ICS1894-34
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH MII INTERFACE PHYCEIVER
IDT®
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH MII INTERFACE 16
ICS1894-34 REV B 052112
Register 1 - Control
1.15 100Base-T4 Always 0. (Not
supported.)
N/A RO 0 7
1.14 100Base-TX full duplex Mode not supported Mode supported CW 1
1.13 100Base-TX half duplex Mode not supported Mode supported CW 1
1.12 10Base-T full duplex Mode not supported Mode supported CW 1
1.11 10Base-TX half duplex Mode not supported Mode supported CW 1 8
1.10 IEEE reserved Always 0 N/A CW 0†
1.9 IEEE reserved Always 0 N/A CW 0†
1.8 IEEE reserved Always 0 N/A CW 0†
1.7 IEEE reserved Always 0 N/A CW 0† 0
1.6 MF Preamble
suppression
PHY requires MF
Preambles
PHY does not require MF
Preambles
RO 0
1.5 Auto-Negotiation
complete
Auto-Negotiation is in
process, if enabled
Auto-Negotiation is
completed
RO LH 0
1.4 Remote fault No remote fault detected Remote fault detected RO LH 0
1.3 Auto-Negotiation ability N/A Always 1: PHY has
Auto-Negotiation ability
RO 1 9
1.2 Link status Link is invalid/down Link is valid/established RO LL 0
1.1 Jabber detect No jabber condition Jabber condition detected RO LH 0
1.0 Extended capability N/A Always 1: PHY has
extended capabilities
RO 1
Register 2 - PHY Identifier
2.15 OUI bit 3 | c N/A N/A CW 0 0
2.14 OUI bit 4 | d N/A N/A CW 0
2.13 OUI bit 5 | e N/A N/A CW 0
2.12 OUI bit 6 | f N/A N/A CW 0
2.11 OUI bit 7 | g N/A N/A CW 0 0
2.10 OUI bit 8 | h N/A N/A CW 0
2.9 OUI bit 9 | I N/A N/A CW 0
2.8 OUI bit 10 | j N/A N/A CW 0
2.7 OUI bit 11 | k N/A N/A CW 0 1
2.6 OUI bit 12 | l N/A N/A CW 0
2.5 OUI bit 13 | m N/A N/A CW 0
2.4 OUI bit 14 | n N/A N/A CW 1
Bit Definition When Bit = 0 When Bit = 1 Access
2
SF
2
Default
3
Hex
ICS1894-34
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH MII INTERFACE PHYCEIVER
IDT®
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH MII INTERFACE 17
ICS1894-34 REV B 052112
2.3 OUI bit 15 | o N/A N/A CW 0 5
2.2 OUI bit 16 | p N/A N/A CW 1
2.1 OUI bit 17 | q N/A N/A CW 0
2.0 OUI bit 18 | r N/A N/A CW 1
Register 3 - PHY Identifier
3.15 OUI bit 19 | s N/A N/A CW 1 F
3.14 OUI bit 20 | t N/A N/A CW 1
3.13 OUI bit 21 | u N/A N/A CW 1
3.12 OUI bit 22 | v N/A N/A CW 1
3.11 OUI bit 23 | w N/A N/A CW 0 4
3.10 OUI bit 24 | x N/A N/A CW 1
3.9 Manufacturer’s Model
Number bit 5
N/A N/A CW 0
3.8 Manufacturer’s Model
Number bit 4
N/A N/A CW 0
3.7 Manufacturer’s Model
Number bit 3
N/A N/A CW 0 5
3.6 Manufacturer’s Model
Number bit 2
N/A N/A CW 1
3.5 Manufacturer’s Model
Number bit 1
N/A N/A CW 0
3.4 Manufacturer’s Model
Number bit 0
N/A N/A CW 1
3.3 Revision Number bit 3 N/A N/A CW 0 0
3.2 Revision Number bit 2 N/A N/A CW 0
3.1 Revision Number bit 1 N/A N/A CW 0
3.0 Revision Number bit 0 N/A N/A CW 0
Register 4 -
Auto-Negotiation Advertisement
4.15 Next Page Next page not supported Next page supported R/W 0 0
4.14 IEEE reserved Always 0 N/A CW 0†
4.13 Remote fault Locally, no faults
detected
Local fault detected R/W 0
4.12 IEEE reserved Always 0 N/A CW 0†
4.11 IEEE reserved Always 0 N/A CW 0† 1
4.10 IEEE reserved Always 0 N/A CW 0†
4.9 100Base-T4 Always 0. (Not
supported.)
N/A CW 0
4.8 100Base-TX, full duplex Do not advertise ability Advertise ability R/W 1
Bit Definition When Bit = 0 When Bit = 1 Access
2
SF
2
Default
3
Hex
ICS1894-34
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH MII INTERFACE PHYCEIVER
IDT®
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH MII INTERFACE 18
ICS1894-34 REV B 052112
4.7 100Base-T, half duplex Do not advertise ability Advertise ability R/W 1 E
4.6 10Base-T, full duplex Do not advertise ability Advertise ability R/W 1
4.5 10Base-T, half duplex Do not advertise ability Advertise ability R/W 1
4.4 Selector Field bit S4 IEEE 802.3-specified
default
N/A CW 0
4.3 Selector Field bit S3 IEEE 802.3-specified
default
N/A CW 0 1
4.2 Selector Field bit S2 IEEE 802.3-specified
default
N/A CW 0
4.1 Selector Field bit S1 IEEE 802.3-specified
default
N/A CW 0
4.0 Selector Field bit S0 N/A IEEE 802.3-specified
default
CW 1
Register 5 -
Auto-Negotiation Link Partner Ability
5.15 Next Page Next Page disabled Next Page enabled RO 0 0
5.14 Acknowledge Always 0 N/A RO 0
5.13 Remote fault No faults detected Remote fault detected RO 0
5.12 IEEE reserved Always 0 N/A RO 0†
5.11 IEEE reserved Always 0 N/A RO 0† 0
5.10 IEEE reserved Always 0 N/A RO 0†
5.9 100Base-T4 Always 0. (Not
supported.)
N/A RO 0
5.8 100Base-TX, full duplex Link partner is not
capable
Link partner is capable RO 0
5.7 100Base-TX, half duplex Link partner is not
capable
Link partner is capable RO 0 0
5.6 10Base-T, full duplex Link partner is not
capable
Link partner is capable RO 0
5.5 10Base-T, half duplex Link partner is not
capable
Link partner is capable RO 0
5.4 Selector Field bit S4 IEEE 802.3 defined.
Always 0.
N/A RO 0
5.3 Selector Field bit S3 IEEE 802.3 defined.
Always 0.
N/A CW 0 0
5.2 Selector Field bit S2 IEEE 802.3 defined.
Always 0.
N/A CW 0
5.1 Selector Field bit S1 IEEE 802.3 defined.
Always 0.
N/A CW 0
5.0 Selector Field bit S0 N/A IEEE 802.3 defined.
Always 1.
CW 0
Bit Definition When Bit = 0 When Bit = 1 Access
2
SF
2
Default
3
Hex

1894K-34LFT

Mfr. #:
Manufacturer:
IDT
Description:
Ethernet ICs 3.3V 10/100 PHY RMII
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet