NJ88C33MP datasheet(7/11 Pages) MITEL

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NJ88C33

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-

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

N counter : single modulus

A/N counters : dual modulus

PORT = low

Counters off (1)

FI and RI off (2)

PD = polarity negative

PD bias = 0.625mA

VD = RI/2

Doubler off

MOD = push-pull

PORT = high

Counters on

FI and RI on

PD = polarity positive

PD bias = 2.5mA

VD = RI/4

Doubler on (3)

MOD = open drain

Status Byte

Bit

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 V

DD ≤ 3.0V

NJ88C33MP Datasheet(PDF) 7 Page - Mitel Networks Corporation

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