Intel IXF1104 - Manual (Page 131)

Intel
®
IXF1104 4-Port Gigabit Ethernet Media Access Controller
131 Datasheet
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
Enable packet padding and CRC appending on transmitted packets in bits 6 and 7, as
needed.
Set bit 5 to 0x0.
b. Fiber Mode:
Write the reserved bits to the default value.
Enable Packet padding and CRC Appending on transmitted packets in bits 6 and 7, as
needed.
Set bit 5 to 1 to enable auto-negotiation.
Set bit 5 to 0 to enable forced mode operation.
13. Assert (set to 1) “Port Enable ($0x500)” .
14. Wait 1 to 2
μs.
15. Perform additional device configurations, as needed.
6.2 Disable and Enable Port Sequences
Intel recommends the following sequences to disable and enable individual ports, and for dropped
links. When a link is dropped, Intel recommends the port be completely reset and flushed to
remove packet fragments that may interfere with the auto-negotiation process on link recovery.
6.2.1 Disable Port Sequence
Use the following sequence to disable an individual port:
1. Disable the port using MAC port enable/disable bits [ “Port Enable ($0x500)” Bits (3-0)].
2. Apply TX FIFO soft reset [ “TX FIFO Port Reset ($0x620)” Bits(3-0)].
3. Introduce some delay to allow completion of packet transmission (not necessary if link is
dropped).
4. Flush TX [ “Flush TX ($ Port_Index + 0x11)” Bit 0].
5. Apply MAC soft reset [ “MAC Soft Reset ($0x505)” Bits(3-0)].
6. Apply RX FIFO soft reset [ “RX FIFO Port Reset ($0x59E)” Bits(3:0)].
6.2.2 Enable Port Sequence
Use the following sequence to enable an individual port:
1. Enable the port(s) using MAC port enable/disable bits [ “Port Enable ($0x500)” Bits (3-0)].
2. Disable TX FIFO soft reset [ “TX FIFO Port Reset ($0x620)” Bits(3-0)].
3. Reset flush TX [ “Flush TX ($ Port_Index + 0x11)” Bit 0].
4. Disable MAC soft reset [ “MAC Soft Reset ($0x505)” Bits(3-0)].
5. Disable RX FIFO soft reset [ “RX FIFO Port Reset ($0x59E)” Bits(3:0)].