SLG46127 datasheet(62/88 Pages) DIALOG

部品番号	SLG46127

部品情報	GreenPAK Programmable Mixed-signal Matrix

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000-0046127-101

Page 61 of 87

SLG46127

The user can select one of these fundamental frequencies for the RC OSC Macrocell, or the fundamental frequency can also

come from an external clock input (PIN11). There are two divider stages that allow the user flexibility for introducing clock signals

on various Connection Matrix Input lines. The first stage divider (also known as the clock pre-divider) allows the selection of /1,

/2, /4 or /8 divide down frequency from the fundamental. There are two second stage divider controls (OUT0 and OUT1). Each

has its own input of one frequency from the first stage divider, and outputs five different frequencies on Connection Matrix Input

lines <23>, and <24>. See Figure 43 below for details of the frequencies for each of these five Connection Matrix Inputs.

If PWR DOWN input of oscillator is LOW, the oscillator will be turned on. If PWR DOWN input of oscillator is HIGH the oscillator

will be turned off. The PWR DOWN signal has the highest priority.

16.2 RC OSC Block Diagram

Figure 43. RC OSC Block Diagram

Internal RCO

reg <303>

0: 25 kHz

1: 2 MHz

/ 2

/ 3

/ 4

/ 8

/ 12

/ 24

/ 64

To Connection Matrix Input <23>

reg <308:306>

DIV /1/2/4/8

reg <305:304>

First Stage

Divider

Second Stage

Divider

PIN 11 Ext. Clock

Ext. Clk Sel reg <312>

0

1

reg <311:309>

To Connection Matrix Input <24>

From Connection Matrix Output <38>

PWR DOWN

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