WBLXT9785HE.D0-865114 Cortina Systems Inc, WBLXT9785HE.D0-865114 Datasheet - Page 107
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WBLXT9785HE.D0-865114
Manufacturer Part Number
WBLXT9785HE.D0-865114
Description
Manufacturer
Cortina Systems Inc
Datasheet
1.WBLXT9785HE.D0-865114.pdf
(221 pages)
Specifications of WBLXT9785HE.D0-865114
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LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
Table 39
Cortina Systems
BGA15 Signal Descriptions (Sheet 2 of 7)
®
1. Type Column Coding: I = Input, O = Output, OD = Open Drain output, ST = Schmitt Triggered input, TS =
2. Switched to TPIP/N Inputs when MDIX is not active (twisted-pair, non-crossover MDI mode).
3. Switched to TPOP/N Outputs when MDIX is not active (twisted-pair, non-crossover MDI mode).
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
RxData0_SS
RxData1_SS
RxData2_SS
RxData3_SS
RxData4_SS
RxData5_SS
RxData6_SS
RxData7_SS
Three-State-able output, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-
Down.
RxData0_S
RxData1_S
RxData2_S
RxData3_S
RxData4_S
RxData5_S
RxData6_S
RxData7_S
MDINT_L
RxSYNC
TxSYNC
Symbol
TxCLK
RxCLK
MDIO
Designation
BGA15 Ball
M2,
M3,
M1,
N3,
K2,
H3,
E3,
B4,
H2,
C2,
A4,
F2,
G1
J2,
F3,
C5
K1
E1
C6
N5
P5
J3
MDIO Control Interface Signal Descriptions
SS-SMII Specific Signal Descriptions
OD, TS,
I/O, TS,
O, TS,
O, TS,
O, TS,
SL, IP
O, TS
Type
I, ID
I, ID
SL,
ID
ID
ID
IP
Signal Description
Receive Data - Ports 0-7.
These serial output streams provide data received from the
network. The LXT9785/LXT9785E drives the data out
synchronously to REFCLK.
SS-SMII Transmit Synchronization.
The MAC must generate a TxSYNC pulse every 10 TxCLK
cycles to mark the start of TxData segments.
SS-SMII Receive Synchronization.
The LXT9785/LXT9785E generates these pulses every 10
RxCLK cycles to mark the start of RxData segments for the
MAC.
SS-SMII Transmit Clock.
The MAC sources this 125 MHz clock as the timing
reference for TxData and TxSYNC.
SS-SMII Receive Clock.
The LXT9785/LXT9785E generates these clocks, based on
REFCLK, to provide a timing reference for RxData and
RxSYNC to the MAC.
Receive Data - Ports 0-7.
These serial output streams provide data received from the
network. The LXT9785/LXT9785E drives the data out
synchronously to REFCLK.
Management Data Input/Output.
Bidirectional serial data channel for communication
between the PHY and MAC or switch ASIC. Refer to
Figure 21 on page
Management Data Interrupt.
When Register bit 18.1 = 1, an active Low output on this
Pin indicates status change. Refer to
page
136.
136.
3.6 BGA15 Signal Descriptions
Figure 21 on
Page 107
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