Si5321

Rev. 2.3

9

Transitionless Period Required

on CLKIN for Detecting a LOS

Condition.

INFRQSEL[2:0] = 001

INFRQSEL[2:0] = 010

INFRQSEL[2:0] = 011

INFRQSEL[2:0] = 100

INFRQSEL[2:0] = 101

INFRQSEL[2:0] = 110

Figure 3

—

—

—

—

—

—

s

Recovery Time for Clearing an

LOS Condition

VALTIME = 0

VALTIME = 1

Measured from when a

valid reference clock is

applied until the LOS flag

clears

1.6

90

—

—

3.2

220

ms

Table 3. AC Characteristics (Continued)

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Note: The Si5321 provides a 1/32x, 1/16x, 1/8x, 1/4x, 1/2x, 1x, 2x, 4x, 8x, 16x, 32x, 64x, or 128x clock multiplication function

with an option for additional frequency scaling by a factor of 255/238, 238/255, 255/237, 237/255, 66/64, or 64/66 for

FEC rate conversion.