spec_add4_top (GEM) Register Description
Register Name | spec_add4_top |
---|---|
Offset Address | 0x00000000A4 |
Absolute Address |
0x00FF0B00A4 (GEM0) 0x00FF0C00A4 (GEM1) 0x00FF0D00A4 (GEM2) 0x00FF0E00A4 (GEM3) |
Width | 32 |
Type | mixedMixed types. See bit-field details. |
Reset Value | 0x00000000 |
Description | Specific Address Top |
spec_add4_top (GEM) Register Bit-Field Summary
Field Name | Bits | Type | Reset Value | Description |
---|---|---|---|---|
Reserved | 31:30 | roRead-only | 0x0 | Reserved, read as 0, ignored on write. |
filter_byte_mask | 29:24 | rwNormal read/write | 0x0 | When high, the associated byte of the specific address will not be compared. Bit 24 controls whether the first byte received should be compared. Bit 29 controls whether the last byte received should be compared. |
Reserved | 23:17 | roRead-only | 0x0 | Reserved, read as 0, ignored on write. |
filter_type | 16 | rwNormal read/write | 0x0 | This control bit selects whether this filter should be comparing the MAC source address or the MAC destination address of the received Ethernet frame. When set to zero, the filter is a destination address filter. When set to one, the filter is a source address filter. Specific address 1. The most significant bits of the destination address, that is bits 47:32. |
address | 15:0 | rwNormal read/write | 0x0 | Specific address 1. The most significant bits of the destination/source address that is to be compared, that is bits 47:32. |