NXP Semiconductors PCA9665 - Manual (Page 46)

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PCA9665_2
© NXP B
.V
. 2006. All r
ights reser
v ed.
Pr
oduct data sheet
Re
v
. 02 — 7 December 2006
46 of 91
NXP Semiconductor
s
PCA9665
Fm+ parallel b
us to I
2 C-b
us contr
oller
Table 41. Slave Transmitter Buffered mode (MODE = 1)
Status
code
(I2CSTA) Status of the
I
2 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
or 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
or 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
or 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
or 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
or 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
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
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