Microcontrollers User manual

UM10237_2 © NXP B.V. 2008. All rights reserved.
User manual Rev. 02 — 19 December 2008 597 of 792
NXP Semiconductors
UM10237
Chapter 22: LPC24XX I
2
C interfaces I
2
C0/1/2
0x98 Previously addressed
with General Call;
DATA byte has been
received; NOT ACK
has been returned.
Read data byte or 0 0 0 0 Switched to not addressed SLV mode; no
recognition of own SLA or General call
address.
Read data byte or 0 0 0 1 Switched to not addressed SLV mode;
Own SLA will be recognized; General call
address will be recognized if
I2ADR[0] = logic 1.
Read data byte or 1 0 0 0 Switched to not addressed SLV mode; no
recognition of own SLA or General call
address. A START condition will be
transmitted when the bus becomes free.
Read data byte 1 0 0 1 Switched to not addressed SLV mode;
Own SLA will be recognized; General call
address will be recognized if
I2ADR[0] = logic 1. A START condition
will be transmitted when the bus becomes
free.
0xA0 A STOP condition or
repeated START
condition has been
received while still
addressed as
SLV/REC or
SLV/TRX.
No STDAT action
or
0 0 0 0 Switched to not addressed SLV mode; no
recognition of own SLA or General call
address.
No STDAT action
or
0 0 0 1 Switched to not addressed SLV mode;
Own SLA will be recognized; General call
address will be recognized if
I2ADR[0] = logic 1.
No STDAT action
or
1 0 0 0 Switched to not addressed SLV mode; no
recognition of own SLA or General call
address. A START condition will be
transmitted when the bus becomes free.
No STDAT action 1 0 0 1 Switched to not addressed SLV mode;
Own SLA will be recognized; General call
address will be recognized if
I2ADR[0] = logic 1. A START condition
will be transmitted when the bus becomes
free.
Table 527. Slave Receiver Mode
Status
Code
(I2CSTAT)
Status of the I
2
C bus
and hardware
Application software response Next action taken by I
2
C hardware
To/From I2DAT To I2CON
STA STO SI AA