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5.45 MAC Index Register (MACINDEX)

EMAC Port Registers

The MAC index register (MACINDEX) is shown in Figure 73 and described in Table 73 .

Figure 73. MAC Index Register (MACINDEX)

31 16

Reserved

R-0

15 5 4 0

Reserved MACINDEX

R-0 R/W-0

LEGEND: R/W = Read/Write; R = Read only; - n = value after reset

Table 73. MAC Index Register (MACINDEX) Field Descriptions

Bit Field Value Description

31-5 Reserved 0 Reserved

4-0 MACINDEX MAC address index. The host must write the index into the RX ADDR RAM in the MACINDEX field,

followed by the upper 32-bits of address, followed by the lower 16-bits of address (with control bits).

The 53-bit indexed ram location is written when the low location is written. All 32 address RAM

locations must be initialized prior to enabling packet reception.

SPRU975B – August 2006 Ethernet Media Access Controller (EMAC)/Management Data Input/Output (MDIO) 131

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Texas-instruments TMS320C645x DSP Manuel d'utilisateur Page 131