Solution ID: rd06172009_579
Last Modified: Jun 25, 2010
Product Category: Intellectual Property
Product Area: Other (Intellectual Property)
Product Sub-area: Other (IP)
IP Product: Triple Speed Ethernet MAC

Title

In the Altera Triple Speed Ethernet (TSE) MegaCore function, how is the PCS register address calculated?

Description

In the Altera^® Triple Speed Ethernet (TSE) MegaCore^® Function, to get the full address of PCS register, the PCS register offset needs to be added to the base register address.

PCS register address (pcs_reg_addr) = PCS register base address + (PCS register offset*2)

(From the TSE User Guide:"For configurations that contain both the MAC and PCS functions, multiply the address offset by 2".)

For example:

PCS control register:

PCS register base address : 0x200 (Table 4-12)

Control register offset : 0x00 (Table 4-22)

PCS control register address = 0x200 + (0x00*2) = 0x200

PCS if_mode register:

PCS  register base address : 0x200 (Table 4-12)

if_mode register offset : 0x28 (Table 4-22)

PCS if_mode register address = 0x200 + (0x28*2) = 0x250

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