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38K2 데이터시트(PDF) 52 Page - Renesas Technology Corp

부품명 38K2
상세설명  RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  358 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

38K2 데이터시트(HTML) 52 Page - Renesas Technology Corp

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FUNCTIONAL DESCRIPTION
Rev.2.00
Oct 15, 2006
page 33 of 130
38K2 Group
REJ09B0338-0200
HARDWARE
USB Related Registers
The USB related registers are shown below.
Fig. 31 Structure of USB control register
Fig. 32 Structure of USB function/HUB enable register
b7
At reset
W
Function
Bit name
Bit symbol
b0
Remote wakeup bit
TrON output control bit
TrON output enable bit
USB reference voltage control bit
USB reference voltage enable bit
USB difference input enable bit
USB clock select bit
USB module operation enable bit
WKUP
TRONCON
TRONE
VREFCON
VREFE
USBDIFE
UCLKCON
USBE
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
–
–
–
–
–
–
–
–
0
0
0
0
0
0
0
0
USB control register (USBCON) [address 001016]
–: State remaining
0 : Returning to BUS idle state by writing “1” first and
then “0”. (Remote wakeup signal)
1 : K-state output
0 : “L” output mode (valid in TRONE = “1”)
1 : “H” output mode (valid in TRONE = “1”)
0 : TrON port output disabled (Hi-Z state)
1 : TrON port output enabled
0 : Normal mode (valid in VREFE = “1”)
1 : Low current mode (valid in VREFE = “1”)
0 : USB reference voltage circuit operation disabled
1 : USB reference voltage circuit operation enabled
0 : Upstream-port difference input circuit operation disabled
1 : Upstream--port difference input circuit operation enabled
0 : External oscillating clock f(XIN)
1 : PLL circuit output clock (fVCO)
0 : USB module reset
1 : USB module operation enabled
H/W
S/W
R
b7
Bit name
Bit symbol
b0
USB function enable bit
USB HUB enable bit
Not used
AD0E
AD1E
b7:b2
–
–
–
0
0
–
USB function/HUB enable register (USBAE) [address 001116]
0: USB function address register invalidated
1: USB function address register validated
0: USB HUB address register invalidated
1: USB HUB address register validated
Write “0” when writing.
“0” is read when reading.
At reset
Function
H/W
S/W
O
O
O
O
O
O
–: State remaining
0
0
0
000
W
R



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