Nxp-semiconductors PCA9665 Manual do Utilizador descarregar pdf (Página 35)

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Product data sheet Rev. 02 — 7 December 2006 35 of 91

NXP Semiconductors

PCA9665

Fm+ parallel bus to I

C-bus controller

28h BC[6:0] bytes in

I2CDAT have been

transmitted; ACK

has been received

for all of them

Load the data

bytes or

X Total number of data

bytes to be

transmitted

0 0 0 X 1 Up to BC[6:0] data bytes will be transmitted (until

all of them have been sent and an ACK has

been received for each of them or until a NACK

bit is received).

no I2CDAT action

X X 1 0 0 X 1 Repeated START will be transmitted.

no I2CDAT action

X X 0 1 0 X 1 STOP condition will be transmitted.

STO ﬂag will be reset.

no I2CDAT action X X 1 1 0 X 1 TOP condition followed by a START condition

will be transmitted.

STO ﬂag will be reset.

30h Up to BC[6:0] bytes

in I2CDAT have

been transmitted;

NACK has been

received for the last

byte

Load the data

bytes or

X Total number of data

bytes to be

transmitted

0 0 0 X 1 Up to BC[6:0] data bytes will be transmitted (until

all of them have been sent and an ACK has

been received for each of them or until a NACK

bit is received).

no I2CDAT action

X X 1 0 0 X 1 Repeated START will be transmitted.

no I2CDAT action

X X 0 1 0 X 1 STOP condition will be transmitted.

STO ﬂag will be reset.

no I2CDAT action X X 1 1 0 X 1 STOP condition followed by a START condition

will be transmitted.

STO ﬂag will be reset.

38h Arbitration lost in

SLA+W or

Data bytes

No I2CDAT

action or

XX 0 0 00 1 I

C-bus will be released; PCA9665 will enter the

not addressed slave mode.

No I2CDAT

action or

XX 0 0 01 1 I

C-bus will be released; PCA9665 will enter the

slave mode.

No I2CDAT

action

X X 1 0 0 X 1 A START condition will be transmitted when the

bus becomes free.

Table 35. Master Transmitter Buffered mode (MODE = 1)

…continued

Status

code

(I2CSTA)

Status of the

C-bus and the

PCA9665

Application software response Next action taken by the PCA9665

To/from I2CDAT To I2CCOUNT To I2CCON

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

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 90 91

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