SN761646

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SLES251 – NOVEMBER 2009

Table 9. Read Data Symbol Description

SYMBOL

DESCRIPTION

DEFAULT

ADB

Address byte (Read mode)

ADB[7:0] = 11000001

POR

Power-on-reset flag

POR = 1

POR set: power on

POR reset: end-of-data transmission procedure

In-lock flag

PLL locked (FL = 1), unlocked (FL = 0)

(1)

Lock detector works by using phase error pulse at the phase detector. Lock flag (FL) is set or reset according to this pulse width

disciminator. Hence unstableness of PLL may cause the lock detect circuit to malfunction. In order to stable PLL, it is required to

evaluate application circuit in various condition of loop-gain (loo-p filter, CP current), and to verify with whole conditions of actual

application

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