cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 101
cx82100
Manufacturer Part Number
cx82100
Description
Home Network Processor Hnp
Manufacturer
Conexant Systems, Inc.
Datasheet
1.CX82100.pdf
(226 pages)
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7.2
101306C
Parameterized Values Used in Implementation
Conexant Proprietary and Confidential Information
Table 7-1 shows the values of the standard parameters used in the EMAC
implementation. These parameters are defined in sections 4.4.2.1 of Reference [4] and
4.4.2.3 of Reference [5]. The value specified for the Interframe Gap (IFG) parameter
determines the speed of the Ethernet. It is defined to be 96 µs for 1 Mb/s implementation,
9.6 µs for 10 Mb/s implementation, and 0.96 µs for 100 Mb/s implementation. Only the
10 Mb/s and 100 Mb/s implementations are supported in the HNP. The IFG parameter is
programmable through the Ethernet Network Access Register (bits 17:16 of E_NA_1 and
E_NA_2 for EMAC1 and EMAC2, respectively).
Table 7-1. Parameterized Values Implemented in EMAC
SlotTime
IFG (Interframe Gap)
AttemptLimit
BackoffLimit
JamSize
MaxFrameSize
MinFrameSize
AddressSize
CX82100 Home Network Processor Data Sheet
Parameter
512 bit times
programmable
16
10
32 bits
1518 bytes
512 bits (64 bytes)
48 bits
Values
7-3
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