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Henry, It means c), disabling the Tx driver. It is not allowed to drive to a 1 or 0 state. This is to prevent biases when turning back on; there are also restrictions on common mode voltages that must be observed. John -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Monday, September 20, 2004 6:22 PM To: [EMAIL PROTECTED] Subject: [t13] "Quiescent" bus This message is from the T13 list server. To T13, What is meant by "the bus in a quiescent" state. There are several references (in both T13 & SerialATA drafts) that mention (the bus) "quiescent". Does this refer to: a) holding the differential outputs static (i.e. logical equiv of a 1 or 0 differentially)? b) driving the bus to DC Idle c) disabling the Tx driver or ??? Any info/explaination of what this is would be greatly appreciated! Thanks!! Regards, Henry
