Fig xxx Receiver Analog Circuit Ports 1, 2, 3 and 4 of the 4-port network are between the nodes 1, 2, 3 and 4 and the common reference node Ref, respectively. Ports 1 and 3 are the receiver analog buffer model’s input, and the waveforms at ports 2 and 4 are the differential input of the Rx algorithmic model. Furthermore, ports 1 and 2 correspond to the non-inverting signal path and ports 3 and 4 to the inverting signal path. The reference node, represented by the triangle reference symbol in the above figure is the reference node A_gnd as defined in this specification. For Rx models that have the reserved parameter Ts4file, the reserved parameter Rx_R is optional (default is open circuit). For an Rx buffer, the receiver circuit defines the analog buffer model between the buffer terminals and the high impedance input of the Rx Algorithmic model. By definition, the placement of the Ts4file information within .ami files makes the Ts4file data exclusively limited to AMI applications. If the same electrical behavior is desired for non-AMI applications of the same IBIS model (the one referencing the Algorithmic Model) the model maker can optionally provide an equivalent description using the [External Model] keyword. However, the latter is not needed if the model is intended for AMI applications only. Ts4file Parameter: No Required: Tx, Rx Direction: Descriptors: Info, Dep Type: String Format: Value, List, Corner Default: <string literal> Description: <string> This parameter provides the file reference for a 4-port Touchstone file to be used in Definition: the Analog Circuit. See the Analog Circuit definitions above for the port order associated with the Touchstone file data. Example: (Ts4file (Usage Info)(Type String)(Corner “typ.s4p” “min.s4p” “max.s4p”))
Fig xxx Receiver Analog Circuit Ports 1, 2, 3 and 4 of the 4-port network are between the nodes 1, 2, 3 and 4 and the common reference node Ref, respectively. Ports 1 and 3 are the receiver analog buffer model’s input, and the waveforms at ports 2 and 4 are the differential input of the Rx algorithmic model. Furthermore, ports 1 and 2 correspond to the non-inverting signal path and ports 3 and 4 to the inverting signal path. The reference node, represented by the triangle reference symbol in the above figure is the reference node A_gnd as defined in this specification. For Rx models that have the reserved parameter Ts4file, the reserved parameter Rx_R is optional (default is open circuit). For an Rx buffer, the receiver circuit defines the analog buffer model between the buffer terminals and the high impedance input of the Rx Algorithmic model. By definition, the placement of the Ts4file information within .ami files makes the Ts4file data exclusively limited to AMI applications. If the same electrical behavior is desired for non-AMI applications of the same IBIS model (the one referencing the Algorithmic Model) the model maker can optionally provide an equivalent description using the [External Model] keyword. However, the latter is not needed if the model is intended for AMI applications only. Parameter: Ts4file Required: No Direction: Tx, Rx Descriptors: Info, Dep Type: String Format: Value, List, Corner Default: <string literal> Description: <string> Definition: This parameter provides the file reference for a 4-port Touchstone file to be used in the Analog Circuit. See the Analog Circuit definitions above for the port order associated with the Touchstone file data. Example: (Ts4file (Usage Info)(Type String)(Corner “typ.s4p” “min.s4p” “max.s4p”))
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