C541U Datasheet, PDF (22/63 Pages) Siemens Semiconductor Group – 8 BIT CMOS MICROCONTROLLER

C541U
Table 3
Contents of the SFRs, SFRs in numeric order of their addresses (cont’d)
Addr Register Reset Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value¹⁾
ACH SCIEN XXXX- –
–
–
–
–
–
XX00B
B0H²⁾ P3
FFH
RD
WR T1
T0
INT1 INT0
B1H SYSCON XX10- –
–
EALE RMAP –
–
XXXXB
B8H²⁾ IP0
XXXX- –
–
–
–
PT1 PX1
0000B
B9H IP1
XXXX- –
–
–
–
–
PUDI
X000B
C0H ²⁾ WDCON XXXX- –
–
–
–
OWDS WDTS
0000B
C1H to C7H USB Device and Endpoint Register definition see table 3-3
D0H PSW
00H
2)
CY AC F0
RS1 RS0 OV
WCEN
DADD
–
PT0
PUEI
WDT
F1
TCEN
LED2
–
PX0
PSSC
SWDT
P
D2H EPSEL 80H
EPS7 0
0
0
0
EPS2 EPS1 EPS0
D3H USBVAL 00H
.7
.6
.5
.4
.3
.2
.1
.0
D4H ADROFF 00H ⁶⁾ 0
0
AO5 AO4 AO3 AO2 AO1 AO0
D6H GEPIR 00H
DRVI 0
0
EPI4 EPI3 EPI2 EPI1 EPI0
E0H²⁾ ACC
00H
.7
.6
.5
.4
.3
.2
.1
.0
E6H ⁷⁾ USBPWD 00H
0
0
SUSPIE DADDIE SUSP DADD TPWD RPWD
E7H ⁷⁾ USBDCR 00H
TYPE3 TYPE2 TYPE1 TYPE0 LEN3 LEN2 LEN1 LEN0
E8H ⁷⁾ USBDR0 00H
.7
.6
.5
.4
.3
.2
.1
.0
E9H ⁷⁾ USBDR1 00H
.7
.6
.5
.4
.3
.2
.1
.0
EAH ⁷⁾ USBDR2 00H
.7
.6
.5
.4
.3
.2
.1
.0
EBH ⁷⁾ USBDR3 00H
.7
.6
.5
.4
.3
.2
.1
.0
ECH⁷⁾ USBDR4 00H
.7
.6
.5
.4
.3
.2
.1
.0
EDH⁷⁾ USBDR5 00H
.7
.6
.5
.4
.3
.2
.1
.0
EEH ⁷⁾ USBDR6 00H
.7
.6
.5
.4
.3
.2
.1
.0
1) X means that the value is undefined and the location is reserved
2) Bit-addressable special function registers
3) SFR is located in the mapped SFR area. For accessing this SFR, bit RMAP in SFR SYSCON must be set.
4) These are read-only registers
5) The content of this SFR varies with the actual step of the C541U (e.g. 01_H for the first step)
6) The reset value of ADROFF is valid only if USBVAL has not been read or written since the last hardware reset
7) These registers are only used in USB low-speed operation.
Semiconductor Group
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