L3_L4_Control0

This register controls the operations of the filter 0 of Layer 3 and Layer 4.

Module Instance	Base Address	Register Address
`emac0`	`0xFF700000`	`0xFF700400`
`emac1`	`0xFF702000`	`0xFF702400`

Offset: 0x400

Access: RW

Important: To prevent indeterminate system behavior, reserved areas of memory must not be accessed by software or hardware. Any area of the memory map that is not explicitly defined as a register space or accessible memory is considered reserved.

Bit Fields
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
`Reserved`										`l4dpim0` `RW 0x0`	`l4dpm0` `RW 0x0`	`l4spim0` `RW 0x0`	`l4spm0` `RW 0x0`	`Reserved`	`l4pen0` `RW 0x0`
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
`l3hdbm0` `RW 0x0`					`l3hsbm0` `RW 0x0`					`l3daim0` `RW 0x0`	`l3dam0` `RW 0x0`	`l3saim0` `RW 0x0`	`l3sam0` `RW 0x0`	`Reserved`	`l3pen0` `RW 0x0`

L3_L4_Control0 Fields

Bit	Name	Description	Access	Reset
21	`l4dpim0`	When set, this bit indicates that the Layer 4 Destination Port number field is enabled for inverse matching. When reset, this bit indicates that the Layer 4 Destination Port number field is enabled for perfect matching. This bit is valid and applicable only when Bit 20 (L4DPM0) is set high.	`RW`	`0x0`
20	`l4dpm0`	When set, this bit indicates that the Layer 4 Destination Port number field is enabled for matching. When reset, the MAC ignores the Layer 4 Destination Port number field for matching.	`RW`	`0x0`
19	`l4spim0`	When set, this bit indicates that the Layer 4 Source Port number field is enabled for inverse matching. When reset, this bit indicates that the Layer 4 Source Port number field is enabled for perfect matching. This bit is valid and applicable only when Bit 18 (L4SPM0) is set high.	`RW`	`0x0`
18	`l4spm0`	When set, this bit indicates that the Layer 4 Source Port number field is enabled for matching. When reset, the MAC ignores the Layer 4 Source Port number field for matching.	`RW`	`0x0`
16	`l4pen0`	When set, this bit indicates that the Source and Destination Port number fields for UDP frames are used for matching. When reset, this bit indicates that the Source and Destination Port number fields for TCP frames are used for matching. The Layer 4 matching is done only when either L4SPM0 or L4DPM0 bit is set high.	`RW`	`0x0`
15:11	`l3hdbm0`	IPv4 Frames: This field contains the number of higher bits of IP Destination Address that are matched in the IPv4 frames. The following list describes the values of this field: * 0: No bits are masked. * 1: LSb[0] is masked. * 2: Two LSbs [1:0] are masked. * ... * 31: All bits except MSb are masked. IPv6 Frames: Bits [12:11] of this field correspond to Bits [6:5] of L3HSBM0, which indicate the number of lower bits of IP Source or Destination Address that are masked in the IPv6 frames. The following list describes the concatenated values of the L3HDBM0[1:0] and L3HSBM0 bits: * 0: No bits are masked. * 1: LSb[0] is masked. * 2: Two LSbs [1:0] are masked. * ... * 127: All bits except MSb are masked. This field is valid and applicable only if L3DAM0 or L3SAM0 is set high.	`RW`	`0x0`
10:6	`l3hsbm0`	IPv4 Frames: This field contains the number of lower bits of IP Source Address that are masked for matching in the IPv4 frames. The following list describes the values of this field: * 0: No bits are masked. * 1: LSb[0] is masked. * 2: Two LSbs [1:0] are masked. * ... * 31: All bits except MSb are masked. IPv6 Frames: This field contains Bits [4:0] of the field that indicates the number of higher bits of IP Source or Destination Address matched in the IPv6 frames. This field is valid and applicable only if L3DAM0 or L3SAM0 is set high.	`RW`	`0x0`
5	`l3daim0`	When set, this bit indicates that the Layer 3 IP Destination Address field is enabled for inverse matching. When reset, this bit indicates that the Layer 3 IP Destination Address field is enabled for perfect matching. This bit is valid and applicable only when Bit 4 (L3DAM0) is set high.	`RW`	`0x0`
4	`l3dam0`	When set, this bit indicates that Layer 3 IP Destination Address field is enabled for matching. When reset, the MAC ignores the Layer 3 IP Destination Address field for matching. Note: When Bit 0 (L3PEN0) is set, you should set either this bit or Bit 2 (L3SAM0) because either IPv6 DA or SA can be checked for filtering.	`RW`	`0x0`
3	`l3saim0`	When set, this bit indicates that the Layer 3 IP Source Address field is enabled for inverse matching. When reset, this bit indicates that the Layer 3 IP Source Address field is enabled for perfect matching. This bit is valid and applicable only when Bit 2 (L3SAM0) is set high.	`RW`	`0x0`
2	`l3sam0`	When set, this bit indicates that the Layer 3 IP Source Address field is enabled for matching. When reset, the MAC ignores the Layer 3 IP Source Address field for matching. Note: When Bit 0 (L3PEN0) is set, you should set either this bit or Bit 4 (L3DAM0) because either IPv6 SA or DA can be checked for filtering.	`RW`	`0x0`
0	`l3pen0`	When set, this bit indicates that the Layer 3 IP Source or Destination Address matching is enabled for the IPv6 frames. When reset, this bit indicates that the Layer 3 IP Source or Destination Address matching is enabled for the IPv4 frames. The Layer 3 matching is done only when either L3SAM0 or L3DAM0 bit is set high.	`RW`	`0x0`