
Philips Semiconductors
80C51 Family Derivatives
8XC552/562 overview
1996 Aug 06
25
Table 5.
Slave Receiver Mode
STATUS
STATUS OF THE
I
2
C BUS AND
APPLICATION SOFTWARE RESPONSE
CODE
TO/FROM S1DAT
TO S1CON
NEXT ACTION TAKEN BY SIO1 HARDWARE
(S1STA)
SIO1 HARDWARE
STA
STO
SI
AA
60H
Own SLA+W has
been received; ACK
has been returned
No S1DAT action or
no S1DAT action
X
X
0
0
0
0
0
1
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
68H
Arbitration lost in
SLA+R/W as master;
Own SLA+W has
been received, ACK
returned
No S1DAT action or
no S1DAT action
X
X
0
0
0
0
0
1
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
70H
General call address
(00H) has been
received; ACK has
been returned
No S1DAT action or
no S1DAT action
X
X
0
0
0
0
0
1
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
78H
Arbitration lost in
SLA+R/W as master;
General call address
has been received,
ACK has been
returned
No S1DAT action or
no S1DAT action
X
X
0
0
0
0
0
1
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
80H
Previously addressed
with own SLV
address; DATA has
been received; ACK
has been returned
Read data byte or
read data byte
X
X
0
0
0
0
0
1
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
88H
Previously addressed
with own SLA; DATA
byte has been
received; NOT ACK
has been returned
Read data byte or
read data byte or
read data byte or
read data byte
0
0
1
1
0
0
0
0
0
0
0
0
0
1
0
1
Switched to not addressed SLV mode; no
recognition of own SLA or General call address
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1
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
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1. A START condition
will be transmitted when the bus becomes free.
90H
Previously addressed
with General Call;
DATA byte has been
received; ACK has
been returned
Read data byte or
read data byte
X
X
0
0
0
0
0
1
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be returned
98H
Previously addressed
with General Call;
DATA byte has been
received; NOT ACK
has been returned
Read data byte or
read data byte or
read data byte or
read data byte
0
0
1
1
0
0
0
0
0
0
0
0
0
1
0
1
Switched to not addressed SLV mode; no
recognition of own SLA or General call address
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1
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
Switched to not addressed SLV mode; Own SLA will
be recognized; General call address will be
recognized if S1ADR.0 = logic 1. A START condition
will be transmitted when the bus becomes free.