MPC9608

TIMING SOLUTIONS

3

TABLE 1. PIN CONFIGURATION

Pin

I/O

Type

Function

CCLK

Input

LVCMOS

PLL reference clock signal

FB_IN

Input

LVCMOS

PLL feedback signal input, connect to a QFB output

F_RANGE[0:1]

Input

LVCMOS

PLL frequency range select

BSEL

Input

LVCMOS

Frequency divider select for bank B outputs

PLL_EN

Input

LVCMOS

PLL enable/disable

OE

Input

LVCMOS

Output enable/disable (high-impedance tristate)

CLK_STOP

Input

LVCMOS

Synchronous clock enable/stop

QA0-4, QB0-4

Output

LVCMOS

Clock outputs

QFB

Output

LVCMOS

PLL feedback signal output. Connect to FB_IN

GND

Supply

Ground

Negative power supply

VCCA

Supply

VCC

PLL positive power supply (analog power supply). The MPC9608 requires an external RC filter for

VCC

Supply

VCC

Positive power supply for I/O and core

TABLE 2. FUNCTION TABLE

Control

Default

0

1

F_RANGE[0:1]

00

PLL frequency range. Refer to Table 3 “Clock frequency configuration for QFB connected to FB_IN”

BSEL

0

CLK_STOP

0

Outputs enabled

Outputs synchronously stopped in logic low state

OE

0

Outputs enabled (active)

Outputs disabled (high-impedance state), independent on

CLK_STOP. Applying OE = 1 and PLL_EN = 1 resets the device. The

PLL feedback output QFB is not affected by OE.

PLL_EN

0

Normal operation mode with PLL enabled.

Test mode with PLL disabled. CCLK is substituted for the internal

VCO output. MPC9608 is fully static and no minimum frequency limit

applies. All PLL related AC characteristics are not applicable.

Applying OE

= 1 and PLL_EN = 1 resets the device.

TABLE 3. Clock Frequency Configuration for QFB connected to FB_IN

F_RANGE[0]

F_RANGE[1]

BSEL

range [MHz]

QA0-QA4

QB0-B4

QFB

Ratio

Ratio

0

0

0

100.0 – 200.0

100.0 – 200.0

100.0 – 200.0

00

1

50.0 – 25.0

0

1

0

50.0 – 100.0

50.0 – 100.0

50.0 – 100.0

01

1

25.0 – 50.0

1

0

0

25.0 – 50.0

25.0 – 50.0

25.0 – 50.0

10

1

12.5 – 25.0

1

1

0

12.5 – 25.0

12.5 – 25

12.5 – 25.0

11

1

6.25 – 12.5

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com