ASRock W790 WS Software/BIOS Setup Guide - Page 33

Tcped2srx, Tcssr, Tsrx2srx, Tstab, Txsdll, Tzqoper, Txsoffset

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Intel W790 Series tCPED2SRX Configure tCPED2SRX. This is the mimimum time in SR for RDIMMs (RCD) without clock stop; the time from the SRE single CK CS# assertion to the SRX command to the RCD. tCSSR Configure tCSSR. This is the tCSL timing parameter for UDIMMs (no RCD) and the tCSSR timing parameter for RDIMMs (RCD). tSRX2SRX Configure tCPED2SRX. This is the mimimum time in SR for RDIMMs (RCD) without clock stop; the time from the SRE single CK CS# assertion to the SRX command to the RCD. tCSSR Configure tCSSR. This is the tCSL timing parameter for UDIMMs (no RCD) and the tCSSR timing parameter for RDIMMs (RCD). tSRX2SRX Configure tSRX2SRX. This is the tCSH_SRexit timing parameter for UDIMMs (no RCD) and the tSRX2SRX timing paramter for RDIMMs (RCD). tSTAB Configure tSTAB. This is the tCKACT + tSTABtiming parameter for RDIMMs (RCD); the time from the de-assertion of CS#, which starts the RCD DCK (tCKACT), plus time for the clock to stabilize, to the ealiest time that the RCD SRX command can be issued. tXSDLL Configure tXSDLL. Exit Self Refresh to commands requiring a locked DLL. tZQOPER Configure tZQOPER. Normal operation Full calibration time. tMOD Configure tMOD. Mode Register Set command update delay. tXSOFFSET Configure tXSOFFSET. Set this field to the number of 1/2 the number of Dclks to get 10ns. 29

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Intel W790 Series
tCPED2SRX
Configure tCPED2SRX. °is is the mimimum time in SR for RDIMMs (RCD) without clock
stop; the time from the SRE single CK CS# assertion to the SRX command to the RCD.
tCSSR
Configure tCSSR. °is is the tCSL timing parameter for UDIMMs (no RCD) and the tCSSR
timing parameter for RDIMMs (RCD).
tSRX2SRX
Configure tCPED2SRX. °is is the mimimum time in SR for RDIMMs (RCD) without clock
stop; the time from the SRE single CK CS# assertion to the SRX command to the RCD.
tCSSR
Configure tCSSR. °is is the tCSL timing parameter for UDIMMs (no RCD) and the tCSSR
timing parameter for RDIMMs (RCD).
tSRX2SRX
Configure tSRX2SRX. °is is the tCSH_SRexit timing parameter for UDIMMs (no RCD)
and the tSRX2SRX timing paramter for RDIMMs (RCD).
tSTAB
Configure tSTAB. °is is the tCKACT + tSTABtiming parameter for RDIMMs (RCD); the
time from the de-assertion of CS#, which starts the RCD DCK (tCKACT), plus time for the
clock to stabilize, to the ealiest time that the RCD SRX command can be issued.
tXSDLL
Configure tXSDLL. Exit Self Refresh to commands requiring a locked DLL.
tZQOPER
Configure tZQOPER. Normal operation Full calibration time.
tMOD
Configure tMOD. Mode Register Set command update delay.
tXSOFFSET
Configure tXSOFFSET. Set this field to the number of 1/2 the number of Dclks to get 10ns.