Intel N2820 FH8065301616603 Ficha De Dados
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Códigos do produto
FH8065301616603
PCU – System Management Bus (SMBus)
1116
Datasheet
23.2.5
PCU_SMB_ALERT#
PCU_SMB_ALERT# is multiplexed with GPIO_S0_SC[53]. When enabled and the signal
is asserted, the processor can generate an interrupt or an SMI#.
is asserted, the processor can generate an interrupt or an SMI#.
Note:
Using this signal as a wake event from S3–S5 is not supported.
23.2.6
SMBus CRC Generation and Checking
If the SMB_Mem_AUXC.AAC is set, the processor automatically calculates and drives
CRC at the end of the transmitted packet for write cycles, and will check the CRC for
read cycles. It will not transmit the contents of the Packet Error Check Data Register
(SMB_Mem_PEC) PEC register for CRC. The SMB_Mem_HCTL.PECEN bit must not be
set if this bit is set, or unspecified behavior will result.
CRC at the end of the transmitted packet for write cycles, and will check the CRC for
read cycles. It will not transmit the contents of the Packet Error Check Data Register
(SMB_Mem_PEC) PEC register for CRC. The SMB_Mem_HCTL.PECEN bit must not be
set if this bit is set, or unspecified behavior will result.
If the read cycle results in a CRC error, the SMB_Mem_HSTS.DEVERR bit and the
SMB_Mem_AUXS.CRCE bit will be set.
SMB_Mem_AUXS.CRCE bit will be set.
Table 166. Enable for PCU_SMB_ALERT#
Event
SMB_Mem_
HCTL.INTREN
SMB_Config_
HCFG.SMI_EN
SMB_Mem_
SCMD.SMBALTD
IS
Result
PCU_SMB_ALERT#
asserted low (always
reported in
SMB_Mem_
HSTS.SMBALERT)
X
1
0
Slave SMI#
generated
(SMBUS_SMI_STS
)
1
0
0
Interrupt
generated
Table 167. Enables for SMBus Host Events
Event
SMB_Mem_
HCTL.INTREN
SMB_Config_
HCFG.SMI_EN
Event
Any combination of
SMB_Mem_HSTS.
FAILED,
SMB_Mem_HSTS.
BERR, SMB_Mem_HSTS.
DEVERR,
SMB_Mem_HSTS.
INTR asserted
0
X
None
1
0
Interrupt generated
1
1
Host SMI# generated
Table 168. Enables for the Host Notify Command
SMB_Mem_
SCMD.HNINTREN
SMB_Config_
HCFG.SMI_EN
SMB_Mem_
SCMD.HNWAKEEN
Result
0
X
0
None
1
0
X
Interrupt generated
1
1
X
Slave SMI# generated
(SMBUS_SMI_STS)