CX82100 Home Network Processor Data Sheet
Bit(s)
15
Type
RW
Default
1’b0
Name
E_NA_JBD
Description
Jabber Disable.
0 = Enable.
1 = Disable checking for exceedingly long packets during transmit
operations. If the Transmit Jabber function is enabled, E_S_TJT
will be set after the timer has expired.
E_NA_JCLK controls the duration of the Transmit Jabber Time-Out
clock.
14
RW
1’b0
E_NA_HUJ
Host Un-Jabber Control.
This field configures the time delay between a Transmit Jabber time-
out event and re-enabling the transmit process.
0 = 420 ms/42 ms.
1 = Immediate.
The bit-time is dependent on the current network operating speed.
Jabber Clock Control.
13
12
RW
RW
1’b0
1’b0
E_NA_JCLK
E_NA_SB
This field is used to configure the length of the timer used to detect
transmit jabber conditions and cut-off transmission.
0 = 26 ms/2.6 ms.
1 = 2560 bit-times.
Start/Stop Backoff Counter.
0 = Incrementing of the collision backoff counter is not stopped
while Carrier Sense is true.
1 = Incrementing of the collision backoff counter is stopped while
Carrier Sense is true. Once Carrier Sense is false, the counter
will resume incrementing.
Valid only in Half-Duplex mode. If this field is cleared, the collision
backoff counter may expire while Carrier Sense is true. Since Carrier
Sense is an indication of network activity, the HNP may attempt to
transmit and have to defer.
11
RW
RW
1’b0
E_NA_FD
E_NA_OM
Full-Duplex Select.
0 = Configure for half-duplex operation.
1 = Configure for full-duplex operation.
Operating Mode Select.
10:9
2’b00
Configures the device for normal operation or Loopback test modes.
00 = Normal operation.
10 = External Loopback test.
01 = Internal Loopback test.
11 = Reserved.
8
RW
1’b0
E_NA_FC
TX Force Collisions.
0 = Do not force collisions on each transmit attempt while in Internal
Loopback mode.
1 = Force collisions on each transmit attempt while in Internal
Loopback mode.
7-WS Enable.
0 = Enable Parallel Data Mode on MII pins.
1 = Enable 7-wire serial interface (7-WS) on MII pins.
Receive Start/Stop Control.
1 = Start receive.
0 = Stop receive.
7
6
5
4
RW
RW
RW
RW
1’b0
1’b0
1’b0
1’b0
E_NA_HLAN
E_NA_SR
E_NA_NS
Network Speed Select.
0 = Configure 100 Mbps network speed.
1 = Configure 10 Mbps network speed.
Receive Watchdog Release Time Select.
0 = Release watchdog timer 24 bit times after carrier is deasserted.
1 = Release watchdog timer 48 bit times after carrier is deasserted.
E_NA_RWR
101306C
Conexant Proprietary and Confidential Information
7-31
CONEXANT [ CONEXANT SYSTEMS, INC ]
