Motorola Timeport 280 Service Manual page 54

J903
SMART CARD CONN
URXD2_UF
UTXD2_UF
URTS2_UF UCTS2_UF
B+ Q900
SIM_PD1_UF
VSIM_EN1_UF
U902
SPICS8 SC2A_UF
SCKA_UF URXD2_SIM_RX1
UCTS2_SIM_RST1
STDA_UF INT3_UF VSIM_EN1
SPICS6 SPICS7_UF
URTS2_SIM_CLK1
VR943
UTXD2
B+
Q600
J901
SW_B+
CE BUS
SW_B+_EN
BATT_FDBK
EXT_BATT
USB+_UTXD
USB_UXRD
SW_B+
USB_PWR
USB_PWR
UCTS
BATT_FDBK
UCDC
URI
USB+
UDTR
USB-
UDSR
UCTS_CE
UDCD
URI_CE
UDTR
UDSR_CE
INT4
INT5
ON_OFF
AUDIO_OUT
AUDIO_IN
V2
OC3
SIM BLOCK
J900
LS_SIM_RST
SIM_IO
LS_SIM_CLK
5V
V_BOOST
Y900
RTC BATT
32,768kHz
M810
J650
Motor
HS_SPKR
BOOM MIC
VR901
VR902
V2
U1912
SPEAKER
HS_SPKR
CONTACT PADS
J904
SPK-
J902
SPK+
VR903
P280 - AL SCHEMATICS
SR_VCC
DATA(15:0)
CR700
U702
V1
EB1_N
EB0_N
SR_CS V3
OE_N
RW_N
U701
INT3
SPICS7
BRST_CLK
SIM_PD1 FLASH_CS
OE_N
EB1_N
SIM_TX1
ADV_N
RESET_OUT
ECB_N
V3
U703
EB1_N
EB0_N
CE2
OE_N
RW_N
CE5
CE3
CE1
FLASH_CS
BRST_CLK
ECB_N
ADDRESS(23:0)
EB1_N
V2
B+
VSIM1
V_BOOST
CR901
V1
V3
BATTERY CHARGER
V_BUCK
B+
USB_PWR CR932
EXT_B+
USB_VCCR
CR902
USB_33 VREF
CHRG_C
V2
U904
BATT+
V3
BATT_FDBK
B+ B+
USB+
U904 BL_SNK
LED_RED
B+
LED_GRN
SIM_TX
B+
USB-
USB_VP
USB_EOP
UTXD_VDOUT
TX_KEY
URTS_USBXRXD
URXD_USBVM
USB_TXENB
SIM_CLK
SIM_RST
SIM_TX
V1
SIM_RX
PWR_SW
THERM_BIAS
U900
CR903
GCAP3
GCAP_INT
EXT_B+
GCAP_CLK
STBY
SR_CS
CE1 BB_SPI_CLK
SR_VCC BB_MOSI
V3 BB_MISO
GCAP_SPI_CS
SIM_PD0
ALRT_VCC
VR801
DIG_AUD(3:0)
B+
Q938
PA_DRV
ALRT_VCC
ALERT
AL900
DATALOG_N
VR907
VR908
V3
V2
JTAG
V3
V3
V3
V2 DVDD
V2
V2
V2
MCU_DE
TMS
TDO
IVDD
V3
JVDD
OVCC RESET
CVDD BVDD MOD
GCAP_CLK GCAP_13MHz
MAGIC_13MHz
OC3
WDOG
RESET_OUT
RESET
USB_VP
IRDA_TX
IRDA_RX
DATALOG_N
IRDA_EN
USB_TXENB
USB_EOP
INT3
URTS_USBXRXD
GCAP_INT
U700
PATRIOT
RW_N SW_B+2_EN
SPICS8
CE4 SPICS7
CE2
SDI_D_C
GCAP_SPI_CS
SPICS6 KBR6
ADV_N DISP_SPI_CS
MAGIC_SPI_CS
BB_MOSI
BB_MISO
EB0_N BB_SPI_CLK
RF_MOSI
OE_N
RF_SPI_CLK
KBR5
KBR4
UTXD
TP15
TP16
URXD
MIDRATE CHARGER
SIM_PD0
EXT_B+
BATT+
B+
Q942
BATT+
Q945
VR940
Q932
CR940
EXT_B+
EXT_BATT
MAIN
V2
BATT+
Q944
J912
BATTERY CONN
EXT_BATT
V2
CR950
CR850
BATT_FDBK
V2
U1909
V3 WDOG
ALRT_VCC
V2
RESET CR500
DATALOG_N
VR501
LED_RED
LED_GRN
BL_SNK
J910
MICROPHONE
VAG
DNP
IRDA_EN
IRDA_TX
IRDA_RX
V2 V2 V2
U1908
U1906 U1907
UCTS2_SIM_RST1 UTXD2 URXD2_SIM_RX1
UCTS_CE URI_CE UDSR_CE
UCTS URI UDSR
DSP_DE
TCK
TRST
TDI
V2
HS_INT
PWR_SW
S500
SWITCH
KBC0
KBC0
KBR1
KBR1
KBR0 KBR0
KBR7
KBC1
KBR6
VR910
VR904
VR909
KBR5
VR948
KBR7 KBR5
KBC0
KBC1
J700
DISPLAY CONN
BB_MOSI
SDI_D_C
RESET_OUT
DISP_SPI_CS
IVDD
BB_SPI_CLK
BL_SNK
ALRT_VCC
KEYPAD LED's
V2
IRDA
V3
U990
V2
RX SIGNAL PATH
TX SIGNAL PATH
MAIN VCO SIGNAL PATH
TUNING VOLTAGES
13 MHz REFERENCE CLOCK
DATA BUS
ADDRESS BUS
TEXT REFERENCE SIGNALS