Nokia 2270, 2272, 2275, 2285 Service Manual
CCS Technical Documentation
Schematics / Layouts
RH-3
Issue 1 06/2003
Nokia Corporation Confidential
Page A-11
RF-BB Interface
<-- RX_QN
<-- RX_QP
--> PA_DC/DC_M1
--> VREFRF01
--> RX_IF_AGC
--> TX_RF_AGC
--> RFBusEn1X
<-- PA_TEMP
<-- FALSE_DET
--> TX_IP
--> TX_IN
--> PA_DC/DC_M0
--> TX_QN
--> RFBusClk
<-> RFBusData
<-- DET_OUT
--> AFC_DAC
<-- RX_IN
<-- 19.2_MHZGND
--> TX_QP
--> TX_IF_AGC
--> PA_DC/DC_EP
<-- 19.2_MHZ_GPS
0
3
1
<-- RX_IP
--> TX_GATE
<-- 19.2_MHZ
--> PURX
J452
09
J438
0
1
0
25
12
3k3
R433
7
26
08
10n
C422
GND
1
GND
9
J441
5
3
J431
6
0
0
C428
10n
07
2
6
1
J437
5
7
13
J430
0
4
13
0
4
3
2
1
10
9
0
11
J450
J451
07
6
3k3
R427
J433
C426
10n
05
19
20
14
17
15
16
18
21
20
14
17
15
16
18
21
2
J435
J442
GND
J439
26
2
0
25
J434
11
0
3
2
1
08
12
J440
3
3k3
R435
06
J436
6
10
09
J432
2
RFCLK
RFCLK_I
GENIO(31:0)
RFAUXCONV(2:0)
GENIO_O(31:0)
RFCONV_O(9:0)
RFAUXCONV_O(2:0)
RFICCTRL(2:0)
RFCONV(9:0)
RFICCTRL_O(2:0)
RFAUX_O(1:0)
LPRFCLK
RFAUX(1:0)
RFCONV_ANA(16:0)
RFCONV_DIGI(16:0)
RFCLKGND
RFCLKGND_I
PUSL(3:0)
PUSL_O(3:0)
LPRFCLK_I
RFCONV_ANA_O(16:0)
RFCONV_DIGI_O(16:0)
RFCLK_GPS
SLOWAD(6:0)
SLOWAD_O(6:0)
RFCLK_I_GPS