MPC755 datasheet(28/56 Pages) MOTOROLA

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MPC755 RISC Microprocessor Hardware Specifications, Rev. 6.1

Freescale Semiconductor

Pinout Listings

Table 15 provides the pinout listing for the MPC755, 360 PBGA and CBGA packages.

VOLTDET

High

Output

—

Notes:

1. OVDD supplies power to the processor bus, JTAG, and all control signals; and VDD supplies power to the processor core and the PLL (after

filtering to become AVDD). These columns serve as a reference for the nominal voltage supported on a given signal as selected by the BVSEL

pin configuration of Table 2 and the voltage supplied. For actual recommended value of Vin or supply voltages, see Table 3.

2. These are test signals for factory use only and must be pulled up to OVDD for normal machine operation.

3. This pin must be pulled up to OVDD for proper operation of the processor interface. To allow for future I/O voltage changes, provide the option

to connect BVSEL independently to either OVDD or GND.

4. Uses 1 of 15 existing no connects in the MPC740, 255 BGA package.

5. Internal pull-up on die.

6. Internally tied to GND in the MPC745, 255 BGA package to indicate to the power supply that a low-voltage processor is present. This signal

is not a power supply input.

Caution: This differs from the MPC755, 360 BGA package.

Table 15. Pinout Listing for the MPC755, 360 BGA Package

Signal Name

Pin Number

Active

I/O

I/F Voltage 1

Notes

A[0:31]

A13, D2, H11, C1, B13, F2, C13, E5, D13, G7, F12, G3,

G6, H2, E2, L3, G5, L4, G4, J4, H7, E1, G2, F3, J7, M3,

H3, J2, J6, K3, K2, L2

High

I/O

OVDD

AACK

Low

Input

OVDD

ABB

Low

I/O

OVDD

AP[0:3]

C4, C5, C6, C7

High

I/O

OVDD

ARTRY

Low

I/O

OVDD

AVDD

—

2.0 V

Low

Input

OVDD

Low

Output

OVDD

BVSEL

High

Input

OVDD

3, 5, 6

Low

Output

OVDD

CKSTP_IN

Low

Input

OVDD

CKSTP_OUT

Low

Output

OVDD

CLK_OUT

—

Output

OVDD

DBB

Low

I/O

OVDD

DBDIS

Low

Input

OVDD

DBG

Low

Input

OVDD

DBWO

Low

Input

OVDD

Table 14. Pinout Listing for the MPC745, 255 PBGA Package (continued)

Signal Name

Pin Number

Active

I/O

I/F Voltage 1

Notes

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