MAX16067 Datasheet, PDF (36/47 Pages) Maxim Integrated Products – 6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

6-Channel, Flash-Configurable System Manager
with Nonvolatile Fault Registers
SEND BYTE FORMAT
RECEIVE BYTE FORMAT
S ADDRESS R/W ACK COMMAND ACK P
S ADDRESS R/W ACK DATA NACK P
7 BITS
00
8 BITS
0
SLAVE ADDRESS: Address DATA BYTE: Presets the internal
of the slave on the serial address pointer or represents
interface bus.
a command.
7 BITS
10
8 BITS 1
SLAVE ADDRESS: Address DATA BYTE: Data is read from
of the slave on the serial the location pointed to by the
interface bus.
internal address pointer.
WRITE BYTE FORMAT
S ADDRESS R/W ACK COMMAND ACK
DATA ACK P
SMBALERT#
S ADDRESS R/W ACK
DATA NACK P
7 BITS
00
8 BITS
0
8 BITS
0
0001100 D.C. 0
8 BITS 1
SLAVE ADDRESS: Address
of the slave on the serial
interface bus.
READ BYTE FORMAT
COMMAND BYTE:
Sets the internal
address pointer.
DATA BYTE: Data is written to
the locations set by the
internal address pointer.
S
SLAVE
ADDRESS
R/W ACK COMMAND ACK SR
SLAVE
ADDRESS
R/W ACK
7 BITS
00
8 BITS
0
7 BITS
10
ALERT RESPONSE ADDRESS:
Only the device that
interrupted the master
responds to this address.
SLAVE ADDRESS: Slave places
its own address on the
serial bus.
DATA BYTE NACK P
8 BITS
1
SLAVE ADDRESS: Address COMMAND BYTE:
of the slave on the serial Sets the internal
interface bus.
address pointer.
DATA BYTE: Data is written to
the locations set by the
internal address pointer.
BLOCK WRITE FORMAT
S
ADDRESS
R/W ACK
COMMAND
ACK
BYTE
COUNT = N
ACK DATA BYTE 1 ACK DATA BYTE … ACK DATA BYTE N ACK
P
7 BITS
00
8 BITS
0
8 BITS
0 8 BITS
0
8 BITS 0 8 BITS
0
SLAVE ADDRESS: Address COMMAND BYTE:
of the slave on the
FAh
serial interface bus.
DATA BYTE: Data is written to the locations
set by the internal address pointer.
SLAVE TO MASTER
MASTER TO SLAVE
BLOCK READ FORMAT
S ADDRESS R/W ACK COMMAND ACK SR
7 BITS
00
8 BITS 0
ADDRESS
7 BITS
R/W ACK
BYTE
COUNT = N
ACK DATA BYTE N ACK DATA BYTE … ACK DATA BYTE N NACK
P
1 0 8 BITS
0 8 BITS
0
8 BITS 0 8 BITS
1
SLAVE ADDRESS: Address COMMAND BYTE:
of the slave on the
FBh
serial interface bus.
SLAVE ADDRESS: Address DATA BYTE: Data is read from the locations
of the slave on the
set by the internal address pointer.
serial interface bus.
WRITE BYTE FORMAT WITH PEC
S ADDRESS R/W ACK COMMAND ACK DATA
ACK
PEC ACK P
7 BITS 0 0
8 BITS
0
8 BITS
0
8 BITS 0
READ BYTE FORMAT WITH PEC
S ADDRESS R/W ACK COMMAND ACK SR ADDRESS R/W ACK
7 BITS
00
8 BITS
0
7 BITS
10
DATA
8 BITS
ACK PEC NACK P
0
8 BITS
1
BLOCK WRITE WITH PEC
S ADDRESS R/W ACK COMMAND ACK BYTE COUNT N ACK DATA BYTE 1 ACK DATA BYTE ACK DATA N
7 BITS
00
8 BITS
0
8 BITS
0
8 BITS 0
8 BITS
0 8 BITS
ACK PEC
0
8 BITS
ACK P
0
BLOCK READ WITH PEC
S ADDRESS R/W ACK COMMAND ACK SR ADDRESS R/W ACK BYTE COUNT N ACK DATA BYTE 1 ACK DATA BYTE ACK DATA N ACK PEC
7 BITS
0 0 8 BITS
0
7 BITS 1 0
8 BITS
0
8 BITS
0
8 BITS
0
8 BITS
0 8 BITS
NACK P
1
S = START CONDITION
P = STOP CONDITION
Sr = REPEATED START CONDITION
D.C. = DON’T CARE
ACK = ACKNOWLEDGE, SDA PULLED LOW DURING RISING EDGE OF SCL.
NACK = NOT ACKNOWLEDGE, SDA LEFT HIGH DURING RISING EDGE OF SCL.
ALL DATA IS CLOCKED IN/OUT OF THE DEVICE ON RISING EDGES OF SCL.
= SDA TRANSITIONS FROM HIGH TO LOW DURING PERIOD OF SCL.
= SDA TRANSITIONS FROM LOW TO HIGH DURING PERIOD OF SCL.
Figure 12. SMBus Protocols
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