CS8952T Datasheet, PDF (37/86 Pages) Cirrus Logic – 100BASE E-X AND 10BASE-T TRANSCEIVER

CS8952T
CrystalLAN™ 100BASE-X and 10BASE-T Transceiver
Auto-Negotiation Advertisement Register - Address 04h
15
14
13
12
11
10
9
8
Next Page Acknowledge Remote Fault
Technology Ability Field
7
6
5
4
3
2
1
0
Technology Ability Field
Protocol Selector Field
BIT
NAME
15 Next Page
TYPE
Read/Write 0
RESET
DESCRIPTION
When set, this bit enables the ability to exchange
Next-Pages with the link partner. This bit should be
cleared if it is not desired to engage in Next Page
exchange.
Note: This bit is disabled, and writes to this bit are
ignored when the National Compatibility Mode bit of
the 10BASE-T Configuration Register (address 1Ch)
is set.
14 Acknowledge
Read Only 0
When set, this bit indicates consistent reception of
the link partner’s data.
13 Remote Fault
Read/Write 0
This bit may be used to indicate a fault condition to
the link partner. Setting this bit will signal to the link
partner that a fault condition has occurred.
12:5 Technology Ability Read/Write Reset value is This field determines the advertised capabilities of
Field
dependent on the the CS8952T as shown below. When the bit is set,
status of the
the corresponding technology will be advertised dur-
AN[1:0] pins (See ing auto-negotiation.
Table 5).
BIT Capability
12 Reserved
11 Reserved
10 PAUSE operation for full duplex links.
9 100BASE-T4 (Note: this technology is not sup-
ported and can not be set.)
8 100BASE-TX Full Duplex
7 100BASE-TX Half Duplex
6 10BASE-T Full Duplex
4:0 Protocol Selector Read/Write 0 0001
Field
5 10BASE-T Half Duplex
This field is used to identify the type of message
being sent by auto-negotiation. This field defaults to a
value of “00001” for IEEE 802.3 messages.
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
DS206TPP2
37