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RVCO_PCS
RX275_GSM
RVCO_DCS
RX275
TP861 TP860
SH1
GSM
2
5
942,5MHz
C
DCS/PCS
1897MHz
B
6
5
4
1
3
PCS
DCS
1960MHz
1842,8MHz
2
1
2
1
6
5
I
4
7
A
10
1
RX275_GSM_PCS
RX275_DCS
TX275
Note :
This drawing refers only to the first PCB-Version of the product !
RX275_DPCS
RVCO_275
RVCO_PCS
Alert Pad' s
M
N
TP500
D
TP864
A9
D9
PLL_EMIT
J9
LO2_CP
LO2_EMIT
PLL_BASE
H9
A7
PRE_IN
PLL_CP
J7
1
J6
CLK-OUT
MAGIC
6
A3
PRSC_IN
A1
CP_RX
26MHz
RX_VCO_IC
E2
E1
B1
CP_TX
5
3
SH2
4
5
6
1
4
TX_VCO_IC
SH3
14
8
3
5
4
PAC
6
1
2
4
7
7
1
8
J
K
L
TX275_GSM
TX275_DPCS
PA_B+
RVCO_DCS
V1_SW
SF_OUT
RF_V2
TX275_DPCS
H10
WHITE_CAP
FLASH
EPROM
SH9
GND
1
H
BATT_THERM_AD
2
1
CLK
2
RESET
BATT_SER_DATA
3
3
SIM_Vcc
BATT+
4
TX275_GSM
-10V
-5V
V1
TX_EN
SF_OUT
V1
WATCHDOG
SH18
SRAM
SRAM
K9
ALRTOUT
SIM_I/O
4
GCAP II
H6
SPKR-
E
H7
SPKR+
VPP
5
SIM CONN
F
K1
MIC_OUT
GND
6
B+
VSIM1
STBY_DL
V2
GSM RX ANTENNA SIGNAL
A
B
FILTERED GSM RX ANTENNA SIGNAL
C
UNFILTERED IF 400MHz
D
AMPLIFIED IF 400MHz
E
RX SPEAKER LINE -
F
RX SPEAKER LINE +
TX MIC LINE +
G
H
TX VCO SIGNAL
I
FILTERED PA OUTPUT SIGNAL
J
PA DETECT LINE
PA TUNING VOLTAGE
K
PA TUNING VOLTAGE
L
M
RX LOCAL OSC TUNING VOLTAGE
N
RX LOCAL OSC 800MHz
V3
J600
EXT CONN
1
GND
2
SW_RF
3
GND
4
BATT_FDBK
5
MAN_TEST
6
RS232_TX
7
RS232_RX
8
RS232_EN
9
ON/OFF
10
GND
11
UPLINK
12
DOWNLINK
13
DSC_EN
14
EXT_B+
15
GND
G
V_BOOST1
VREF
REVISIONS
GSM SERVICE SUPPORT GROUP
26.07.00
Level 3 Signal Flow
Rev. 1.0
GPRS LEAP
8485776k07_
P7_3
Michael Hansen, Ralf Lorenzen, Ray Collins
Page 2 of 2
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