AM79C873 Advanced Micro Devices, AM79C873 Datasheet - Page 30

• Manufacturer Part Number: AM79C873
• Description: NetPHY -1 10/100 Mbps Ethernet Physical Layer Single-Chip Transceiver with 100BASE-FX Support
• Manufacturer: Advanced Micro Devices

10BASE-T Configuration/Status
(10BTCSRSCR) - Register 18
30
18.9-18.1
18.15
18.14
18.13
18.12
18.11
18.10
18.0
Bit
10BT_SER
Bit Name
Reserved
Reserved
Reserved
JABEN
LP_EN
POLR
HBE
Inverse Pin 94,
Pin 98, RW
Default
1, RW
1, RW
0, RO
0, RO
0, RO
0, RO
RW
P R E L I M I N A R Y
Reserved:
Write as 0, ignore on read.
Link Pulse Enable:
1=Transmission of link pulses enabled.
0=Link pulses disabled, good link condition forced.
This bit is valid only in 10 Mbps operation.
Heartbeat Enable:
1=Heartbeat function enabled.
0=Heartbeat function disabled.
When the NetPHY-1 device is configured for Full Duplex operation, this bit
will be ignored (the collision/heartbeat function is invalid in Full Duplex
mode). The initial state of this bit is the inverse value of RPTR/NODE input
pin at power on reset.
Reserved:
Write as 0, ignore on read.
Jabber Enable:
1= Jabber function enabled.
0= Jabber function disabled.
Enables or disables the Jabber function when the NetPHY-1 device is in
10BASE-T Full Duplex or 10BASE-T Transceiver Loop-back mode.
10BASE-T Serial Mode:
1=10BASE-T serial mode selected.
0=10BASE-T nibble mode selected.
The value on the 10BTSER input pin is latched into this bit at power-up/
rese.t
Serial mode not supported for 100 Mbps operation.
Reserved:
Write as 0, ignore on read.
Polarity Reversed:
When this bit is set to 1, it indicates that the 10M cable polarity is reversed.
This bit is set and cleared by 10BASE-T module automatically.
Am79C873
Description