cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 131

• Manufacturer Part Number: cx82100
• Description: Home Network Processor Hnp
• Manufacturer: Conexant Systems, Inc.

7.11.4
101306C
Bit(s)
30:27
24:21
20:17
31
26
25
16
15
14
13
12
11
10
Type
RW*
RW*
RW*
RW*
RW*
RW*
RW*
RW*
RW*
RW*
RW*
RW*
RW*
EMAC x Status Register (E_Stat_1: 0x00310008 and E_Stat_2: 0x00320008)
Default
1’b0
4’b0
1’b0
1’b0
4’b0
4’b0
1’b0
1’b0
1’b0
1’b0
1’b0
1’b0
1’b0
Conexant Proprietary and Confidential Information
E_Stat_1 and E_Stat_2 are the EMAC Status registers for EMAC1 and EMAC2,
respectively. Writing to this register will clear all of its bits (as denoted by RW*).
E_S_RS
E_S_TU
E_S_RO
E_S_RWT
E_S_TDS
E_S_TS
E_S_TOF
E_S_TUF
E_S_ED
E_S_DF
E_S_CD
E_S_ES
E_S_RLD
CX82100 Home Network Processor Data Sheet
Name
Transmit Stopped.
Receive State.
Receive FIFO Overflow.
Receive Watchdog Time-Out.
Transmit Buffer Manager State.
For test only.
Transmit State.
Indicates the transmitter state (except during setup frames). For test
only.
Transmit FIFO Overflow.
Transmit FIFO Underflow.
Excessive Transmit Deferrals.
Deferred Frame.
Carrier Done.
Transmitter Error Summary.
Reload Abort.
0 = Descriptor ready.
1 = Descriptor not ready.
Indicates the receiver MII state (for test only).
0 = Receive FIFO has not overflowed.
1 = Receive FIFO has overflowed.
0 = Receive watchdog timer has not expired.
1 = Receive watchdog timer has not expired (based on LAN_WTR).
0 = Transmit FIFO has not overflowed.
1 = Transmit FIFO has overflowed.
0 = Transmit FIFO has not underflowed.
1 = Transmit FIFO has underflowed.
0 = Deferred longer than 10 Mbps (8192 x 400 ns) while attempting
1 = Deferred longer than 100 Mbps (81920 x 40 ns) while
0 = Current transmit frame has not been deferred at least once.
1 = Current transmit frame has been deferred at least once.
0 = Frame transmit not done from MII interface.
1 = Frame transmit done from MII interface.
0 = None of the bits indicated by the 1 state are set.
1 = Any of the following transmit error status bits are set to a 1:
0 = Transmit FIFO reload/abort has not occurred during current
1 = Transmit FIFO reload/abort has occurred during current frame
to transmit.
attempting to transmit.
Transmit Fault (E_S_TF), 16+ Collisions (E_S_16), Late
Collision (E_S_LC), No Carrier (E_S_NCRS), Lost Carrier
(E_S_LCRS), or Transmit Jabber Timeout (E_S_TJT).
frame (includes collisions).
(includes collisions).
Description
7-33