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SAB82525N Datasheet(PDF) 82 Page - Siemens Semiconductor Group |
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SAB82525N Datasheet(HTML) 82 Page - Siemens Semiconductor Group |
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82 / 126 page  Semiconductor Group 82 SAB 82525 SAB 82526 SAF 82525 SAF 82526 Interrupt Status Register (READ) ISTA (20/60) RME RPF RSC XPR TIN ICA EXA EXB 7 0 Value after RESET: 00H RME. . .Receive Message End One message up to 32 bytes or the last part of a message greater then 32 bytes has been received and is now available in the RFIFO. The message is complete! The actual message length can be determined reading the RBCH, RBCL registers. Additional information is available in the RSTA register. RPF. . .Receive Pool Full A block of 32 bytes of a message is stored in the RFIFO. The message is not yet completed! Note: This interrupt is only generated in Interrupt Mode! RSC. . .Receive Status Change (significant in auto-mode only!) A status change (receiver ready/receiver not ready) of the opposite station has been detected in auto-mode. (i.e. the HSCX has received a RR/RNR supervisory frame according to the HDLC protocol.) The current status can be read from the STAR register (RRNR bit). XPR. . .Transmit Pool Ready A data block of up to 32 bytes can be written to the transmit FIFO. TIN. . .Timer Interrupt The internal timer and repeat counter has been expired. (See also description of TIMR register!) ICA … Interrupt of Channel A (Channel B only) Indicates, that an interrupt is caused by channel A and the interrupt source(s) is (are) indicated in the ISTA register of channel A (i.e. at least one bit of the ISTA register of channel A is set). |
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