DP83816-MAAP National Semiconductor, DP83816-MAAP Datasheet - Page 74
DP83816-MAAP
Manufacturer Part Number
DP83816-MAAP
Description
BOARD EVALUATION DP83816
Manufacturer
National Semiconductor
Datasheet
1.DP83816AVNGNOPB.pdf
(106 pages)
Specifications of DP83816-MAAP
Main Purpose
Interface, Ethernet
Utilized Ic / Part
DP83816
Lead Free Status / RoHS Status
Not applicable / Not applicable
Secondary Attributes
-
Embedded
-
Primary Attributes
-
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4.0 Register Set
4.3.12 False Carrier Sense Counter Register
This counter provides information required to implement the “FalseCarriers” attribute within the MAU managed object
class of Clause 30 of the IEEE 802.3u specification.
4.3.13 Receiver Error Counter Register
This counter provides information required to implement the “SymbolErrorDuringCarrier” attribute within the PHY
managed object class of Clause 30 of the IEEE 802.3u specification.
4.3.14 100 Mb/s PCS Configuration and Status Register
15:13
15:8
Bit
7:0
Bit
12
11
10
15:8
Bit
9
7:0
FCSCNT[7:0] False Carrier Event Counter: Default: 0, RW/COR
RXERCNT[7:0] RXER Counter: Default: 0, RW / COR
SD_FORCE_B
Bit Name
Reserved
FREE_CLK
BYP_4B5B
Bit Name
Bit Name
Reserved
Reserved
TQ_EN
Offset: 00D0h
Offset: 00D4h
Offset: 00D8h
(Continued)
Tag: FCSCR
Tag: RECR
Tag: PCSR
Reserved: Writes ignored, Read as 0
This 8-bit counter increments on every false carrier event. This counter sticks when it reaches its max
count (FFh).
Reserved: Writes ignored, Read as 0
This 8-bit counter increments for each receive error detected. when a valid carrier is present and there
is at least one occurrence of an invalid data symbol. This event can increment only once per valid
carrier event. If a collision is present, the attribute will not increment. The counter sticks when it
reaches its max count.
Reserved: Writes ignored, Read as 0
Bypass 4B/5B Encoding:
1 = 4B5B encoder functions bypassed
0 = Normal 4B5B operation
Receive Clock:
1 = RX_CK is free-running
0 = RX_CK phase adjusted based on alignment
100 Mb/s True Quiet Mode Enable:
1 = Transmit True Quiet Mode
0 = Normal Transmit Mode
Signal Detect Force:
1 = Forces Signal Detection
0 = Normal SD operation
Access: Read Write
Access: Read Write
Access: Read Write
Size: 16 bits
Size: 16 bits
Size: 16 bits
74
Description
Description
Description
Hard Reset: 0000h
Hard Reset: 0000h
Hard Reset: 0100h
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