RTC6701
DEC 2005
Preliminary
Data Sheet
Address 01: Synthesizer Register B
23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bits
9
8
7
6
5
4
3
2
1
0
Not used
SC
_trl
Name
Syn_RF_N_Reg
CP_RF
address
N12 N11 N10
PIN
N9 N8 N7 N6 N5 N4 N3 N2 N1 N0
Default
0
0
1
1
1
0
1
0
1
1
1
0
1
0
0
1
0
X
X
X
X
X
0
1
Syn_RF_N_Reg : N counter divider ratio control register [12:0] (default R ratio=400)
CP_RF [2:0] RF charge pump current control (from 50uA to 6mA, default=100uA)
SC_ctrl: external/internal SC_select control pin (LOW=internal). If set “1” in RTC67 series then charge pump will
enter the testing mode ----Only for internal testing
Address 10: Synthesizer Register C
23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bits
9
8
7
6
5
4
3
2
1
0
PA_Bias address
Name
PIN
Not Used Not Used Mout
PRE_control
Not used
8
7
6
5
4
3
2
1
0
1
0
0
2
1
1
0
0
1
1
1
0
0
Default
X
X
X
X
X
X
X
X
X
X
X
X
0
X
X
X
1
0
Mout
: Multi-function output select
(00,01,11,10)=(gnd, lock in detect ,RF divider output, reference clk output)
PRE_control[2:0]: prescalar current control (20~140uA)
PA_Bias[1:0]: PA bias resistor selection
Address 11: Synthesizer Register D
23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bits
9
8
7
6
5
4
3
2
1
0
Not
use ACP
d
PA_
PD
address
Name
Not Used
VCOSC
Audio_div
PIN
Default
1
1
0
0
7
0
6
5
0
4
3
1
2
0
1
0
0
0
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
1
VCOSC[1:0]: 2-bit RF VCO switch capacitor control in RTC6701
PA_PD 1: PA power down control, 0 for power on and 1 for power down
Audio_div[5:0]: Reference clock division ratio in audio carrier frequency synthesizer.
ACP[1:0]: Audio charge pump current control (default 00:20uA, 01:50uA, 10: 110uA, 11: 140uA)
www.richwave.com.tw
Specifications subject to change without notice
Rev V.004
Preliminary Confidential Proprietary
9
ETC [ ETC ]
