cx74063-26 Skyworks Solutions, Inc., cx74063-26 Datasheet - Page 36

• 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.

Data Sheet I CX74063-26
36
MAY 16, 2003
ADDR
RSVD
PAC_TIME
RSVD
Symbol
ADDR
CAP_A
CAP_B
RSVD
Note:
Symbol
Address bits [5:0]. Must be set to
011101b (see Table 12)
Reserved [11:6]
PAC timing control [19:12]
Reserved [23:20]
Programmed values in this register are not maintained with VDDBB (pin 43).
Address bits [6:0]. Must be set to 0101101b (see Table 12)
Bit [11:7] capacitor A array control. Binary weighted.
Bit [11] = LSB = 1/8 pF
Bit [7] = MSB = 2 pF
Array composition = 2 pF, 1 pF, 0.5 pF, 0.25 pF, 0.125 pF
Bit [15:12] capacitor B array control. Binary weighted.
Bit [15] = LSB = 1/32 pF
Bit [12] = MSB = 1/4 pF
Array composition = 0.25 pF, 0.125 pF, 0.065 pF,
0.03125 pF
Bit [23:16] reserved
Function
[781] 376-3000 I FAX [781] 376-3100 I [e-mail] I WWW.SKYWORKSINC.COM
Skyworks Solutions, Inc., Proprietary and Confidential
Function Description
Table 19. R4 PAC Timing Control Register
Reserved. Must be set to default value.
Bit [19:12] sets timing for the PAC pedestal.
When all bits = 0, no pedestal.
Bit [12] = MSB = 1024/f
MHz
Bit [19] = LSB = 8/f
Reserved. Must be set to default value.
Table 20. R6 VCXO Control Register
State Description
PFD
= 0.615 µs for f
PFD
= 78.7 µs for f
Internal Power-
PFD
On Value
00000000
(Binary)
= 13 MHz
PFD
00001
0000
= 13
Determined during a one-
time factory calibration
Operational Value
Recommended
10011010 = 54.769 µs
Default (Binary)
00000000
(Binary)
000010
0100
103052A