MPC9230

MOTOROLA

3

TIMING SOLUTIONS

Table 1. Pin Configurations

Pin

I/O

Default

Type

Function

XTAL_IN, XTAL_OUT

Analog

Crystal oscillator interface

FREF_EXT

Input

0

LVCMOS

Alternative PLL reference input

Output

LVPECL

Differential clock output

TEST

Output

LVCMOS

Test and device diagnosis output

XTAL_SEL

Input

1

LVCMOS

PLL reference select input

S_LOAD

Input

0

LVCMOS

Serial configuration control input.

This input controls the loading of the configuration latches with the contents of the shift

register. The latches will be transparent when this signal is high, thus the data must

be stable on the high-to-low transition.

P_LOAD

Input

1

LVCMOS

Parallel configuration control input.

This input controls the loading of the configuration latches with the content of the

parallel inputs (M and N). The latches will be transparent when this signal is low, thus

the parallel data must be stable on the low-to-high transition of P_LOAD. P_LOAD is

state sensitive.

S_DATA

Input

0

LVCMOS

Serial configuration data input.

S_CLOCK

Input

0

LVCMOS

Serial configuration clock input.

M[0:8]

Input

1

LVCMOS

Parallel configuration for PLL feedback divider (M).

M is sampled on the low-to-high transition of P_LOAD.

N[1:0]

Input

1

LVCMOS

Parallel configuration for Post-PLL divider (N).

N is sampled on the low-to-high transition of P_LOAD.

OE

Input

1

LVCMOS

Output enable (active high)

The output enable is synchronous to the output clock to eliminate the possibility of runt

GND

Supply

Ground

Negative power supply (GND).

Supply

power supply for correct operation.

Supply

PLL positive power supply (analog power supply).

Table 2. Output Frequency Range and PLL Post-Divider N

N

Output Division

Output Frequency Range

Output Frequency Range

1

0

0

0

2

200 – 400 MHz

200 – 375 MHz

0

1

4

100 – 200 MHz

100 – 187.5 MHz

1

0

8

50 – 100 MHz

50 – 93.75 MHz

1

1

1

400 – 800 MHz

400 – 750 MHz

Table 3. Function Table

Input

0

1

XTAL_SEL

FREF_EXT

XTAL interface

OE

in the logic low state

Outputs enabled

Freescale Semiconductor, Inc.

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