pnx1500 NXP Semiconductors, pnx1500 Datasheet - Page 688

• Manufacturer Part Number: pnx1500
• Description: Pnx15xx Series Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
Table 2: LAN100 Registers
PNX15XX_SER_3
Product data sheet
Bit
19:16
15:0
Offset 0x07 2160
The Receive Status Vector register stores the most recent receive status returned by the MII Interface.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15:0
Offset 0x07 2170
31:16
15:0
Offset 0x07 2174
Symbol
TransmitCollisionCount
TransmitByteCount
-
VLAN
UnsupportedOpcode
Pause
ControlFrame
DribbleNibble
Broadcast
Multicast
ReceiveOK
LengthOutOfRange
LengthCheckError
CRCError
ReceiveCodeViolation
CarrierEventPreviouslyS
een
RXDVEventPreviouslyS
een
PacketPreviouslyIgnored RO
ReceivedByteCount
PauseTimer
MirrorCounter
Receive Status Vector Register (RSV)
Flow Control Counter Register (FlowControlCounter)
Flow Control Status Register (FlowControlStatus)
…Continued
Acces
s
RO
RO
-
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
R/W
R/W
Value
Rev. 3 — 17 March 2006
Description
The number of collisions the current packet incurred during
transmission attempts. The maximum number of collisions (16)
cannot be represented.
The total number of bytes in the frame not counting the collided
bytes.
Unused
The frame’s length/type field contained 0x8100, which is the VLAN
protocol identifier.
The current frame was recognized as a Control Frame, but it
contains an unknown opcode.
The frame was a control frame with a valid PAUSE opcode.
The frame was a control frame.
Indicates that after the end of packet, another 1-7 bits were
received. A single nibble, called the “dribble nibble,” is formed but
not sent out.
The packet’s destination was a broadcast address.
The packet’s destination was a multicast address.
The packet had valid CRC and no symbol errors.
Indicates that the frame type/length field was larger than 1518
bytes.
Indicates that the frame length field does not match the actual
number of data items, and is not a type field.
The attached CRC in the packet did not match the CRC generated
internally.
Indicates that MII data does not represent a valid receive code when
LAN_RX_ER is asserted during the data phase of a frame.
Indicates that at some time since the last receive statistics, a carrier
event was detected.
Indicates that the last receive event seen was not long enough to be
a valid packet.
Indicates that a packet since the last RSV was dropped.
Indicates length of received frame.
In full-duplex mode, the PauseTimer field specifies the value that is
inserted into the pause timer field of a pause flow control frame. In
half-duplex mode, the PauseTimer field specifies the number of
backpressure cycles.
In full-duplex mode, the MirrorCounter specifies the number of
cycles to wait before reissuing the Pause control frame. In
half-duplex mode, the MirrorCounter allows to keep on sending out
the preamble until TxFlowControl is de-asserted.
Chapter 23: LAN100 — Ethernet Media Access Controller
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX15xx Series
23-19