Silicon Laboratories C8051F347 - Manual (Page 72)

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
72 Rev. 1.3
SFR Definition 8.1. REG0CN: Voltage Regulator Control
Bit7: REGDIS: Voltage Regulator Disable.
0: Voltage Regulator Enabled.
1: Voltage Regulator Disabled.
Bit6: VBSTAT: VBUS Signal Status.
0: VBUS signal currently absent (device not attached to USB network).
1: VBUS signal currently present (device attached to USB network).
Bit5: VBPOL: VBUS Interrupt Polarity Select.
This bit selects the VBUS interrupt polarity.
0: VBUS interrupt active when VBUS is low.
1: VBUS interrupt active when VBUS is high.
Bit4: REGMOD: Voltage Regulator Mode Select.
This bit selects the Voltage Regulator mode. When REGMOD is set to ‘1’, the voltage regu-
lator operates in low power (suspend) mode.
0: USB0 Voltage Regulator in normal mode.
1: USB0 Voltage Regulator in low power mode.
Bits3–0: Reserved. Read = 0000b. Must Write = 0000b.
R/W R R/W R/W R/W R/W R/W R/W Reset Value
REGDIS VBSTAT VBPOL REGMOD Reserved Reserved Reserved Reserved 00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:
0xC9