Motorola DCS StarTac - Page 75

SAT_DET
DET_SW
TX_KEY
AOC_DRIVE
DET
14
8
12 11 10
7
2
FL 451
B
C
Q420
FL452
Q418
33 SW_VCC 31 PRE_IN
430MHz
41 LO2_BASE
42 LO2_EMITTER
43 LO2_CP
LOOP FILTER
26 PRSC_IN
CR 250
Q203
Q202
RX 2.75
G
S
S
G
D
D
B+
V2_O UT 19
V2_D RIVE 18
MA IN_VCC 25
VI_D RIVE 13
REG_SPLY 17
LIM _OUT 4
OFST_CP 10
Supplies 13 MHz oscillator
PLL dividers & U501 DAC
references
Supplies limitor amps
2nd LO, IF circuts&
references
Q443
Q442
SW_RF
from J400
2
5
3
6
7
4
RX_EN
TX_EN
ANT
(- 3.5dBm)
B
E
C
(+13 dB)
(- 3.5dB)
(+10dB)
(- 6dB)
FL420
215 MHz
(+7dB)
FL453
(- 3,5dB)
RX
LOCAL
OSCILLATOR
RX 2.75V
Q250
Q251
Q252
Y201
AFC
59 CLK_OUT
XTAL_BASE 57
17
11, 22, 44
RXI 46
IQ_REF 47
RXQ 48
TXQ 61
TXI 63
SPI_CLK 53
SPI_DATA 52
B+
R475V
15
16
14
29
78
77
24
21
TXQ_P
TXI_P
RF_SCK
RF_SPI
13 MHz CLOCK
U703,17
42
73
69
17
2, 5,10,18
25, 41, 44,
45, 53, 64, 70
13_DCLK_B
from U703, 37
RESET
TX_KEY
from U701, 6
U310, 10
RX_ACQ
R275V
AOC_OUT 33
SAT_DET 67
DE T_SW 66
to U3 10, 8
from U310, 12 to U3 10, 11
240 MHz
OFST_E 6
OFST_B 7
21 SF_OUT
TX
OFFSET
LOCAL
OSCILLATOR
MAIN _VCO
1
4
14
8
CR300
TX
VCO
Q300
C
R275V
1747,8 MHz
120 MHz
Q303
U400
IPA
(+15dB)
(+15dB)
C
B
Low CH.= 1.50 Vdc
Mid. CH.= 1.74 Vdc
High CH.= 1.87 Vdc
(1627,8 CH 700)
Vref from U900, 11
16
SUPER FILTER VOLTAGE
1842,8 MHz (CH 700)
MAIN VCO
1627,8 MHz (CH 700)
23 MAIN_CP
MODEM
U501
GIF_SYN
U201
U310
9
DM_CS
75
76
MDM_RD
MDM_WR
RF_START
51
1590 - 1665 MHz
-24dBm
215 MHz
PLL_VCC
1747,8 MHz
RF ATTN
R221
(-8dB)
RF ATTN
R393
(- 4 dB)
CR390
U301
11-15
7
RF_IN
B+
EXITER
Low CH.= 2,02 Vdc
Mid. CH.= 2,55 Vdc
High CH.= 1.81 Vdc
SUPER
FILTER
to U701
Q421
CHARGE
PUMP
CR 201
CR 431
CR 203
2 ,12
7
9,10
DM_CS
R275
U300 / TIC
PHASE
DET.
R475
Osc.
circuty
discrete
Osc.
circuty
discrete
SPI DATA BUS
DM_CS
B
Part
Designa-
tor
Part
Description
Part
Number
Part
Designa-
tor
Part
Description
Part
Number
CR201 Master Xtal Varactor 4809641F04 Q303 Tx Exciter Transistor 4809527E19
CR203 Tx Local VCO Varactor 4809641F03 Q442 Rf Switch Control Transistor 4809939C08
CR250 Main VCO Varactor 4809641F02 Q443 Rf Switch Control Transistor 4809939C08
CR300 Tx VCO Varactor 4809612F03 Shield 30 Top of Frontend / Antenna
Switch
2609225D01
CR390 Transmit Diode 4809948D10 Shield 31 Top of Main VCO / FL420 2609226D01
CR431 Rx Local VCO Varactor 4809641F03 Shield 32 Top of TIC / TX VCO 2609227D01
CR908 Signal Indicator LED 4809118D01 Shield 33 Top of GIFSYN 2609228D01
FL420 IF Saw Filter 9109179E01 Shield 34 Top of PA 2609229D01
FL451 1st Rx Filter 9109068E02 Shield 35 Top of Modem 2609230D01
FL452 2nd Rx Filter 9109155K01 SH60 - 63 Clips Ext. Battery Flexprint 4209388S01
FL453 VCO Filter 9109068E01 U201 GIF SYN 5109632D92
Q202 Receive Power Transistor 4809579E18 U300 TIC 5109632D94
Q203 GIF SYN Power Transistor 4809579E18 U301 PA 5109908K31
Q300 Tx VCO Transistor 4809940E01 U310 PAC 5109632D08
Q418 Rx Amplifier Transistor 4809527E20 U401 Rf Switch 5109572E03
Q420 Rx Mixer 4809940E01 U501 Modem 5199281C03
from U701
pin 21
from U701
RX_EN
RX_EN
by Q501
pin 5, & inverted
pin 16
TX_EN
from U701
by Q501
pin 5 inverted
60
RX SIGNAL PATH
TX SIGNAL PATH
MAIN VCO SIGNAL PATH
TUNING VOLTAGES
REFERENCE CLOCK
Orderable Part
Non - Orderable Part
RF BOARD SIGNALS
Tx SIGNALS - 11062#, 1215#, 310#
Frequency 217Hz - 1ms/cm
SAT_DET
3Vpp
Power Step:
15 - 280mVpp
04 - 520mVpp
AOC
TX_KEY
2,75Vpp
Power Step:
12-15 - 900mVpp
04-11 - 50mVpp
DET_SW
3Vpp
TX_EN
DM_CS
2,8Vpp
TXI
2.1Vpp
2.1Vpp
TXQ
Modem Callprocessor Interface
MDM_RD
MDM_WR
2,8Vpp
500us/cm
2,8Vpp
500us/cm
Rx SIGNALS - 11062#, 262000#, 25013#, 241#
Frequency 217Hz - 1ms/cm
RX_ACQ
2,8Vpp
RF_START
20us/cm
2,8Vpp
500us/cm
1.8Vpp
500us/cm
RXI
1.8Vpp
500us/cm
RXQ
1.38Vrms
500us/cm
IQ_REF
Rx SIGNALS - In Standby Mode
Signal from PAC to Speech Coder.
When PA is at or near saturation signal is low, telling Speech Coder to reduce AOC drive
When the PA is not near saturation this is high, telling Speech Coder to increase AOC drive.
Signal from the Speech Coder to the PAC
When this signal is low, the internal gain in the PAC is unity.
When this signal is high, the internal gain in the PAC is 1.
From uP to PAC.
This is a timing signal to the PAC to provide the current path for the initial loop precharge
Signal from SMOC to PAC.
This is a linear control voltage for ramp up and ramp down of the PA output level.
This controls the voltage on the exciter control output (EXC) from the PAC.
Signal from uP but inverted via Q502 and used to time:-
1. GIF SYN
2. TIC
3. RF Switch
Enables Tx Path when high
Signal from uP inverted via Q504.
Enables TX VCO.
When high, this enables Tx path.
From Speech Coder IC to GIF SYN
This signal is the in-phase input to the I-Q Modulator of the GIF SYN.
From Speech Coder IC to GIF SYN
This signal is the quadrature input to the I-Q Modulator of the GIF SYN.
From uP to SSpeech Coder.
This signal indicates when the uP is reading data from the Speech Coder. High when enabled.
From uP to Speech Coder.
This signal indicates when the uP is writing data to the Speech Coder. High when enabled.
From uP to Speech Coder
This is an interrupt from the uP to the Speech Coder. When high this indicates to the Speech
Coder the beginning of the receive burst.
From uP to GIF SYN
Signal to drive the GIFSYN IC. This is a pulsed signal which controls the sending of SPI data
to the GIFSYN for all RF functions.-
From GIF Syn to Speech Coder IC.
This is a baseband analogue signal to A/D convertors of Speech Coder
From GIF Syn to Speech Coder IC.
This is a baseband analogue signal to A/D convertors of Speech Coder
From Speech Coder to GIF Syn.
This is a DC level from Speech coder for the RXI and Q signals to ride on.
Europe Middle East & Africa Customer Services 03.07.98
LEVEL 3 COLOUR DIAGRAMS Rev. 1.2
DCS StarTAC
Colin Jack, Michael Hansen, Billy Jenkins, Ralf Lorenzen Page 2 of 2
REVISIONS
# press 2 sec. Enter Manual Test Mode
01 # Exit Manual Test Mode
07 # Mute Rx Audio Path
08 # Unmute Rx Audio Path
09 # Mute Tx Audio Path
10 # Unmute Tx Audio Path
11 # Program Main Local Osc. to Channelbb
12 # Set Tx Power level to fixed valure
19 # Display SW Version Number of Call Processor
20 # Display SW Version Number of Modem
22 # Display SW Version Number of Speech Coder
25 # Set Continuous AGC
26xxxx # Set Continuous AFC
31x # Initiate Pseudo-Random Sequence with Midamble
33xxx # Synchronize to BCH Carrier
36 # Initiate Acoustic Loopback
37 # Stop Test
45xxx # Serving Cell Power Level
46 # Display Current Valure od AFC DAC
47x # Set Audio Volume
58 / xxxxxx # Display / Modify Security Code
59 / xxx # Display / Modify Lock Code
60 # Display IMEI
7100 # Display Error Code
TEST COMMANDS
CHANNEL Tx Rx
MAIN
VCO
Rx I.F
Rx I.F
L.O
Tx I.F
Tx I.F
L.O
512-Low 1710 1805 1590 215 430 120 240
700-Middle 1747,8 1842,8 1627,8 215 430 120 240
885-High 1785 1880 1665 215 430 120 240
FREQUENCIES
RF LAYER - ORDERABLE SPARES
Motorola Confidential Proprietary
DCS StarTAC RF BLOCK DIAGRAM
RX275