AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 21

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

Registers
4109E–8051–06/03
Table 21. AUXR1 Register
AUXR1 (S:A2h) – Auxiliary Register 1
Reset Value = XXXX 00X0b
Note:
Number
7 - 6
Bit
7
-
5
4
3
2
1
0
1. ENBOOT bit is only available in AT89C51SND1C product.
Mnemonic Description
ENBOOT
GF3
DPS
Bit
6
-
0
-
-
-
1
Reserved
The value read from these bits are indeterminate. Do not set these bits.
Enable Boot Flash
Set this bit to map the boot Flash in the code space between at addresses F000h
to FFFFh.
Clear this bit to disable boot Flash.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
General Flag
This bit is a general-purpose user flag.
Always Zero
This bit is stuck to logic 0 to allow INC AUXR1 instruction without affecting GF3
flag.
Reserved for Data Pointer Extension.
Data Pointer Select Bit
Set to select second data pointer: DPTR1.
Clear to select first data pointer: DPTR0.
ENBOOT
5
4
-
GF3
3
AT8xC51SND1C
2
0
1
-
DPS
0
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