MPC8270VR datasheet(60/83 Pages) FREESCALE

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MPC8280 PowerQUICC II Family Hardware Specifications, Rev. 2

Freescale Semiconductor

Pinout

This table describes symbols used in Table 23.

8.2

VR and ZQ Packages—MPC8275 and MPC8270

The following figures and table represent the alternate 516 PBGA package. For information on the

standard package for the MPC8280 and the MPC8270, see Section 8.1, “ZU and VV

Packages—MPC8280 and MPC8270.

Core power

U28, U29, K28, K29, A9, A19, B19,

M1, M2, Y1, Y2, AC1, AC2, AH19,

AJ19, AH10, AJ10, AJ5

Ground

AA5, AB16, AB27, AF21, AF14, AF8,

AE7, AF11, AE17, AE23, AC26,

AB25, Y26, V25, T26, R25, P26,

M25, K27, H25, G26, D7, D10, D14,

D16, D20, D23, C9, E11, E13, E15,

E19, E22, B3, G5, H4, K5, M3, P5,

T4, Y5, AA2, AC3

1 Should be tied to VDDH via a 2K Ω external pull-up resistor.

2 The default configuration of the CPM pins (PA[0–31], PB[4–31], PC[0–31], PD[4–31]) is input. To prevent excessive DC current,

it is recommended to either pull unused pins to GND or VDDH, or to configure them as outputs.

3 Must be pulled down or left floating.

4 If PCI is not desired, must be pulled up or left floating.

5 Sphere is not connected to die.

6 GNDSYN (AB1): This pin exists as a separate ground signal in MPC826x(A) devices; it does not exist as a separate ground

signal on the SoC. New designs must connect AB1 to GND and follow the suggestions in Section 4.6, “Layout Practices.” Old

designs in which the MPC8280 is used as a drop-in replacement can leave the pin connected to GND with the noise filtering

capacitors.

7 XFC (AB2) pin: This pin is used in MPC826x(A) devices; it is not used in MPC8280 because there is no need for external

capacitor to operate the PLL. New designs should connect AB2 (XFC) pin to GND. Old designs in which the SoC is used as a

drop-in replacement can leave the pin connected to the current capacitor.

Table 24. Symbol Legend

Symbol

Meaning

OVERBAR

Signals with overbars, such as TA, are active low.

UTM

Indicates that a signal is part of the UTOPIA master interface.

UTS

Indicates that a signal is part of the UTOPIA slave interface.

UT8

Indicates that a signal is part of the 8-bit UTOPIA interface.

UT16

Indicates that a signal is part of the 16-bit UTOPIA interface.

MII

Indicates that a signal is part of the media independent interface.

RMII

Indicates that a signal is part of the reduced media independent interface.

Table 23. MPC8280 and MPC8270 (ZU and VV Packages) Pinout List (continued)

Pin Name

Ball

MPC8280/MPC8270

MPC8280 only

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