cx74063-26 Skyworks Solutions, Inc., cx74063-26 Datasheet - Page 31

• Manufacturer Part Number: cx74063-26
• Description: Transceiver Multi-band Gprs, Edge Applications With Power Ramping Controller Integrated Crystal Oscillator With Output
• Manufacturer: Skyworks Solutions, Inc.

Serial Interface Programming
103052A
ADDR
EN
BUF_EN
SP
SC
RSVD
N
R
Symbol
SX1 Control
SX2 Fractional-N Modulo
RX/TX Control
R0 Auxiliary Control
R2 DC Offset Timing
R3 IP2 Calibration
R4 PAC Timing Control
R6 VCXO Control
R7 VCXO Control
Register
Address bits [1:0]. Must be set to
00b (see Table 12)
Enable mode [2]
Buffer enable [3]
Phase detector output polarity [4]
Charge pump output current [6:5]
Reserved
Main divider [19:9]
Reference divider [23:20]
[781] 376-3000 I FAX [781] 376-3100 I [e-mail] I WWW.SKYWORKSINC.COM
Table 13. SX1 Control Register (Synthesizer Control Functions)
Skyworks Solutions, Inc., Proprietary and Confidential
Function
Table 12. Control and Output States
B6
X
X
X
X
X
X
X
0
1
B5
X
X
X
X
X
0
0
1
1
0 enables synthesizer
1 disables synthesizer
0 sets buffer to off state
1 sets buffer to on state
0 sets phase detector output for negative VCO gain
1 sets phase detector output for positive VCO gain
Bit [6,5]:
0 0 sets charge pump current to 100 µA
0 1 sets charge pump current to 200 µA
1 0 sets charge pump current to 300 µA
1 1 sets charge pump current to 400 µA
Bit [8,7]: set bit 8 = 1, bit 7 = 0
Sets 11-bit main divider ratio range (64…2047)
Sets 4-bit reference divider ratio range (1…15)
B4
X
X
0
X
X
X
1
0
0
Address Bits
B3
X
X
X
0
1
1
1
1
1
State Description
B2
X
X
X
0
0
1
1
1
1
B1
0
1
1
0
0
0
0
0
0
Data Sheet I CX74063-26
B0
0
0
1
1
1
1
1
1
1
MAY 16, 2003
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