VSC8504-02 datasheet(64/131 Pages) MICROSEMI

64 / 131 page

Registers

VMDS-10507 VSC8504-02 Datasheet Revision 4.2

4.2.16

Bypass Control

The bits in this register control aspects of functionality in effect when the device is disabled for the

purpose of traffic bypass. The following table shows the settings available.

Note: If bit 18.1 is set to 1 in this register, automatic exchange of next pages is disabled, and control is returned

to the user through the SMI after the base page is exchanged. The user then must send the correct

sequence of next pages to the link partner, determine the common capabilities, and force the device into

the correct configuration following the successful exchange of pages.

4:0 Reserved

Reserved

Table 34 •

Bypass Control, Address 18 (0x12)

Bit Name

Access Description

Default

Transmit disable

R/W

1: PHY transmitter disabled

4B5B encoder/decoder

R/W

1: Bypass 4B/5B encoder/decoder

Scrambler

R/W

1: Bypass scrambler

Descrambler

R/W

1: Bypass descrambler

PCS receive

R/W

1: Bypass PCS receiver

PCS transmit

R/W

1: Bypass PCS transmit

LFI timer

R/W

1: Bypass Link Fail Inhibit (LFI) timer

Reserved

HP Auto-MDIX at forced

10/100

R/W

Sticky bit.

1: Disable HP Auto-MDIX at forced 10/100

speeds

Non-compliant BCM5400

detect disable

R/W

Sticky bit.

1: Disable non-compliant BCM5400

detection

Disable pair swap correction

(HP Auto-MDIX when

autonegotiation enabled)

R/W

Sticky bit.

1: Disable the automatic pair swap

correction

Disable polarity correction

R/W

Sticky bit.

1: Disable polarity inversion correction on

each subchannel

Parallel detect control

R/W

Sticky bit.

1: Do not ignore advertised ability

0: Ignore advertised ability

Pulse shaping filter

R/W

1: Disable pulse shaping filter

Disable automatic

1000BASE-T next page

exchange

R/W

Sticky bit.

1: Disable automatic 1000BASE T next

page exchanges

Reserved

Table 33 •

1000BASE-T Status Extension 2, Address 17 (0x11) (continued)

Bit Name

Access Description

Default

VSC8504-02 датащи(PDF) 64 Page - Microsemi Corporation

VSC8504-02 датащи(HTML) 64 Page - Microsemi Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL