cx74063-26 Skyworks Solutions, Inc., cx74063-26 Datasheet - Page 33

• 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.

103052A
TXCP
TXD1
TXD2
PDETVCC
SOFTSEL
PREENA
NU
Symbol
TX charge pump bits [15:14]
TX divider D1 [17:16]
TX divider D2 [18]
Power detector bias [19]
Software band select [21:20]
Load default words [22]
Not used [23]
[781] 376-3000 I FAX [781] 376-3100 I [e-mail] I WWW.SKYWORKSINC.COM
Skyworks Solutions, Inc., Proprietary and Confidential
Function
Table 15. RX/TX Control Register (2 of 2)
Translational loop charge pump current setting:
Translational loop D1 divider setting:
Translational loop D2 divider setting:
Bit [19] sets bias voltage for the Schottky diode pair:
0 allows changing contents of R0 to R7
1 allows loading default words into R0 to R7
Upon power up, program RX/TX control register with PREENA
= 1 to load the default words into R0 to R5. If changing the
default words is required, program RX/TX control register
with PREENA = 0 and then program any or all of R0 to R5.
PREENA should also be set to 0 when sending SX R1, SX R2,
and RX/TX control register words before each time slot in
normal operation. The data is stored in R0 to R5 as long as
VDDBB (pin 43) is supplied with power.
Not used
Bit 15, Bit 14
Bit 17, Bit 16
Bit 21, Bit 20
0 sets D2 to 1
1 sets D2 to 2
0 = 0.5 V
1 = 1.0 V
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
sets TXCP to 0.5 mA
sets TXCP to 0.75 mA
sets TXCP to 1.0 mA
sets TXCP to 1.25 mA
sets D1 to 9
sets D1 to 11
sets D1 to 10
sets D1 to 12
not used
selects EGSM/GSM850, PCO = 0
selects DCS, PCO = 1
selects PCS, PCO = 1
State Description
Data Sheet I CX74063-26
MAY 16, 2003
33