PPC440GX-3RF800C datasheet(57/93 Pages) AMCC

57 / 93 page

440GX – Power PC 440GX Embedded Processor

AMCC

Revision 1.15 – August 30, 2007

Data Sheet

Trace Interface

TrcBS0:2

Trace branch execution status.

I/O

3.3V LVTTL

TrcClk

Trace data capture clock, runs at 1/4 the frequency of the

processor.

3.3V LVTTL

TrcES0:4

Trace Execution Status is presented every fourth processor clock

cycle.

I/O

3.3V LVTTL

TrcTS0:5

(multiplexed with GPIO signals)

Additional information on trace execution and branch status.

Note:The trace signals, TrcTS0:6, are duplicated on two sets of

chip balls and are multiplexed with other signals in both

cases. This allows users to choose which set of

multiplexed signals they wish to use along with the

TrcTS0:6 signals. The trace signals in this set are primary

signals.

I/O

3.3V tolerant

2.5V CMOS

TrcTS1:5

(multiplexed with EBC signals)

Additional information on trace execution and branch status.

Note:The trace signals in this set are secondary signals.

I/O

3.3V LVTTL

TrcTS6

(multiplexed with EBC and

Ethernet signals)

Additional information on trace execution and branch status.

Note:This trace signal is the primary signal.

I/O

3.3V LVTTL

Power Pins

AGND

PLL (analog) voltage ground.

GND

Ground.

AxVDD

1.5V—Filtered voltages input for PLLs (analog circuits)

Note: A separate filter for each of the three voltages is

recommended.

OVDD

3.3V supply—I/O (except DDR SDRAM, Ethernet)

SVDD

2.5V supply—DDR SDRAM, Ethernet

VDD

1.5V supply—Logic voltage.

Signal Functional Description (Sheet 8 of 8)

Notes:

1. Receiver input has hysteresis

2. Must pull up (recommended value is 3k

Ω to 3.3V)

3. Must pull down (recommended value is 1k

Ω)

4. If not used, must pull up (recommended value is 3k

Ω to 3.3V)

5. If not used, must pull down (recommended value is 1k

Ω)

6. Strapping input during reset; pull-up or pull-down required

Signal Name

Description

I/O

Type

Notes

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