NXP Semiconductors PCA9665

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Product data sheet Rev. 02 — 7 December 2006 43 of 91

NXP Semiconductors PCA9665

Fm+ parallel bus to I2C-bus controller

80h Previouslyaddressed

with own slave

address;

BC[6:0] data bytes

have been received;

ACK has been

returned for all the

bytes

Read data bytes

or 0 Total number of

bytes to be

received

X X 0 X 1 Upto BC[6:0] data bytes will be received, ACK bit

will be returned for all of them.

Read data bytes 1 Total number of

bytes to be

received

X X 0 X 1 Upto BC[6:0] data bytes will be received, ACK bit

will be returned for all of them, except for the last

one where NACK bit will be returned (unless

master transmitter sends a STOP or Repeated

START condition before).

88h Previouslyaddressed

with own slave

address;

BC[6:0] data bytes

have been received;

ACK has been

returned for all the

bytes, except for the

lastone where NACK

bit has been returned

Read data bytes

or X X 0 X 0 0 1 Switched to not addressed slave mode;

No recognition of own slave address; General

Call address will be recognized if GC = 1.

Read data bytes

or X X 0 X 0 1 1 Switched to not addressed slave mode;

Own slave address will be recognized;

GeneralCall address will be recognized if GC = 1.

Read data bytes

or X X 1 X 0 0 1 Switched to not addressed slave mode;

No recognition of own slave address; General

Call address will be recognized if GC = 1;

A START condition will be transmitted when the

bus becomes free.

Read data bytes X X 1 X 0 1 1 Switched to not addressed slave mode;

Own slaveaddress will be recognized;

GeneralCall address will be recognized if GC = 1;

A START condition will be transmitted when the

bus becomes free.

E0h Previouslyaddressed

with General Call;

BC[6:0]data bytes

have been received;

ACKhas been

returned for all the

bytes

Read data bytes

or 0 Total number of

bytes to be

received

X X 0 X 1 BC[6:0] data bytes will be received, ACK bit will

be returned for all of them.

Read data bytes 1 Total number of

bytes to be

received

X X 0 X 1 BC[6:0] data bytes will be received, ACK bit will

beretur ned forall of them, except for the last one

where NACK bit will be returned (unless master

transmitter sends a STOP or Repeated START

condition before).

Table 40. Slave Receiver Buffered mode (MODE= 1)

…continued

Status

code

(I2CSTA)

Status of the

I2C-bus and the

PCA9665

Application software response Next action taken by the PCA9665

To/from I2CDAT To/from I2CCOUNT To I2CCON

LB BC[6:0] STA STO SI AA MODE