STE100P(2000) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STE100P Datasheet PDF : 29 Pages
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STE100P
Table 1. Pin Description
Pin No. Name
Type
Description
42
RXD4
43
RXD3
44
RXD2
46
RXD1
47
RXD0
O
Receive Data. Thc STE100P drives received data on these outputs,
synchronous to RX-CLK.
RXD4 is driven only in Symbol (5B) Mode.
48
RX-DV
O
Receive Data Valid. Thc STE100P asserts This signal when it drives valid data
on RXD. This output is synchronous to RX-CLK.
51
RX-ER
O
Receive Error. The STE100P asserts this output when it receives invalid
symbols from the network. This signal is synchronous to RX-CLK. In Symbol (5B)
Mode this pin is also equivalent to RXD4.
49
RX-CLK
O
Receive Clock. This continuous clock provides reference for RXD. RXDV, and
RXER signals. Refer to the Clock Requirements discussion in the Functional
Description section.
25 MHz for 100 Mbps operation.
2.5 MHz for 10 Mbps operation.
60
COL
O
Collision Detected. The STE100P asserts this output when detecting a collision.
This output remains High for the duration of the collision. This signal is
asynchronous and inactive during full-duplex operation.
61
CRS
O
Carrier Sense. During half-duplex operation (PR0:8=0), the STE100P asserts
this output when either transmit or receive medium is non idle. During full duplex
operation (PR0:8=1), CRS is asserted only when the receive medium is non-idle.
MII Control Interface
41
MDC
I
Management Data Clock. Clock for the MDIO serial data channel. Maximum
frequency is 2.5 MHz.
40
MDIO
I/O Management Data Input/Output, Bi-directional serial data channel for PHY
communication.
62
MDINT
OD Management Data Interrupt. When any bit in PR18 = 1, an active Low output
on this pin indicates status change in the corresponding bits in PR17.
Interrupt is cleared by reading Register PR17
Physical (Twisted Pair) Interface
12
OSC1
I
25 MHz reference clock input. When an external 25 MHz crystal is used, this pin
will be connected to one terminal of it. If an external 25 MHz clock source of
oscillator is used, then this pin will be the input pin of it.
11
OSC2
O
25 MHz reference clock output. When an external 25MHz crystal is used, this pin
will be connected to another terminal of if. If an external clock source is used,
then this pin should be left open.
21
TXP
23
TXN
O
The differential Transmit outputs of 100BASE-TX or 10BASE-T, these pins
directly output to the transformer.
19
RXP
18
RXN
I
The differential Receive inputs of 100BASE-TX or 10BASE-T, these pins directly
input from the transformer.
15
Iref
O
Reference Resistor connecting pin for reference current, directly connects a 5KΩ
± 1% resistor to Vss.
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