cs8952t Cirrus Logic, Inc., cs8952t Datasheet - Page 58

• Manufacturer Part Number: cs8952t
• Description: 100base 10base-t Transceiver
• Manufacturer: Cirrus Logic, Inc.

Self Status Register - Address 19h
58
15
14
13
12
11
10
9
8
7
6
BIT
Full Duplex
Link OK
15
7
Link OK
Power Down
Receiving Data
Descrambler Lock
Disable CRS on
Time-out
Auto-Neg Enable
Status
PAUSE
FEFI Enable
Full Duplex
10BASE-T Mode
NAME
10BASE-T
Power
Down
Mode
14
6
Read Only
Read Only
Read Only
Read Only
Read/Write Reset to the logic
Read Only
Read Only
Read/Write 0
Read Only
Read Only
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
CIM Status
Receiving
TYPE
Data
13
5
0
0
0
0
inverse of the
value on the
REPEATER pin.
If auto-negotiation
is enabled via the
AN[1:0] pins, reset
to 1; otherwise,
reset to 0.
0
If a full duplex
mode is enabled
via the AN[1:0]
pins, reset to 1;
otherwise, reset to
0.
0
Descrambler
RESET
Lock
12
4
CrystalLAN™ 100BASE-X and 10BASE-T Transceiver
Disable CRS
on Time-out
When set, this bit indicates that a valid link connec-
tion has been detected. The type of link established
may be determined from bits 6, 7, and 9. When clear,
this bit indicates that a valid link connection does not
exist. This bit may be used to determine the current
status of the link.
When high, this bit indicates that the CS8952T is in a
low power state.
This bit is high whenever the CS8952T is receiving
valid data. It is a direct copy of the state of the
RX_DV pin accessible by software.
When high, this bit indicates that the descrambler has
successfully locked to the scrambler seed of the far-
end transmitter and is able to descramble received
data.
This bit controls the state of the CRS pin upon a
descrambler time-out. When set, CRS will be forced
low upon a descrambler time-out, and will not be
released until the descrambler has re-acquired syn-
chronization.
This bit reflects the value of bit 12 in the Basic Mode
Control Register (address 00h). When set, it indicates
that auto-negotiation has been enabled. When clear,
this bit indicates that the mode of the CS8952T has
been forced to that indicated by bits 6, and 7.
When set, this bit indicates that the Flow-Control
PAUSE function has been negotiated. This indicates
that both the local device and the link partner have
advertised this capability.
This bit controls the Far-End Fault Generate and
Detect state machines. When this bit is set and auto-
negotiation is disabled (bit 10 is clear), both state
machines are enabled. When clear, this bit disables
both state machines.
When set, this bit indicates that the CS8952T has
been configured for Full-Duplex operation.
When set, this bit indicates that the CS8952T has
been configured for 10 Mb/s operation.
11
3
Enable Status
PHY Address
Auto-Neg
10
2
DESCRIPTION
PAUSE
9
1
FEFI Enable
DS206TPP2
CS8952T
8
0