STE400P STMicroelectronics, STE400P Datasheet - Page 5

• Manufacturer Part Number: STE400P
• Description: STE400P - 4 PORT 10-100 FAST ETHERNET TRANSCEIVER - PHY DATASHEET
• Manufacturer: STMicroelectronics

Table 1. Pin Description
Media Connections
Clock
LED
Pin.
190
172
140
205
151
132
206
157
131
203
184
178
159
117
118
119
17
25
26
65
66
70
69
87
88
92
91
60
61
75
74
82
83
97
96
6
LC_SER_LED_EN
SER_LED_EN#
LNKLED# {1}
LNKLED# {2}
LNKLED# {3}
LNKLED# {4}
Ser SFRM#
RESET#
RD+ {1}
RD+ {2}
RD+ {3}
RD+ {4}
TD+ {1}
TD+ {2}
TD+ {3}
TD+ {4}
RD- {1}
RD- {2}
RD- {3}
RD- {4}
TD- {1}
TD- {2}
TD- {3}
TD- {4}
CLK25
Name
RXC1
RXC2
RXC3
RXC4
COL1
COL2
COL3
COL4
CRS1
CRS2
CRS3
CRS4
MDIO
MDC
Type
O3s
O3s
I/O
Ipd
Ipu
Oa
I/O
pd
Ia
O
I
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.
Collision Detected. The STE400P 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.
Carrier Sense. During half-duplex operation (PR0:8=0), the STE400P
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.
Management Data Clock. Clock for the MDIO serial data channel.
Maximum frequency is 2.5 MHz.
Management Data Input/Output, Bi-directional serial data channel for PHY
communication.
Reset: Active low. Resets the STE400P. Pin not included in NAND
25 MHz clock.
Transmit Pair: Differential data is transmitted to the media on the TD+-
signal pair
Receive Pair: Differential data from the media is received on the RD+- signal
pair
Link Integrity LED: Active low. This output signal indicates the link status of
the PHY. LNKLED is driven low when the link to the PHY is good. Serial LED
mode is enabled by “pull-down” of pin 159 during reset. WHen the Serial
LED mode is enabled, pin 184 becomes the Serial LED mode frame signal.
Low cost serial LED mode is enabled by “pull down” of pin 198 during reset..
Reference clock input. - 25 MHz This pin must be driven with a continuous
Description
STE400P
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