1894K-40LFT IDT, 1894K-40LFT Datasheet - Page 25

• 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

IDT® 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
Register
Register
21.15:0
ICS1894-40
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
20.11
20.10
22.15
22.14
22.13
22.12
20.9
20.8
20.7
20.6
20.5
20.4
20.3
20.2
20.1
20.0
Bit
21 - Extended Control Register
22 - Extended Control Register
RXER_CNT
Interrupt flag read clear
Interrupt flag auto clear
Interrupt output enable
Interrupt polarity
LED3 Mode
LED2 Mode
LED1 Mode
LED0 Mode
Definition
enable
enable
000 = Link Integrity
001 = activity/no activity
010 = Transmit Data
011 = Receive Data
100 = Collision
101 = 100/10 mode
110 = Full Duplex
111 = OFF (Default LED3)
000 = Link Integrity
001 = activity/no activity
010 = Transmit Data
011 = Receive Data
100 = Collision
101 = 100/10 mode
110 = Full Duplex
111 = OFF (Default LED2)
000 = Link Integrity
001 = activity/no activity
010 = Transmit Data
011 = Receive Data
100 = Collision
101 = 100/10 mode (Default LED1)
110 = Full Duplex
111 = OFF
000 = Link Integrity
001 = activity/no activity (Default LED0)
010 = Transmit Data
011 = Receive Data
100 = Collision
101 = 100/10 mode
110 = Full Duplex
111 = LINK_STAT
Receive error count for RMII mode
Disable interrupt output
Interrupt flag clear by
read disable
Output low when
interrupt occur
Interrupt flag unchanged
when interrupt condition
removed
When Bit = 0
Enable interrupt output
Interrupt flag clear by read
enable
Output high when
interrupt occur
Interrupt flag cleared
when interrupt condition
removed
When Bit = 1
25
Access
RW
RW
RW
RW
RW
RW
RW
RW
RW
2
SF
–
ICS1894-40
2
Default
1
1
1
1
1
1
1
0
1
0
0
1
0
0
0
0
PHYCEIVER
3
REV K 022412
Hex
E
F
9
0
0