82596DX Datasheet, PDF (39/77 Pages) Intel Corporation – HIGH-PERFORMANCE 32-BIT LOCAL AREA NETWORK COPROCESSOR

7
LOOP BACK
MODE
PREAMBLE LENGTH
NO SRC
ADD INS
ADDRESS LENGTH
BYTE 3
ADR LEN (Bits 0–2)
Address length (any kind)
NO SCR ADD INS (Bit 3)
No Source Address Insertion
In the 82586 this bit is called AL LOC
PREAM LEN (Bits 4–5)
LP BCK MODE (Bits 6–7)
Preamble length
Loopback mode
DEFAULT 26h
7
BOF METD
EXPONENTIAL PRIORITY
0
BYTE 4
LIN PRIO (Bits 0–2)
Linear Priority
EXP PRIO (Bits 4–6)
Exponential Priority
BOF METD (Bit 7)
DEFAULT 00h
Exponential Backoff method
LINEAR PRIORITY
7
BYTE 5
INTERFRAME SPACING
DEFAULT 60h
INTER FRAME SPACING
Interframe spacing
7
BYTE 6
SLOT TIME (L)
DEFAULT 00h
SLOT TIME - LOW
Slot time low byte
7
MAXIMUM RETRY NUMBER
0
SLOT TIME - HIGH
BYTE 7
SLOT TIME (H)
(Bits 0–2)
RETRY NUM (Bits 4–7)
DEFAULT F2h
Slot time high part
Number of transmission retries on collision
82596DX SX
0
0
0
0
0
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