TNETV2501INPGF datasheet(70/197 Pages) TI1

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Functional Overview

December 2002 − Revised November 2008

SPRS206K

3.9.5.4

PLL Divider1 Register (PLLDIV1) for SYSCLK1

This register controls the value of the divider D1 for SYSCLK1. It is in both the BYPASS and PLL paths.

D1EN

Reserved

R/W, 1

R, 0000000

Reserved

PLLDIV1

R, 000

R/W, 00011

LEGEND: R = Read, W = Write, n = value at reset

Figure 3−18. PLL Divider 1 Register Layout (0x1C8C)

Table 3−15. PLL Divider 1 Register Bit Field Description

BIT NAME

BIT NO.

ACCESS

RESET VALUE

DESCRIPTION

D1EN

R/W

Divider D1 enable

D1EN = 0:

Divider 1 disabled

D1EN = 1:

Divider 1 enabled

Reserved

14:5

0000000000

Reserved. Reads return 0. Writes have no effect.

PLLDIV1

4:0

R/W

00011

Divider D1 ratio (SYSCLK1 divider)

PLLDIV1 = 00000:

Divide by 1

PLLDIV1 = 00001:

Divide by 2

PLLDIV1 = 00010:

Reserved

PLLDIV1 = 00011:

Divide by 4

PLLDIV1 = 00100−11111: Reserved

3.9.5.5

PLL Divider2 Register (PLLDIV2) for SYSCLK2

This register controls the value of the divider D2 for SYSCLK2. It is in both the BYPASS and PLL paths.

D2EN

Reserved

R/W, 1

R, 0000000

Reserved

PLLDIV2

R, 000

R/W, 00011

LEGEND: R = Read, W = Write, n = value at reset

Figure 3−19. PLL Divider 2 Register Layout (0x1C8E)

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