of phase detector [7]
Tri-state selection for the transmit PLL
charge pump output [8]
Reserved [9]
Internal operating voltage control bit for
synthesizer [10]
Note: this bit needs to be programmed
together with bits [11] and [12].
Internal operating voltage control bit for N-
counter and R1 divider [11]
See sd_sel parameter (bit [10])
Internal operating voltage control bit for PLL
[12]
See sd_sel parameter (bit [10])
Reference buffer bandwidth [14:13]
Function
Bits [4:2]:
0 0 0 = 200 A
0 0 1 = 400 A
0 1 0 = 600 A
0 1 1 = 800 A
1 0 0 = 1000 A
1 0 1 = 1200 A
1 1 0 = 1400 A
1 1 1 = 1600 A
Bits [6:5]:
0 0 = 2 nsec
0 1 = 4 nsec
1 0 = 7 nsec
1 1 = 9 nsec
NOTE: this device is fixed at 2 nsec.
Bit [7]:
0 = Negative
1 = Positive
NOTE: this device is fixed at negative polarity.
Bit [8]:
0 = Charge pump in normal functional mode
1 = Charge pump disabled/tri-stated
Reserved
Bit [12] Bit [11] Bit [10]: N-Cntr/R1-Divider ΣΔ Mod
This bit needs to be programmed together with bits [10] and [12].
This bit needs to be programmed together with bits [10] and [11].
Bits [14:13]:
0 0 = 20 MHz
0 1 = 30 MHz
1 0 = 40 MHz
1 1 = 50 MHz
0
1
1
1
1
X
0
0
1
1
X
0
1
0
1
State Description
=
=
=
=
=
Voltage
1.8 V
1.8 V
2.4 V
2.4 V
0 V
DATA SHEET • SKY73112-11 VCO/SYNTHESIZER
Voltage
1.8 V
2.4 V
1.8 V
2.4 V
0 V
Operational Value
Recommended
Application
dependent
(Binary)
100
00
00
11
–
–
0
0
0
5