KS8737 Micrel Inc, KS8737 Datasheet - Page 7

• Manufacturer Part Number: KS8737
• Manufacturer: Micrel Inc

Specifications of KS8737

• Lead Free Status / RoHS Status: Not Compliant

Note 1.
August 2003
KS8737
Pin Number
55
56
57
58
59
60
61
62
64
P = power supply
G = ground
I = input
O = output
I/O = bi-directional
Pin Name
RXER
TXER
TXEN
TXD0
TXD1
TXD2
TXD3
COL
TXC
Type
I/O
I/O
(Note 1)
O
O
I
I
Pin Function
MII Receive Error Output. Driven High synchronously on the falling edge of
RXCLK when invalid symbol has been detected in 100BaseTX mode. This pin is
ignored in 10BaseT operation. High impedance when PHY is isolated
MII Transmit Error Input. A High on this pin causes the 4B/5B encode process to
substitute the Transmit Error code-group for the encoded data word. This pin is
ignored in a 10BaseT operation. When TXER is not used, this pin should be tied
Low through a 10k
MII Transmit Clock Output / Back to Back Mode Clock Input. During normal
operation TXC is an output pin. It provides 25MHz in 100BaseTX mode, 2.5MHz
in 10BaseT nibble mode. In back to back mode it becomes an input pin. High
impedance when PHY is isolated.
MII Transmit Enable Input. A High on this pin causes the transmit data TXD[3:0] to
be encoded and scrambled for transmission.
MII Transmit Data Input. TXD0 is the LSB. High impedance when PHY is
isolated.
MII Collision Detect Output. Active High. High impedance when PHY is isolated.
This signal is de-asserted in full-duplex operation.
7
resistor.
KS8737
Micrel