 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
XRT86SH328IB Datasheet(PDF) 10 Page - Exar Corporation |
|
||||||||||||||||||||||||||||||
XRT86SH328IB Datasheet(HTML) 10 Page - Exar Corporation |
|
|
10 / 96 page  XRT86SH328 Datasheet XRT86SH328 PIN DESCRIPTIONS Datasheet 7 P1.0.1, September 1, 2005 R26 RDY/ DTACK/ RDY O READY or DTACK Output: The function of this input pin depends upon which mode the Microprocessor Interface has been configured to operate in. Intel-Asynchronous Mode - RDY* - Ready Output: If the Microprocessor Interface has been configured to operate in the Intel- Asynchronous Mode, then this output pin will function as the active-low READY output.During a READ or WRITE cycle, the Microprocessor Interface block will toggle this output pin to the logic low level, ONLY when it (the Microprocessor Interface) is ready to complete or terminate the current READ or WRITE cycle. Once the Microprocessor has determined that this input pin has toggled to the logic "Low" level, then it is now safe for it to move on and execute the next READ or WRITE cycle. If (during a READ or WRITE cycle) the Microprocessor Interface block is holding this output pin at a logic "High" level, then the Microprocessor is expected to extend this READ or WRITE cycle, until it detects this output pin being toggled to the logic low level. Motorola-Asynchronous Mode - DTACK* - Data Transfer Acknowledge Output If the Microprocessor Interface has been configured to operate in the Motorola- Asynchronous Mode, then this output pin will function as the active-low DTACK output.During a READ or WRITE cycle, the Microprocessor Interface block will toggle this output pin to the logic low level, ONLY when it (the Microprocessor Interface) is ready to complete or terminate the current READ or WRITE cycle. Once the Microprocessor has determined that this input pin has toggled to the logic "Low" level, then it is now safe for it to move on and execute the next READ or WRITE cycle. If (during a READ or WRITE cycle) the Microprocessor Interface block is holding this output pin at a logic "High" level, then the Microprocessor is expected to extend this READ or WRITE cycle, until it detects this output pin being toggled to the logic low level. Power PC 403 Mode - RDY - Ready Output: If the Microprocessor Interface has been configured to operate in the Power PC 403 Mode, then this output pin will function as the active-high READY output.During a READ or WRITE cycle, the Microprocessor Interface block will toggle this output pin to the logic high level, ONLY when it (the Microprocessor Interface) is ready to complete or terminate the current READ or WRITE cycle. Once the Microprocessor has sampled this signal being at the logic "High" level (upon the rising edge of PCLK), then it is now safe for it to move on and execute the next READ or WRITE cycle. If (during a READ or WRITE cycle) the Microprocessor Interface block is holding this output pin at a logic "Low" level, then the Microprocessor is expected to extend this READ or WRITE cycle, until it samples this output pin being at the logic low level. Note: The Microprocessor Interface will update the state of this output pin upon the rising edge of µPCLK. P1 RESET I Hardware Reset Input: When this active-low signal is asserted, the XRT79L71 device will be asynchronously reset. When this occurs, all outputs will be tri-stated and all on-chip registers will be reset to their default values. Table 2 Microprocessor Interface - Pin Descriptions Pin/Ball Number Pin Name Type Description |
Similar Part No. - XRT86SH328IB |
|
Similar Description - XRT86SH328IB |
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
