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SAB82525H Datasheet(PDF) 98 Page - Infineon Technologies AG |
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SAB82525H Datasheet(HTML) 98 Page - Infineon Technologies AG |
98 / 126 page ![]() Semiconductor Group 98 SAB 82525 SAB 82526 SAF 82525 SAF 82526 Receive HDLC Control Register (READ) RHCR (29/69) 70 RHCR Value of the HDLC control field corresponds to the last received frame. RHCR is duplicated into RFIFO for every frame. Note: Mode Auto-mode,1-byte address (U-frames) (Note 1) Auto-mode, 2-byte address (U-frames) (Note 1) Auto-mode, 1-byte address (I-frames) (Note 1) Auto-mode, 2-byte address (I-frames) (Note 1) Modulo 8 (MCS = 0) Control field Control field Control field Control field Modulo 128 (MCS = 1) Control field (Note 2) Control field (Note 2) Control field in compressed form (Note 3) Control field in compressed form (Note 3) Contents of RHCR Non-auto mode, 1-byte address Non-auto mode, 2-byte address Transparent mode 1 Transparent mode 0 2nd byte after flag 3rd byte after flag 3rd byte after flag 2nd byte after flag S-frames are handled automatically and are not transferred to the microprocessor. Note 1: For I-frames (bit 0 of RHCR = 0) the compressed control field has the same format as in the modulo 8 case, but only the three LSB’s of the receive and transmit counters are visible: Note 3: For U-frames (bit 0 of RHCR = 1) the control field is as in the modulo 8 case. Note 2: N(R) P N(S) 0 bit 7 6 5 4 3210 |
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