DP83952 datasheet(71/90 Pages) NSC

71 / 90 page

80 RIC II Registers (Continued)

PORT SECURITY CONFIGURATION REGISTER (PSCR) (PAGES 4H 5H 6H 8H 9H)

This register sets up the various security modes for the RIC II It provides port specific information such as enablingdisabling

the security mode passing broadcast packets etc In addition comparison on destination address source address or both can

be selected The system can also qualify learning mode on a per port basis

Note

Bit D0 is only for the port CAMs and not for the shared CAMs

res

EDA

ESA

SAM

MCE

BCE

SME

LME

Bit

Symbol

Description

LME

LEARNING MODE

0 Disable Learn Mode for port CAMs

1 Enable Learn Mode for port CAMs

SME

SECURITY MODE

0 Disable Security Mode

1 Enable Security Mode

BCE

ACCEPT BROADCAST

Enables the repeater to passrepeat a packet with an all 1’s destination

address (Note 1)

0 Replace the broadcast packets with random packets

1 Pass broadcast packets

MCE

ACCEPT MULTICAST

Enables the repeater to passrepeat a packet with the LSB of ‘‘1’’ in the most

significant byte of the destination address (Note 2)

0 Replace the multicast packets with random packets

1 Pass multicast packets

SAM

SOURCE ADDRESS MATCHMISMATCH

0 Source address match occurred for the packet

1 Source address mismatch occurred for the packet

ESA

SOURCE ADDRESS SECURITY

0 Do not employ source address to implement security

1 Employ source address to implement security

EDA

DESTINATION ADDRESS SECURITY

0 Do not employ destination address to implement security

1 Employ destination address to implement security

res

RESERVED FOR FUTURE USE

Reads as a logic 0

Note 1

SA mismatch is still valid for broadcast packets

Note 2

SA mismatch is still valid for multicast packets

DP83952 Datasheet(PDF) 71 Page - National Semiconductor (TI)

DP83952 Datasheet(HTML) 71 Page - National Semiconductor (TI)

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

Datasheet Download

Link URL