 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
XRT7250 Datasheet(PDF) 247 Page - Exar Corporation |
|
|
|||||||||||||||||||||||||||||
XRT7250 Datasheet(HTML) 247 Page - Exar Corporation |
|
|
247 / 463 page  XRT7250 DS3/E3 FRAMER IC áç áç áç áç REV. 1.1.1 228 Whenever the XRT7250 Framer IC detects this inter- rupt, it will do all of the following. • It will assert the Interrupt Request Output pin (INT) by driving it "High". • It will set Bit 3 (FERF Interrupt Status), within the Rx DS3 Interrupt Status Register, to “1”, as indi- cated below. Whenever the Terminal Equipment encounters a Change in FERF Condition on Receive Interrupt, it should do the following. 1. It should determine the current state of the FERF condition. Recall, that this interrupt can gener- ated, whenever the XRT7250 Framer declares or clears the FERF condition. Hence, the user can determine the current state of the FERF condition by reading the state of Bit 5 (RxIdle), within the RxDS3 Configuration & Status Registers, as illus- trated below 4.3.6.2.6 The Change of State of Receive AIC Interrupt If the Change of State of Receive AIC Interrupt is en- abled, then the XRT7250 Framer IC will generate an interrupt, anytime the Receive DS3 Framer block has detected a change in the value of the AIC bit, within the incoming DS3 data stream. Enabling and Disabling the Change of State of Receive AIC Interrupt: The user can enable or disable the Change of State on Receive AIC Interrupt, by writing the appropriate value into Bit 2 (AIC Interrupt Enable) within the RxDS3 Interrupt Enable Register, as illustrated below. Setting this bit-field to “1” enables this interrupt. Con- versely, setting this bit-field to “0” disables this inter- rupt. Servicing the Change of State on Receive AIC In- terrupt Whenever the XRT7250 Framer IC detects this inter- rupt, it will do all of the following. • It will assert the Interrupt Request Output pin (INT) by driving it "High". • It will set Bit 3 (AIC Interrupt Status), within the Rx DS3 Interrupt Status Register, to “1”, as indicated below. RXDS3 INTERRUPT STATUS REGISTER (ADDRESS = 0X13) BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0 CP-Bit Error Interrupt Status LOS Interrupt Status AIS Interrupt Status Idle Interrupt Status FERF Interrupt Status AIC Interrupt Status OOF Interrupt Status P-Bit Error Interrupt Status RURRUR RUR RUR RURRUR RURRUR 00 001 000 RXDS3 STATUS REGISTER (ADDRESS = 0X11) BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0 Reserved RxFERF RxAIC RxFEBE[2:0] RO RO RO RO RO RO RO RO 00 000 000 RXDS3 INTERRUPT ENABLE REGISTER (ADDRESS = 0X12) BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0 CP Bit Error Interrupt Enable LOS Interrupt Enable AIS Interrupt Enable Idle Interrupt Enable FERF Interrupt Enable AIC Interrupt Enable OOF Interrupt Enable P-Bit Error Interrupt Enable R/W R/W R/W R/W R/W R/W R/W R/W 00 000 000 |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | 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
