Achronix Speedster22i 10G/40G/100G Ethernet Manuel d'utilisateur télécharger pdf (Page 67)

UG029, September 6, 2013

Mode.

See “

10G MAC SGMII PCS Register Map” on page

71.

224-

255

380 -

3fc

reserved

R(W)

Note: The PCS registers are 32 registers

within the addresses at 0x300 .. 0x37f. They

are mirrored at 0x380..0x3ff for write

accesses but not for read. Hence write

accesses to this register area should be

omitted.

COMMAND_CONFIG Register Bit Definitions

Table 35 – COMMAND_CONFIG Register Description

Bit#

Bit Name

Description

TX_ENA

MAC Transmit Path Enable. Should be set to '1' to

enable the MAC transmit path, should be set to '0' (Reset

value) to disable the MAC transmit path.

RX_ENA

MAC Receive Path Enable. Should be set to '1' to enable

the MAC receive path, should be set to '0' (Reset value)

to disable the MAC receive path.

reserved

unused

WAN_MODE

Enable WAN Mode. Sets WAN mode (1) or LAN mode

(0, default) of operation.

Note: When changing the mode, verify correct setting of

the transmit Inter-Packet-Gap (IPG) in register

TX_IPG_LENGTH.

Note: This bit is only available in 10G mode of operation.

It is reserved in 40G and 100G mode of operation.

PROMIS_EN

Enable MAC Promiscuous Operation. If set to '1', all

frames are received without any MAC address filtering. If

set to '0' (Reset value), unicast frames with a destination

address not matching the Core MAC address

(programmed in registers MAC_ADDR_0 and

MAC_ADDR_1) are rejected.

PAD_EN

Enable Frame Padding Removal in receive path. If set to

'1', padding is removed before the frame is conveyed to

the MAC client application. If set to '0' (Reset value), no

padding is removed on receive by the MAC.

Note: Not available in this implementation.

CRC_FWD

Terminate / Forward Received CRC. If set to '1', the

CRC field of received frames is forwarded with the frame

to the user application. If set to '0' (Reset value), the

CRC field is stripped from the frame.

Note: If padding (Bit PAD_EN set to ‘1’) is enabled,

CRC_FWD is ignored.

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 107 108

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Achronix Speedster22i 10G/40G/100G Ethernet Manuel d'utilisateur Page 67

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