MIC2358_11 Datasheet, PDF (24/29 Pages) Micrel Semiconductor – IEEE 802.3af Octal Power Sourcing Equipment Controller

Micrel, Inc.
Global SMBus_Status Register
SMBus Address: 0x43
Read and Write
Bit 7
Bit 6
Bit 5
–
–
–
Bit 4
–
Bit 3
–
MIC2358YLQ
Bit 2
–
Bit 1
–
Bit 0
enable_SMBINT
Name
enable_smbint
Default
1
Description
Cleared once the device has won SMBus INT Response Address arbitration.
Must be set with SMBus commands to restore the /SMBINT functionality.
Global SRQ Register
SMBus Address: 0x44
Read Only
Bit 7
Bit 6
port_8
port_7
Bit 5
port_6
Bit 4
port_5
Bit 3
port_4
Bit 2
port_3
Bit 1
port_2
Bit 0
port_1
Name
Description
port_8
Set when an unmasked event is set in the PORT_EVENT register for Port 8.
port_7
Set when an unmasked event is set in the PORT_EVENT register for Port 7.
port_6
Set when an unmasked event is set in the PORT_EVENT register for Port 6.
port_5
Set when an unmasked event is set in the PORT_EVENT register for Port 5.
port_4
Set when an unmasked event is set in the PORT_EVENT register for Port 4.
port_3
Set when an unmasked event is set in the PORT_EVENT register for Port 3.
port_2
Set when an unmasked event is set in the PORT_EVENT register for Port 2.
port_1
Set when an unmasked event is set in the PORT_EVENT register for Port 1.
Note:
1. Global SRQ register provides the host a quick starting point to determine which port is reporting occurrence of an event, if any. During service of
/SMBINT or polling, the host can read the global SRQ register first to determine which port had the event, then read that port's EVENT register to
determine which specific event occurred.
July 2010
24
M9999-070810