Nxp-semiconductors PCA9665 Manual do Utilizador descarregar pdf (Página 21)

Product data sheet Rev. 02 — 7 December 2006 21 of 91

NXP Semiconductors

PCA9665

Fm+ parallel bus to I

C-bus controller

30h Data byte in I2CDAT

has been transmitted;

NACK has been

received

Load data byte or 0 0 0 X 0 Data byte will be transmitted;

ACK/NACK will be received

no I2CDAT action

1 0 0 X 0 Repeated START will be transmitted;

no I2CDAT action

0 1 0 X 0 STOP condition will be transmitted;

STO ﬂag will be reset

no I2CDAT action 1 1 0 X 0 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

00000 I

C-bus will be released;

PCA9665 will enter Slave mode.

No I2CDAT

action or

00010 I

C-bus will be released;

PCA9665 will enter the Slave mode.

No I2CDAT

action

1 0 0 X 0 A START condition will be

transmitted when the bus becomes

free

Table 27. Master Transmitter Byte mode (MODE = 0)

…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 I2CCON

STA STO SI AA MODE

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 90 91

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