Nxp-semiconductors PCA9665 Manual do Utilizador descarregar pdf (Página 46)

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Product data sheet Rev. 02 — 7 December 2006 46 of 91

NXP Semiconductors

PCA9665

Fm+ parallel bus to I

C-bus controller

Table 41. Slave Transmitter Buffered mode (MODE = 1)

Status

code

(I2CSTA)

Status of the

C-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

A8h Own SLA+R has

been received;

ACK has been

returned

Load data bytes

X Total number of data

bytes to be transmitted

X X 0 0 1 Up to BC[6:0] bytes will be transmitted.

PCA9665 switches to the not addressed

mode after BC[6:0] bytes have been

transmitted.

Load data bytes X Total number of data

bytes to be transmitted

X X 0 1 1 Up to BC[6:0] bytes will be transmitted.

B0h Arbitration lost in

SLA+R/W as

master; Own

SLA+R has been

received, ACK has

been returned

Load data bytes

X Total number of data

bytes to be transmitted

X X 0 0 1 Up to BC[6:0] bytes will be transmitted.

PCA9665 switches to the not addressed

mode after BC[6:0] bytes have been

transmitted

Load data bytes X Total number of data

bytes to be transmitted

X X 0 1 1 Up to BC[6:0] bytes will be transmitted.

B8h BC[6:0] bytes in

I2CDAT have been

transmitted;

ACK has been

received

Load data bytes

X Total number of data

bytes to be transmitted

X X 0 0 1 Up to BC[6:0] bytes will be transmitted.

PCA9665 switches to the not addressed

mode after BC[6:0] bytes have been

transmitted

Load data bytes X Total number of data

bytes to be transmitted

X X 0 1 1 Up to BC[6:0] bytes will be transmitted.

C0h Up to BC[6:0] bytes

in I2CDAT have

been transmitted;

NACK has been

received

No I2CDAT action

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

No recognition of own slave address;

General Call address recognized if GC = 1

No I2CDAT action

X X 0 X 0 1 1 Switched to slave mode; Own slave address

will be recognized; General Call address

recognized if GC = 1

No I2CDAT action

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

No I2CDAT action X X 1 X 0 1 1 Switched to slave mode; Own slave address

will be recognized; General Call address will

be recognized if GC = 1; A START condition

will be transmitted when the bus becomes

free

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 90 91

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