Altera 10-Gbps Ethernet MAC MegaCore Function - Manual (Page 111)

Chapter 8: Registers 8–17
MAC Registers
February 2014 Altera Corporation 10-Gbps Ethernet MAC MegaCore Function User Guide
8.1.2. Rx_pfc_control Register
Table 8–4 describes the function of each field in the rx_pfc_control register.
3 FWD_CONTROL 1 RW 0x0
When you turn on the Priority-based Flow Control (PFC)
parameter, this bit affects all control frames except the
IEEE 802.3 pause frames and PFC frames. Otherwise, this
bit affects all control frames except the IEEE 802.3 pause
frames.
0—Drops control frames.
1—Forwards control frames to the client.
4 FWD_PAUSE 1 RW 0x0
0—Drops IEEE 802.3 pause frame after processing them.
1—Forwards IEEE 802.3 pause frames to the client.
5 IGNORE_PAUSE 1 RW 0x0
0—Suspends transmission for the value specified by the
pause quanta in the IEEE 802.3 pause frame received.
1—Ignores IEEE 802.3 pause frames.
6 – 15 Reserved — — — Reserved for future use.
16 EN_SUPP0 1 RW 0x0
0—Disables the use of supplementary address 0.
1—Enables the use of supplementary address 0.
17 EN_SUPP1 1 RW 0x0
0—Disables the use of supplementary address 1.
1—Enables the use of supplementary address 1.
18 EN_SUPP2 1 RW 0x0
0—Disables the use of supplementary address 2.
1—Enables the use of supplementary address 2.
19 EN_SUPP3 1 RW 0x0
0—Disables the use of supplementary address 3.
1—Enables the use of supplementary address 3.
20 – 31 Reserved — — — Reserved for future use.
Table 8–3. Rx_frame_control Register (Part 2 of 2)
Bit Field Name Width Access
Reset
Value
Description
Table 8–4. Rx_pfc_control Register
Bit Field Name Width Access
Reset
Value
Description
0 PFC_IGNORE_PAUSE_0 1 RW 0x1
0—Suspends transmission for TX priority queue n for the
period specified by pfc_pause_quanta_n.
1—Ignores the PFC pause request for TX priority queue
n.
1 PFC_IGNORE_PAUSE_1 1 RW 0x1
2 PFC_IGNORE_PAUSE_2 1 RW 0x1
3 PFC_IGNORE_PAUSE_3 1 RW 0x1
4 PFC_IGNORE_PAUSE_4 1 RW 0x1
5 PFC_IGNORE_PAUSE_5 1 RW 0x1
6 PFC_IGNORE_PAUSE_6 1 RW 0x1
7 PFC_IGNORE_PAUSE_7 1 RW 0x1
8 – 15 Reserved — — — Reserved for future use.
16 FWD_PFC 1 RW 0x0
0—Drops the PFC frame after processing it.
1—Forwards the PFC frame to the client.
16 – 31 Reserved — — — Reserved for future use.