aduc7030 Analog Devices, Inc., aduc7030 Datasheet - Page 75

• Manufacturer Part Number: aduc7030
• Description: Integrated Precision Battery Sensor For Automotive
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
PLLCON Pre-write Key PLLKEY0:
Name:
Address:
Access:
Key:
Function:
PLLCON Register:
Name:
Address:
Default Value:
Access:
Function:
Table 39. PLLCON MMR Bit description
1
2
POWCON Pre-write Key POWKEY0:
Name:
Address:
Access:
Key:
Function:
Bit
31-2
1-0
If user code switches MCU clock sources, a dummy MCU cycle should be included after the clock switch is written to PLLCON
POWCON[7] must be enabled prior to switching to this clock source
Description
Reserved, these bits should be written as 0 by user code
PLL Clock Source
00
01
10
11
PLLKEY0
0xFFFF0410
Write Only
0x000000AA
PLLCON is a keyed register that requires a 32-Bit
key value to be written before and after
PLLCON. PLLKEY0 is the Pre-Write Key.
POWKEY0
0xFFFF0404
Write Only
0x00000001
POWCON is a keyed register that requires a 32-
Bit key value to be written before and after
POWCON. POWKEY0 is the Pre-Write Key.
PLLCON
0xFFFF0414
0x00
Read/Write
This 8-bit register allows user code dynamically select the PLL source clock from three different oscillator sources.
1
Low Power 131kHz oscillator
Precision 131kHz oscillator
External 32.768kHz Crystal
Reserved
Rev. PrE | Page 75 of 150
2
PLLCON Pre-write Key PLLKEY1:
Name:
Address:
Access:
Key:
Function:
POWCON Pre-write Key POWKEY1:
Name:
Address:
Access:
Key:
Function:
PLLKEY1
0xFFFF0418
Write Only
0x00000055
PLLCON is a keyed register that requires a 32-Bit
key value to be written before and after
PLLCON. PLLKEY1 is the Post-Write Key.
POWKEY1
0xFFFF040C
Write Only
0x000000F4
POWCON is a keyed register that requires a 32-
Bit key value to be written before and after
POWCON. POWKEY1 is the Post-Write Key.
ADuC7030/ADuC7033