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Avnet Qseven MSC Q7-BT - SM Bus

Avnet Qseven MSC Q7-BT
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MSC Q7-BT MSC_Q7-BT_User_Manual.pdf 44 / 113
4.17 SM Bus
WARNING! It is strongly not recommended to use the SM Bus for communication with off-module devices!
Table 4-20 SMB Signal Description
Signal
Pin Type
Signal Level
Available
Power
Tolerance
PU/PD
Description
SMB_CLK
I/O OD
3.3V CMOS
Suspend
3.3V
PU 10k 3.3V SUS
System management clock line
SMB_DAT
I/O OD
3.3V CMOS
Suspend
3.3V
PU 10k 3.3V SUS
System management data line
SMB_ALERT#
I/O OD
3.3V CMOS
Suspend
3.3V
PU 10k 3.3V SUS
System management bus alert input
The only intention of the following list is to avoid conflict with off-module devices. Customers should not attempt to access these devices directly.
Table 4-21 Onmodule SMB Addresses
7 bit / 8 bit
Address
Device
28h / 50h
DP-LVDS-Translator
46h / 8Ch
DP-LVDS-Translator
50h / A0h
SPD EEPROM for DRAM
51h / A2h
Reserved for SPD EEPROM for DRAM
54h / A8h
Backup EEPROM
55h / AAh
Backup EEPROM
60h / C0h
Embedded Controller
61h / C2h
Ethernet Controller

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