
RSK+RX71M
6. Configuration
R20UT3217EG0100 Rev. 1.00
Page 30 of 71
Jan 23, 2015
6.4
Power Supply Configuration
below details the function of the option links associated with power supply configuration.
Reference
MCU Peripheral Selection
Destination Selection
Function
Fit
DNF
Interface Function
VBUS0, VBUSA
Connects VBUS0 to 5V Power rail.
J1.Pin2-3,
J23.Pin2-3, R222
R221
U14
Connects VBUSA to 5V Power rail.
J4.Pin2-3,
J23.Pin2-3,
R221
R52, R222
U14
Board_5V
Connects 5V power rail to Board_5V.
R242
-
IIC Pull-up resistors(R262, R414),
5V_PWR,
U11.3,
U13(R219),
J25.1, J26.1, TFT.1, 2
SD_3V3
Connects 3.3V power rail to SD_3V3.
R252
-
U15.1
CON_3V3
Connects CON_3V3 to 3.3V power rail. R257
-
JA1.3
VCCUSB
Connects 3V3 power rail to VCCUSB.
R217
R212
U1(VCC_USB)
Connects UC_VCC to VCCUSB.
R212
R217
U1(VCC_USB)
UC_VCC
Connects 3.3V power rail to UC_VCC
R218
-
J22, U1(VCC)
Table 6-4: Power Supply Option Links
below details the function of the jumpers associated with the power supply.
Reference Jumper Position
Explanation
Related Ref.
J22
Shorted Pin1-2
Connects 3.3V power rail to UC_VCC.
R218
All open
Enables current probe for measurement
MCU current consumption.
R218
J23
Shorted Pin1-2
Enables external battery input.
-
Shorted Pin2-3
Enables VBUS input.
R221, R222
All open
Disables external battery input and VBUS input.
-
J27
Shorted Pin1-2
Connects UC_VCC to VBAT.
-
Shorted Pin2-3
Connects external coin cell input.
-
All open
DO NOT SET
-
Table 6-5: Power Supply Jumper Settings
6.5
Clock Configuration
below details the function of the option links associated with clock configuration.
Reference
MCU Peripheral Selection
Destination Selection
Function
Fit
DNF
Interface Function
XTAL, EXTAL,
CON_EXTAL
Connects 24MHz crystal (X1) to RX71M. R66, R77
R65
U1(EXTAL, XTAL)
Connects CON_EXTAL to RX71M.
R65
R66, R77
U1(EXTAL)
XCIN, XCOUT
Connects 32.768kHz crystal (X2) to
RX71M.
R87, R88
R105
U1(XCIN, XCOUT)
Disconnects X2 from RX71M.
R105
R87, R88
U1(XCIN, XCOUT)
REF50CK0,
REF50CK1
Connects 25MHz crystal (X4) to PHY.
R64, R68
R63
U6(X1, X2)
Connects 50MHz oscillator (X5) to PHY
and REF50CK0 (RX71M).
R62, R63
R26, R64, R68 U6(X1), U1.85
Connects 50MHz oscillator (X5) to PHY
and REF50CK1 (RX71M).
R61, R63
R26, R64, R68 U6(X1), U1.146
Table 6-6: Clock Option Links
Содержание RX71M
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