ICS841664I datasheet(3/20 Pages) RENESAS

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ICS841664AGI REVISION A JULY 15, 2013

ICS841664I Data Sheet

FEMTOCLOCK® CRYSTAL-TO-HCSL CLOCK GENERATOR

Function Tables

Table 3A. NA, NB FSELx Function Table (fref = 25MHz)

Table 3B. REF_SEL Function Table

Table 3C. BYPASS Function Table

NOTE 1: Asynchronous control.

Table 3D. MR/nOE Function Table

NOTE 1: Asynchronous control.

Table 3E. nREF_OE Function Table

NOTE 1: Asynchronous control.

Inputs

Outputs Frequency Settings

FSEL1

FSEL0

QA[0:1], nQA[0:1]

QB[0:1], nQB[0:1]

VCO/5 (125MHz)

VCO/4 (156.25MHz)

VCO/5 (125MHz)

QB0:1 = L, nQB0:1 = H

VCO/4 (156.25MHz)

Input

REF_SEL

Input Reference

0XTAL

1REF_IN

Input

BYPASS

PLL Configuration NOTE 1

PLL enabled

PLL bypassed (QA, QB = fref/Nx, x = A or B)

Input

MR/nOE

Function NOTE 1

Outputs enabled

Internal dividers reset, outputs disabled (High impedance)

Input

nREF_OE

Function NOTE 1

REF_OUT enabled

REF_OUT disabled (high impedance)

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