Refer to the PDF data sheet for device specific package drawings
For each XINTF access, the number of lead, active, and trail cycles is based on the internal clock XTIMCLK. Strobes such as XRD, XWE0, XWE1, and zone chip-select (XZCS) change state in relationship to the rising edge of XTIMCLK. The external clock, XCLKOUT, can be configured to be either equal to or one-half the frequency of XTIMCLK.
For the case where XCLKOUT = XTIMCLK, all of the XINTF strobes will change state with respect to the rising edge of XCLKOUT. For the case where XCLKOUT = one-half XTIMCLK, some strobes will change state either on the rising edge of XCLKOUT or the falling edge of XCLKOUT. In the XINTF timing tables, the notation XCOHL is used to indicate that the parameter is with respect to either case; XCLKOUT rising edge (high) or XCLKOUT falling edge (low). If the parameter is always with respect to the rising edge of XCLKOUT, the notation XCOH is used.
For the case where XCLKOUT = one-half XTIMCLK, the XCLKOUT edge with which the change will be aligned can be determined based on the number of XTIMCLK cycles from the start of the access to the point at which the signal changes. If this number of XTIMCLK cycles is even, the alignment will be with respect to the rising edge of XCLKOUT. If this number is odd, then the signal will change with respect to the falling edge of XCLKOUT. Examples include the following:
|Examples:||XZCSL||Zone chip-select active low|
|XRNWL||XR/W active low|
|Examples:||XRDL||XRD active low|
|XWEL||XWE1 or XWE0 active low|
|Examples:||XRDH||XRD inactive high|
|XWEH||XWE1 or XWE0 inactive high|
|Examples:||XZCSH||Zone chip-select inactive high|
|XRNWH||XR/W inactive high|