MAX7358 Maxim, MAX7358 Datasheet - Page 20

• Manufacturer Part Number: MAX7358
• Description: The MAX7356/MAX7357/MAX7358 8-channel I²C switches/multiplexers expand the main I²C bus to any combination of 8 extended I²C buses
• Manufacturer: Maxim

1-to-8 I
Lock-Up Detection, Isolation, and Notification
A read from the MAX7357 or MAX7358 in basic mode
starts with the master transmitting the slave address
with the R/W bit set high. The device acknowledges the
slave address. The master can read 1 byte from the
switch control register and then issue a STOP condition
(Figure 19). If the master reads more than one byte, the
master upon reception acknowledges each byte. All
bytes return the contents of the switch control register.
Figure 17. Reading the MAX7356
Figure 18. Reading the MAX7357 or MAX7358 in Enhanced Mode
Figure 19. Reading the MAX7357 or MAX7358 in Basic Mode
20
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S
Reading from the MAX7357/MAX7358
S
S
START
START
START
ADDRESS OF MUX/SWT PART
ADDRESS OF MUX/SWT PART
ADDRESS OF MUX/SWT PART
2
ACKNOWLEDGE FROM THE
C Bus Switches/Multiplexers with Bus
ACKNOWLEDGE FROM THE
ACKNOWLEDGE FROM THE
MAX7357 OR MAX7358
MAX7357 OR MAX7358
MAX7357 OR MAX7358
R/W
R/W
R/W
1
1
0
A
in Basic Mode
A
A
D7 D6
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
ACKNOWLEDGE
DATA BYTE FROM THE SWITCH
FROM A HOST
DATA BYTE FROM THE SWITCH
DATA BYTE TO THE SWITCH
CONTROL REGISTER
CONTROL REGISTER
CONTROL REGISTER
ACKNOWLEDGE FROM THE
ACKNOWLEDGE FROM A
D1 D0
MAX7357 OR MAX7358
The pass gates of the MAX7356/MAX7357/MAX7358
are designed so V
levels transferred from one bus to another. The power-
supply voltage of the part should be selected to be no
larger than one VGS
bus voltage in the system. This ensures that the analog
switches do not allow current to flow from higher volt-
age buses to lower voltage buses.
PROCESS: CMOS
A
DATA BYTE FROM
HOST
0X01 TO 0X06
REGISTERS
A
A
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Applications Information
D7 D6 D5 D4 D3 D2 D1 D0
DATA BYTE FROM THE SWITCH
DD
DATA BYTE TO THE SWITCH
STUCK HIGH FAULT REGISTER
CONTROL REGISTER
CONTROL REGISTER
ON
DATA BYTE FROM THE
Voltage Level Translation
can be used to limit the voltage
ACKNOWLEDGE FROM THE
ACKNOWLEDGE FROM A
(0.7V, typ) above the lowest
MAX7357 OR MAX7358
ACKNOWLEDGE FROM A
Chip Information
HOST
HOST
STOP
STOP
A
A
STOP
A
P
P
P