Specifications

AN93
Rev. 0.8 151
19 B1 received first flag
Beginning of Packet
19 B0 A spurious byte received with > 6 mark bits in a row,
the modem is looking for HDLC flags
19 B2 HDLC flag detected
Beginning of Packet
30 93
19 B1
Good Packet
Beginning of Packet
19 B2 If a 1 bit error is received in an HDLC flag, the modem
assumes a new single-byte packet. Since a 1-byte
packet is invalid, 19 B2 is generated by modem.
Beginning of Packet
30 93
19 B1
Good Packet
Beginning of Packet
19 B2 A 1-bit error is received in an HDLC flag, the modem
assumes a new single-byte packet. Since a 1-byte
packet is invalid, 19 B2 is generated by modem.
Beginning of Packet
30 93
19 B1
Good Packet
Beginning of Packet
19 B2 A 1-bit error is received in an HDLC flag, the modem
assumes a new single-byte packet. Since a 1-byte
packet is invalid, 19 B2 is generated by modem.
Beginning of Packet
30 93
19 B1
Good Packet
Beginning of Packet
19 B2 A 1-bit error received in an HDLC flag, the modem
assumes a new single-byte packet. Since a 1-byte
packet is invalid, 19 B2 is generated by modem.
Beginning of Packet
Table 100. Bit Errors
Data Meaning