Cypress S6J3200 Series, Manual

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CHAPTER 21:Ethernet MAC
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 805
4.130.
Screening Type 1 Register i
(ETHERNETn_screening_type_1_register_i) (i=0 to 15)
Description of Screening Type 1 register is shown.
Screening Type 1 registers are used to allocate up to 16 priority queues to received frames based on
certain IP or UDP fields of incoming frames. Firstly, when DS/TC match enable is set (bit 28), the DS
(Differentiated Services) field of the received IPv4 header or TC field (Traffic Class) of IPv6 headers are
matched against bits [11:4]. Secondly, when UDP port match enable is set (bit 29), the UDP Destination
Port of the received UDP frame is matched against bits [27:12]. Both UDP and DS/TC matching can be
enabled simultaneously or individually. If a match is successful, then the queue value programmed in bits
[3:0] is allocated to the frame
REGISTER_NAME ETHERNETn_screening_type_1_register_i
OFFSET (0x500 + (i*0x4))
ACCESS_SIZE W
MULTIPLE 0:15
NUMERIC_TYPE
OTHER
BIT_OFFSET 31 30 29 28 27 26 25 24
BIT_NAME Reserved udp_port_match_enable dstc_enable udp_port_match[15:12]
ACCESS_TYPE R0,WX R/W R/W R/W
PROT_TYPE Wp
INITIAL_VALUE 0x0 0 0 0x0
BIT_OFFSET 23 22 21 20 19 18 17 16
BIT_NAME udp_port_match[11:4]
ACCESS_TYPE R/W
PROT_TYPE Wp
INITIAL_VALUE 0x00
BIT_OFFSET 15 14 13 12 11 10 9 8
BIT_NAME udp_port_match[3:0] dstc_match[7:4]
ACCESS_TYPE R/W R/W
PROT_TYPE Wp
INITIAL_VALUE 0x0 0x0
BIT_OFFSET 7 6 5 4 3 2 1 0
BIT_NAME dstc_match[3:0] queue_number[3:0]
ACCESS_TYPE R/W R/W
PROT_TYPE Wp
INITIAL_VALUE 0x0 0x0
[bit31:30] Reserved
Always read "0". Writing has no effect.