MX98725 Ver la hoja de datos (PDF) - Macronix International
Número de pieza
componentes Descripción
Lista de partido
MX98725 Datasheet PDF : 33 Pages
| |||
MX98725
5.2.6 OPERATION MODE REGISTER ( CSR6 )
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SCR-Scrambler Mode
PCS-PCS function
TTM-Transmit Threshold Mode
SF-Store and Forward
HBD-Hearbeat Disable
PS-Port Select
COE-Collision Offset Enable
TR-Threshold Control Bits
ST-Start/Stop Transmission Command
FC-Force collision mode
LOM-Loopback Operation Mode
FD-Full Duplex Mode
PM-Pass All Multicast
PR-Promiscuous Mode
SB-Start/Stop Backoff Counter
IF-Inverse Filtering
PB-Pass Bad Frame
HO-Hash-Only Filtering Mode
SR-Start/Stop Receive
HP-Hash/Perfect Receive Filtering Mode
Field
24
23
Name
SCR
PCS
22
TTM
21
SF
19
HBD
18
PS
17
COE
15:14 TR
13
ST
Description
Scrambler Mode, default is set to enable scrambler function. Not affected by software reset.
Default is set to enable PCS functions. CSR6<18> must be set in order to operate in
symbol mode.
Transmit Threshold Mode, set for 10 Base-T and reset for 100 Base-TX.
Store and Forward, when set, transmission starts only if a full packet is in transmit FIFO.
the threshold values defined in CSR6<15:14> are ignored
Heartbeat Disable, set to disable SQE function in 10 Base-T mode.
Port Select, deafult is o which is 10 Base-T mode, set for 100 Base-TX mode.
A software reset does not affect this bit.
Collision Offset Enable, set to enable a modified backoff algorithm during low collision
situation, reset for normal backoff algorithm.
Threshold Control Bits, these bits controls the selected threshold level for MX98725's transmit
FIFO, transmission starts when frame size within the transmit FIFO is larger than the
selected threshold. Full frames with a length less than the threshold are also transmitted.
Start/Stop Transmission Command, set to place transmission process in running state and
will try to transmit current descriptor in transmit list. When reset, transmit process is placed
in stop state.
P/N:PM0488
REV. 1.7, SEP. 15, 1998
17
Share Link: 