MAX7358 Maxim, MAX7358 Datasheet - Page 12

• 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
Available addresses depend on the hardware connec-
tions of pins A2, A1, and A0 as shown in Table 1.
The last bit following the slave address bit A0 on an I
command defines the operation to be performed. When
the last bit sets to logic 1, a read is selected while logic
0 selects a write operation.
Figure 7. MAX7356/MAX7357/MAX7358 Slave Address
Table 1. MAX7356/MAX7357/MAX7358 Switch Multiplexer Device Address
Table 2. MAX7357/MAX7358 Enhanced-Mode Register Map
Table 3. MAX7357 and MAX7358 Basic-
Mode Register Map
12
REGISTER
Traffic Prior to Lock-Up
CONNECTION
Flush-Out Sequence
Control
Lock-Up Indication
NAME
Switch
REGISTER NAME
Stuck High Fault
______________________________________________________________________________________
Switch Control
Configuration
GND
GND
GND
GND
V
V
V
V
A2
DD
DD
DD
DD
B7 B6 B5 B4 B3 B2 B1 B0
0
A6
2
POR DEFAULT SETTING
0
A5
FIXED
C Bus Switches/Multiplexers with Bus
CONNECTION
A4
0
GND
GND
GND
GND
A3
V
V
V
V
PIN-SELECTABLE BITS
A1
0
DD
DD
DD
DD
INTERNAL
ADDRESS
A2
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0
A1
0
A0
R/W
CONNECTION
0
B7
GND
GND
GND
GND
V
V
V
V
0
0
1
0
0
0
0
0
A0
DD
DD
DD
DD
ACCESS
B6
0
0
1
0
0
0
0
R/W
2
POR DEFAULT SETTING
C
B5
0
0
1
0
0
0
0
A6
1
1
1
1
1
1
1
1
B4
The MAX7357 and MAX7358 have 7 registers (shown in
Table 2) that can be accessed through the I
MAX7357 powers up with all of these registers accessi-
ble. The initial register address counter is at 0x00. The
MAX7358 powers up in basic mode with only the switch
control register available. Writing to a MAX7358
changes only the contents of the switch control register.
By sending a unique I
7 registers become available.
Only the MAX7356 device address is required to gain
access to its registers. A typical I
municate with the MAX7356 starts with its device
address followed directly by data bytes.
0
0
1
0
0
0
0
A5
B3
1
1
1
1
1
1
1
1
0
0
1
0
0
0
0
Register Access Protocol (MAX7356)
Register Map (MAX7357/MAX7358)
B2
0
0
1
0
0
0
0
A4
1
1
1
1
1
1
1
1
B1
0
0
1
0
0
0
0
2
C sequence to the MAX7358, all
A3
B0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
ADDRESS
0x00 (W)
0x03 (R)
A2
NEXT
0
0
0
0
1
1
1
1
0x01
0x02
0x04
0x05
0x06
0x00
2
C command to com-
A1
0
0
1
1
0
0
1
1
2
C bus. The
ACCESS
R/W
R/W
R/W
R
R
R
R
A0
0
1
0
1
0
1
0
1