mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 787

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

IAM—Individual Address Mode
CRC—CRC Selection
PRO—Promiscuous
BRO—Broadcast Address
SBT—Stop Backoff Timer
LPB—Loopback Operation
Bit 10—Reserved
This bit is reserved and must be set to 0.
LCW—Late Collision Window
0 = Normal operation. A single 48-bit physical address that is stored in PADDR1_x is
1 = The individual hash table is used to check all individual addresses that are
00 = Reserved.
01 = Reserved.
10 = 32-bit CCITT-CRC (Ethernet). X32 + X26 + X23 + X22 + X16 + X12 + X11 + X10
11 = Reserved.
0 = Check the destination address of the incoming frames.
1 = Receive the frame regardless of its address.
0 = Receive all frames containing the broadcast address.
1 = Reject all frames containing the broadcast address, unless the PRO bit = 1.
0 = The backoff timer is functioning normally.
1 = The backoff timer for the random wait after a collision is stopped when carrier
0 = Normal operation.
1 = The channel is configured into internal or external loopback operation as
0 = A late collision is any collision that occurs at least 64 bytes from the preamble.
1 = A late collision is any collision that occurs at least 56 bytes from the preamble.
checked when it is received.
received.
sense is active. This method makes the retransmission less aggressive than the
maximum allowed in the IEEE 802.3 standard. The persistence (P_Per) parameter
in the parameter RAM can be used in combination with, or in place of, the SBT bit.
determined by the DIAG field of the GSMR_L. For external loopback, the DIAG
field must be configured for normal operation and for internal loopback they must
be configured for loopback operation.
+ X8 + X7 + X5 + X4 + X2 + X1 +1. Select this to comply with Ethernet
specifications.
Freescale Semiconductor, Inc.
For More Information On This Product,
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
Communication Processor Module
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