Rainbow-electronics AT89C5132 Uživatelský manuál stáhnout pdf (Strana 16)

AT8xC5132

4173A–8051–08/02

Table 17. PLLCON Register

PLLCON (S:E9h) – PLL Control Register

Reset Value = 0000 1000b

Table 18. PLLNDIV Register

PLLNDIV (S:EEh) – PLL N Divider Register

Reset Value = 0000 0000b

76543210

R1 R0 - - 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.

3 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.

1 PLLEN

PLL Enable Bit

Set to enable the PLL.

Clear to disable the PLL.

0PLOCK

PLL Lock Indicator

Set by hardware when PLL is locked.

Clear by hardware when PLL is unlocked.

76543210

- N6N5N4N3N2N1N0

Bit

Number

Bit

Mnemonic Description

Reserved

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

6 - 0 N6:0

PLL N Divider

7-bit N divider.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 161 162

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