SC9-TOCCATA • CompactPCI® Serial CPU Board • 11th Generation Intel® Processors
Local SMB/I
2
C Devices
The SC9-TOCCATA contains devices that are attached to the System Management Bus (SMBus).
These are the SPD EEPROMs for the on-board memory or the possibly plugged SODIMM, a general
purpose serial EEPROM containing board configuration data, the supply voltage/temperature
monitoring device NCT7491, a counter for operating hours and reset events, a set of board
control and status registers as well as two dual general purpose, non-volatile electronic jumpers.
Additional devices may be connected to the different I
2
C controllers of the RM590E via the
CompactPCI® Serial backplane signals I
2
C_SCL (P1 B2) and I
2
C_SDA (P1 C2) or the mezzanine
expansion connectors HSE2 or N-EXP.
Controller
Address
Description
SMBus
0x23
Non-volatile Electronic Jumpers 3/4
SMBus
0x2C
Hardware Monitor/Memory Down Temperature Sensor (NCT7491)
SMBus
0x2E
Board Control/Status
SMBus
0x2F
Non-volatile Electronic Jumpers 1/2
SMBus
0x50
0x30
SPD EEPROM of On-board Memory 4KBit
EEPROM Select Bank 0/1
SMBus
0x52
0x32
SPD EEPROM of SODIMM 4KBit
EEPROM Select Bank 0/1
SMBus
0x57
General Purpose EEPROM 2KBit
SMBus
0x6B
operating hours/reset counters (DS1683)
I2C[0]
1)
P-HSE2 (Pins A22/A23), N-EXP (Pins 29/30)
I2C[1]
1)
Serial Backplane Connector P1 (Pins B2/C2)
1)
Address depends on devices attached
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