KSZ8041NL_08 Datasheet, PDF (10/45 Pages) Micrel Semiconductor – 10Base-T/100Base-TX Physical Layer Transceiver

Micrel, Inc.
KSZ8041NL
Pin Number
20
Pin Name
RXER /
RX_ER /
ISO
Type⁽¹⁾
Ipd/O
21
INTRP
Opu
22
TXC
O
23
TXEN /
I
TX_EN
24
TXD0 /
I
TXD[0]
25
TXD1 /
I
TXD[1]
26
TXD2
I
27
TXD3
I
28
COL /
Ipd/O
CONFIG0
29
CRS /
Ipd/O
CONFIG1
30
LED0 /
Ipu/O
NWAYEN
Pin Function
MII Mode:
Receive Error Output /
RMII Mode:
Receive Error Output /
Config Mode: The pull-up/pull-down value is latched as ISOLATE during
power-up / reset. See “Strapping Options” section for details.
Interrupt Output: Programmable Interrupt Output
Register 1Bh is the Interrupt Control/Status Register for programming the interrupt
conditions and reading the interrupt status. Register 1Fh bit 9 sets the interrupt
output to active low (default) or active high.
MII Mode:
Transmit Clock Output
MII Mode:
Transmit Enable Input /
RMII Mode:
MII Mode:
RMII Mode:
MII Mode:
RMII Mode:
MII Mode:
MII Mode:
Transmit Enable Input
Transmit Data Input[0]⁽⁴⁾ /
Transmit Data Input[0]⁽⁵⁾
Transmit Data Input[1]⁽⁴⁾ /
Transmit Data Input[1]⁽⁵⁾
Transmit Data Input[2]⁽⁴⁾ /
Transmit Data Input[3]⁽⁴⁾ /
MII Mode:
Collision Detect Output /
Config Mode: The pull-up/pull-down value is latched as CONFIG0 during
power-up / reset. See “Strapping Options” section for details.
MII Mode:
Carrier Sense Output /
Config Mode: The pull-up/pull-down value is latched as CONFIG1 during
power-up / reset. See “Strapping Options” section for details.
LED Output: Programmable LED0 Output /
Config Mode: Latched as Auto-Negotiation Enable (register 0h, bit 12) during
power-up / reset. See “Strapping Options” section for details.
The LED0 pin is programmable via register 1Eh bits [15:14], and is defined as
follows.
LED mode = [00]
Link/Activity
Pin State
No Link
H
Link
L
Activity
Toggle
LED Definition
OFF
ON
Blinking
LED mode = [01]
Link
Pin State
No Link
H
Link
L
LED Definition
OFF
ON
LED mode = [10]
Reserved
LED mode = [11]
Reserved
July 2008
10
M9999-071808-1.2