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Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit name TX_SAPI_L_SPARE[7:0]
R/W R/W
Value 0x01
after
reset
ADDR = 0x188: Transmit SAPI LSB / Spare Byte
Bits 7-0: TX_SAPI_L_SPARE[7:0] is the LSB of the SAPI field in LAPS mode and the spare field byte in
GFP frame. In LAPS mode it is sent as part of the header unless the TX_SAPI_INH bit is set. In
GFP mode it is part of the extended header and is sent if TX_EXT_HDR_INH is not set.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit name TX_SAPI_H[7:0]
R/W R/W
Value 0xFE
after
reset
ADDR = 0x189: Transmit SAPI MSB
Bits 7-0: TX_SAPI_H[7:0] is the MSB of the SAPI field in the LAPS header. It is inhibited by the
TX_SAPI_INH bit.