at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 38

• Manufacturer Part Number: at85c51snd3
• Description: At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

SFR Registers
Table 39. C51 Core SFRs
Table 40. Power and System Management
Note:
Table 41. Clock Management Unit SFRs
38
PCON
PSTA
AUXR1
VBAT
SVERS
CKCON
CKEN
CKSEL
PLLCLK
MMCCLK
ACC
B
PSW
SP
DPL
DPH
PPCON
Mnemonic Add Name
Mnemonic Add Name
Mnemonic Add Name
Available in AT85C51SND3B2 only.
AT85C51SND3B
0.BCh PLL Clock
0.BDh MMC Clock
Y.D0h Program Status Word
Y.C0h Peripheral Pagination
0.BAh Clock Selection
Y.E0h Accumulator
Y.F0h B Register
Y.81h Stack Pointer
Y.82h Data Pointer Low Byte
Y.83h Data Pointer High Byte
0.87h Power Control
0.86h Power Status
0.A2h Auxiliary Register 1
0.85h Battery Voltage Monitoring
3.97h Silicon Version
0.8Fh Clock Control
0.B9h Clock Enable
The Special Function Registers (SFRs) of the AT85C51SND3B fall into the categories
detailed in Table 39 to Table 58. Address is identified as “P.XXh” where P can take the
values detailed in Table 38 and XXh is the hexadecimal address from 80h to FFh
Table 38. Page Address Notation
The SFRs mapping within pages is provided together with SFR reset value in Table 58
to Table 58. In these tables, the bit-addressable registers are identified by Note 1.
3-0
P
Y
CKGENE
VBCEN
UVDET
VBEN
CY
7
-
7
-
7
-
Comment
Register mapped in all pages
Register mapped in the corresponding page
MMCCKS2:0
DNFCKS2:0
VBERR
VBPEN
HVDET
PLLEN
WDX2
AC
6
6
6
-
-
PLLR3:0
DCPBST
F0
5
-
5
-
-
-
5
-
-
PLOCK
RS1
GF0
4
-
4
-
-
4
PLLCKS1:0
OSCF1:0
SV7:0
MMCKEN
DCEN*
RS0
GF3
3
3
3
-
MMCDIV4:0
WDTRST
SIOCKS
PMLCK
VB4:0
T1X2
OV
0
2
2
2
-
PLLN3:0
PPS3:0
SIOCKEN
EXTRST
T0X2
PD
F1
1
1
-
1
SYSCKS1:0
7632D–MP3–01/07
DFCKEN
PFDRST
DPS
IDL
X2
P
0
0
0