NJ88C33MAMP 데이터 시트보기 (PDF) - Mitel Networks

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NJ88C33MAMP

Frequency Synthesiser (I2C BUS Programmable)

Mitel Networks 

Address and Sub-Address Formats

The correct addressing sequence for the NJ88C33 is

shown below. The START condition is followed by the

address byte, the acknowledge from the NJ88C33, the sub-

NJ88C33

address byte, another acknowledge then the associated data.

The correct values for each address and sub-address are

listed, together with the message selection options.

S = Start

St = Stop

A = Acknowledge

P = Programmable (as shown)

x = Don't care

Data Formats

Each of the data formats should be preceded contiguously

by the addressing sequence given above.

R counter : single or dual modulus

Status : single or dual modulus

Status Byte

Bit

0

1

1 PORT = low

PORT = high

2

Counters off (1)

Counters on

3

FI and RI off (2)

FI and RI on

4

PD = polarity negative PD = polarity positive

5

PD bias = 0.625mA

PD bias = 2.5mA

6

fVD = RI/2

7 Doubler off

fVD = RI/4

Doubler on (3)

8 MOD = push-pull

MOD = open drain

N counter : single modulus

NOTES

1. In this standby mode the counters are disabled but the

voltage doubler and I2C interface can both function.

2. In this standby mode the FI and RI preamplifiers are

disabled, which stops the counters and the voltage doubler.

The I2C interface still operates.

3. The voltage doubler should only be used when VDD ≤ 3.0V

A/N counters : dual modulus

7

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