1894K-40LFT IDT, 1894K-40LFT Datasheet - Page 16

• Manufacturer Part Number: 1894K-40LFT
• Description: Ethernet ICs 3.3V 10/100 PHY RMII
• Manufacturer: IDT

Specifications of 1894K-40LFT

• Rohs: yes
• Part # Aliases: ICS1894K-40LFT

Register Map
Register Description
IDT® 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
0
1
2,3
4
5
6
7
8
9 through 15
16 through 31
Register 0 - Control
0.15
0.14
0.13
0.12
0.11
0.10
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Register Address
ICS1894-40
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
Bit
Reset
Loopback enable
Speed select
Auto-Negotiation enable
Low-power mode
Isolate
Auto-Negotiation restart
Duplex mode
Collision test
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
Definition
1
Control
Status
PHY Identifier
Auto-Negotiation Advertisement
Auto-Negotiation Link Partner Ability
Auto-Negotiation Expansion
Auto-Negotiation Next Page Transmit
Auto-Negotiation Next Page Link Partner Ability
Reserved by IEEE
Vendor-Specific (IDT) Registers
No effect
Disable Loopback mode
10 Mbps operation
Disable Auto-Negotiation Enable Auto-Negotiation
Normal power mode
No effect
No effect
Half-duplex operation
No effect
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
Register Name
When Bit = 0
Reset mode
Enable Loopback mode
100 Mbps operation
Low-power mode
Isolate from MII
Restart Auto-Negotiation
Full-duplex operation
Enable collision test
N/A
N/A
N/A
N/A
N/A
N/A
N/A
When Bit = 1
16
Basic / Extended
Extended
Extended
Extended
Extended
Extended
Extended
Extended
Extended
Basic
Basic
Access
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
2
SF
SC
SC
–
–
–
–
–
–
–
–
–
–
–
–
–
–
ICS1894-40
2
Default
0†
0†
0†
0†
0†
0†
0†
0
0
1
1
0
0
0
1
0
PHYCEIVER
3
REV K 022412
Hex
3
1
0
0