AC104X-DS00-R datasheet(37/50 Pages) BOARDCOM

37 / 50 page

Preliminary Data Sheet

■ AC104X

12/11/01

B roa dcom Co rpo rat ion

Document

AC104X-DS00-405-R

Section 3: Register Descriptions

Page 29

Idle and Control Code

11111

0000

Inter-Packet Idle; used as inter-stream fill code.

11000

0101

Start of stream delimiter, part 1 of 2; always use in pair

with K symbol.

10001

0101

Start of stream delimiter, part 2 of 2; always use in pair

with J symbol.

01101

Undefined

End of stream delimiter, part 1 of 2; always use in pair

with R symbol.

00111

Undefined

End of stream delimiter, part 2 of 2; always use in pair

with T symbol.

Invalid Code

00100

Undefined

Transmit Error; used to send HALT code group

00000

Undefined

Invalid code

00001

Undefined

Invalid code

00010

Undefined

Invalid code

00011

Undefined

Invalid code

00101

Undefined

Invalid code

00110

Undefined

Invalid code

01000

Undefined

Invalid code

01100

Undefined

Invalid code

10000

Undefined

Invalid code

11001

Undefined

Invalid code

Table 33:

SMI Read/Write Sequence

Pream

(32 bits)

Start

(2 bits)

OpCode

(2 bits)

PHYAD

(5 bits)

REGAD

(5 bits)

TurnAround

(2 bits)

Data

(16 bits)

Idle

Read

1…1

AAAAA

RRRRR

D…D

Write

1…1

AAAAA

RRRRR

D…D

Table 32:

4B/5B Code-Group Table (Cont.)

PCS Code Group[4:0]

Symbol Name

MII (TXD/RXD [3:0])

Description

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