WBLXT9785HE.D0-865114 Cortina Systems Inc, WBLXT9785HE.D0-865114 Datasheet - Page 43
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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
Lead Free Status / RoHS Status
Compliant
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LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
Table 12
Table 13
Cortina Systems
JTAG Test Signal Descriptions – PQFP
Miscellaneous Signal Descriptions – PQFP (Sheet 1 of 4)
®
1. Type Column Coding: I = Input, O = Output, OD = Open Drain, TS = Three-State-able output, SMT =
2. The IP/ID resistors are disabled during H/W Power-Down mode. If a pin is an output or an I/O, the IP/ID
3. TDO output is three-stated in H/W Power-Down mode and during H/W reset.
1. Type Column Coding: I = Input, O = Output, OD = Open Drain Output, ST = Schmitt Triggered Input, TS =
2. The IP/ID resistors are disabled during hardware power-down mode.
3. The LINKHOLD ability is available only for stepping 4 (Revision D0).
PQFP
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
PQFP
167
168
169
170
171
Designation
94
93
Designation
Schmitt Triggered input, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-
Down.
resistors are also disabled when the output is enabled.
Three-State-able Output, SL = Slew-rate Limited Output, IP = Weak Internal Pull-Up, ID = Weak Internal
Pull-Down.
Pin/Ball
Pin/Ball
PBGA
PBGA
M16
M17
N14
N15
N16
N3,
M4
Symbol
TRST
TMS
TxSLEW_0
TxSLEW_1
TDO
TCK
TDI
Symbol
I, ST, IP
I, ST, IP
I, ST, ID
I, ST, IP
Type
O, TS
I, ST, ID
Type
1
1
Signal Description
Test Data Input.
Test data sampled with respect to the rising edge of TCK.
Test Data Output.
Test data driven with respect to the falling edge of TCK.
Test Mode Select.
Test Clock.
Clock input for JTAG test.
Test Reset.
Reset input for JTAG test.
Signal Description
Tx Output Slew Controls 0 and 1 Defaults.
These pins are read at startup or reset. Their value at
that time is used to set the default state of Register bits
27.11:10 for all ports. These register bits can be read
and overwritten after startup / reset.
These pins select the TX output slew rate for all ports
(rise and fall time) as follows:
TxSLEW_1
0
0
1
1
TxSLEW_0
2,3
0
1
0
1
2
3.2 PQFP Signal Descriptions
Slew Rate (Rise and Fall
3.3 ns
3.6 ns
3.9 ns
4.2 ns
Time)
Page 43
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