Electronic Components Datasheet Search |
|
XRT94L33 Datasheet(PDF) 7 Page - Exar Corporation |
|
XRT94L33 Datasheet(HTML) 7 Page - Exar Corporation |
7 / 110 page XRT94L33 Rev 2 22 ...0 00 ...0 00 3 33 ---C C C H H H A A AN N N N N N E E E L L L D D D S S S 3 33 ///E E E 3 33 ///S S S T T T S S S - -- 1 11 T T T O O O S S S T T T S S S - -- 3 33 ///S S S T T T M M M - -- 1 11 M M M A A AP P P P P P E E E R R R S S S O O O N N N E E E T T T A A AT T T M M M ///P P P P P P P P P – –– H H H A A AR R R W W W A A A R R R E E E M M M A A AN N N U U U A A AL L L 7 PIN # SIGNAL NAME I/O SIGNAL TYPE DESCRIPTION AG23 ALE/ AS_L I TTL Address Latch Enable/Address Strobe: The exact function of this input pin depends upon which mode the Microprocessor Interface has been configured to operate in, as described below. Intel-Asynchronous Mode - ALE If the Microprocessor Interface (of the XRT94L33) has been configured to operate in the Intel-Asynchronous Mode, then this active-high input pin is used to latch the address (present at the Microprocessor Interface Address Bus input pins (A[14:0]) into the XRT94L33 Microprocessor Interface block and to indicate the start of a READ or WRITE cycle. Pulling this input pin “high” enables the input bus drivers for the Address Bus input pins (A[14:0]). The contents of the Address Bus will be latched into the XRT94L33 Microprocessor Interface circuitry, upon the falling edge of this input signal. Motorola-Asynchronous (68K) Mode – AS* If the Microprocessor Interface has been configured to operate in the Motorola-Asynchronous Mode, then this active-low input pin is used to latch the data (residing on the Address Bus, A[14:0]) into the Microprocessor Interface circuitry of the XRT94L33. Pulling this input pin “low” enables the input bus drivers for the Address Bus input pins. The contents of the Address Bus will be latched into the Microprocessor Interface circuitry, upon the rising edge of this signal. PowerPC 403 Mode – No Function – Tie to GND: If the MIcroprocessor Interface has been configured to operate in the PowerPC 403 Mode, then this input pin has no role nor function and should be tied to GND. AE19 PCS_L I TTL Chip Select Input: The user must assert this active low signal in order to select the Microprocessor Interface for READ and WRITE operations between the Microprocessor and the XRT94L33 on-chip registers, LAPD and Trace Buffer locations. |
Similar Part No. - XRT94L33 |
|
Similar Description - XRT94L33 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |