RSKRX111
6. Configuration
R20UT2193EG0200 Rev. 2.00
Page 19 of 42
Apr 14, 2014
6.3
Power Supply Configuration
below details the function of the option links associated with power supply configuration.
Signal Name
Exclusive Function
Header connection
Function
IC Pin
Header
Pin
Fit
Remove
VBUS
Connects VBUS to power supply line of 5V.
U4.IN
J6
2-3
-
Disconnect.
-
J6
1-2 /
All open
-
VBUS
Bus-Powered
-
J9
1-2
-
Self-Powered
-
J9
2-3
-
EXT_BATT
Connects EXT_BATT to power supply line
of 5V.
U4.IN
J6
1-2
-
Disconnect.
-
J6
2-3 /
All open
-
CON_5V
Connects CON_5V to power supply line
of 5V.
U4.IN
JA1.1
R94
-
Disconnect.
-
-
-
R94
USB_5V
Connects USB_5V to USB Host power
control IC.
U7.VIN
-
R96, R178
-
Disconnect.
-
-
-
R96
Unregulated_VCC
Connects Unregulated_VCC to power
supply line of 5V.
U4.IN
JA6.23
R95
-
Disconnect.
-
-
-
R95
REGSEL
Configures regulator IC output as 3V3.
U4.OUT
J7
open
-
Configures regulator IC output as 1V8.
U4.OUT
J7
shorted-pin
-
CON_3V3
Connects CON_3V3 to power supply line
of 3V3.
U4.OUT
JA1.3
R101
-
Disconnect.
-
-
-
R101
EXT_CHG
Enable Battery Charge Function.
-
J13
1-2
-
Disable Battery Charge Function.
-
J13
open
-
EXT_VBUS
Connects EXT_VBUS to line of VBUS.
-
-
R185
-
Disconnect.
-
JA6.17
-
R185
PWR
Connects PWR connector to power
supply line of 5V.
-
-
R92
-
Disconnect.
-
-
-
R92
PWR/VBUS/EXT_BATT
/CON_5V
/Unregulated_VCC
Connects PWR/VBUS/EXT_BATT
/CON_5V/Unregulated_VCC to Board_5V
and regulator IC.
U4.IN
-
R91
-
Disconnect.
-
-
-
R91
UC_VCC
Connected to the power supply MCU.
-
J8
R102
/ J8:shorted
-
Enable current probe(J7) for MCU
-
J8
J8: open
R102
VBAT,
Board_5V
Connects VBAT to BAT of LIN transceiver.
U5.7
J10.1
-
R93
Connects Board_5V to BAT of LIN
transceiver.
-
R93
-
Table 6-3: Power Supply Option Links
6.4
Clock Configuration
below details the function of the option links associated with clock configuration.
Signal Name
Exclusive Function
Header connection
Function
Header Pin
Fit
Remove
CON_XTAL
Connects external clock or Micro controller pin headers to
MCU.
JA2.2, J1.11
R149
R148
Disconnect.
-
R149
XTAL
Connect the crystal X1.1.
-
R148
R149
Disconnect.
-
-
R148
CON_EXTAL
Connect Micro controller pin headers to MCU.
J1.12
R143
R145
Disconnect.
-
R143
EXTAL
Connect the crystal X1.2.
-
R145
R143
Disconnect.
-
-
R145
XCOUT
Connect the crystal X2.1.
-
R130
-
Disconnect.
-
-
R130
XCIN
Connect the crystal X2.4.
-
R131
R132
Disconnect.
-
R132
R131
Table 6-4: Clock Option Links
Содержание RSKRX111
Страница 43: ...R20UT2193EG0200 RX111 Group ...