TMPR4955AF datasheet(60/168 Pages) TOSHIBA

부품명	TMPR4955AF

상세설명	64-Bit TX System RISC TX49 Family

PDF	168 Pages

Scroll/Zoom	100%

제조업체	TOSHIBA [Toshiba Semiconductor]

홈페이지	http://www.semicon.toshiba.co.jp/eng

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60 / 168 page

Chapter 4 Clock Interface

4-4

4.3

Connecting Clocks to a Phase-Locked System

When the processor is used in a phase-locked system, the external agent must phase lock its

operation to a common MasterClock

MasterClock

MasterClock. In such a system, the delivery of data and data sampling

have common characteristics, even if the components have different delay values. For example,

transmission time (the amount of time a signal takes to move from one component to another

along a trace on the board) between any two components A and B of a phase-locked system can

be calculated from the following equation:

Transmission Time = (SClock period)

− (tDO for A) − (tDS for B) −

(Clock Jitter for A Max)

− (Clock Jitter for B Max)

Figure 4.3.1 shows a block-level diagram of a phase-locked system using the TX4955A

processor.

MasterClock

External Agent

TX4955A

MasterClock

SysCmd

SysAD

MasterClock

SysCmd

Figure 4.3.1 The TX4955A Processor Phase-Locked System

TMPR4955AF 데이터시트(PDF) 60 Page - Toshiba Semiconductor