XM014429B datasheet(65/83 Pages) XMOS

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XU6--QF6B Datasheet

Reserved.

XCORE1_GLOBAL_DEBUG_CONFIG 0x11

Reserved.

Bits

Perm

Init

Description

Identier

Reserved

Reserved.

GLOBAL_DEBUG_ENABLE_GLOBAL_DEBUG_REQ

Reserved.

GLOBAL_DEBUG_ENABLE_INDEBUG

Reserved.

D.6 Secondary PLL Fractional N Divider SS_APP_PLL_FRAC_N_DIVIDER 0x12

Controls an optional fractional N Divider on the secondary PLL. When enabled, the mul-

tiplier F for the secondary PLL will effectively become F + f+1

p+1 , f must be less than p.

This is achieved by running the PLL with a divider F for the rst part of the fractional

period, and then F + 1 for the remainder of the period. The period is measured in input

clocks divided by R + 1.

Bits

Perm

Init

Description

Identier

When set to , the secondary PLL will be a fractional N divided PLL

SS_FRAC_N_ENABLE

Reserved

The f value for the fractional divider. The number of clock cycles in the

period that a divider F + 1 is used is f + 1.

SS_FRAC_N_F_HIGH_CYC_CNT

The p value for the fractional divider. The period over which the frac-

tional N divider oscillates between F and F + 1 is p + 1

SS_FRAC_N_PERIOD_CYC_CNT

Secondary

PLL Fractional

N Divider

Debug source

GLOBAL_DEBUG_SOURCE 0x1F

Contains the source of the most recent debug event.

Bits

Perm

Init

Description

Identier

Reserved

Reserved.

GLOBAL_DEBUG_SOURCE_EXTERNAL_PAD_INDEBUG

Reserved

If set, XCore is the source of last GlobalDebug event.

GLOBAL_DEBUG_SOURCE_XCORE1_INDEBUG

If set, XCore is the source of last GlobalDebug event.

GLOBAL_DEBUG_SOURCE_XCORE0_INDEBUG

xF:

Debug source

XM014429B Datasheet(PDF) 65 Page - Xmos Ltd.

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