AT89C5132-ROTIL datasheet(16/182 Pages) ATMEL

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4173E–USB–09/07

AT89C5132

Table 3. PLLCON Register

PLLCON (S:E9h) – PLL Control Register

Reset Value = 0000 1000b

Table 4. PLLRDIV Register

PLLRDIV (S:EFh) – PLL R Divider Register

Reset Value = 0000 0000b

PLLRES

PLLEN

PLOCK

Bit Number

Bit

Mnemonic

Description

7 - 6

R1:0

PLL Least Significant Bits R Divider

2 LSB of the 10-bit R divider.

5 - 4

Reserved

The values read from these Bits are always 0. Do not set these Bits.

PLLRES

PLL Reset Bit

Set this bit to reset the PLL.

Clear this bit to free the PLL and allow enabling.

Reserved

The values read from this bit is always 0. Do not set this bit.

PLLEN

PLL Enable Bit

Set to enable the PLL.

Clear to disable the PLL.

PLOCK

PLL Lock Indicator

Set by hardware when PLL is locked.

Clear by hardware when PLL is unlocked.

Bit Number

Bit

Mnemonic

Description

7 - 0

R9:2

PLL Most Significant Bits R Divider

8 MSB of the 10-bit R divider.

AT89C5132-ROTIL Datasheet(PDF) 16 Page - ATMEL Corporation

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