MPC2605ZP66 datasheet(17/30 Pages) MOTOROLA

Part #	MPC2605ZP66

Description	Integrated Secondary Cache for PowerPC Microprocessors

PDF	30 Pages

Scroll/Zoom	100%

Manufacturer	MOTOROLA [Motorola, Inc]

Direct Link	http://www.freescale.com

Logo

17 / 30 page

MPC2605

MOTOROLA

READ MISS (NORMAL BUS MODE)

Figure 3 is an illustration of MPC2605 pipeline depth with a

read miss followed by a read hit.

For illustration purposes the read miss is shown as a

3–1–1–1 response from memory. AACK for the second

access is not driven true until the cycle after the fourth TA of

the read miss. This is because the MPC2605 is not in control

of TA for the first access and must, therefore, wait until the

first access’ data tenure is complete before it can drive AACK

true for the read hit.

CPU BG

A0 – A31

TBST

L2 CLAIM

AACK

CPU DBG

DBB

DH0 – DH31,

DL0 – DL31

CLK

Signal driven to the MPC2605

Signal driven by the MPC2605

High–Z

LEGEND

Figure 3. Read Miss Followed by a Burst Read Hit for MPC603/604

MPC2605ZP66 Datasheet(PDF) 17 Page - Motorola, Inc