5. Schematic Diagrams
5-1 GSM Handset Schematic (Top Level) Circuit Diagram
(SHEET 3)
(SHEET 2)
SYNEN
SYNEN1
TXEN1
TXEN2
TXPOWER
VCC
POWER_BLOCK
+3VR
TC
+VBA
TT
3.3V
AGND
A
VCC
BA
T_VOL
T
DCIN
DCVOL
T
EXT_INT
GND
ON_OFF
POWER
REF
ADCN
REF
ADCP
REFTXN
REFTXP
R
TC_INT
R
TC_ON_OFF
TEMPERA
TURE
VCC
uP_ON_OFF
(SHEET 11)
SYNCLK
SYNDA
T
A
SYNEN
SYNEN1
TEMPERA
TURE
TXEN1
TXEN2
TXPOWER
VCC
uP_ON_OFF
RF PARTS
+VBA
TT
3.3V
AFC
AGC
ANT
A
VCC
CLK13M
GND
IRXN
IRXP
ITXN
ITXP
POWER
QRXN
QRXP
QTXN
QTXP
RXEN1
RXEN2
SYNCLK
SYNDA
T
A
LOGIC BLOCK
+3VR
TC
+VBA
TT
AFC
AGC
AGND
ANT
A
VCC
BA
T_VOL
T
CLK13M
DCIN
DCVOL
T
DGND
EXT_INT
GND
IRXN
IRXP
ITXN
ITXP
ON_OFF
QRXN
QRXP
QTXN
QTXP
REF
ADCN
REF
ADCP
REFTXN
REFTXP
R
TC_INT
R
TC_ON_OFF
RXEN1
RXEN2
Samsung Electronics
5-1
05-Schematic Diagrams 7/21/99 11:31 AM Page 1