LULXT9785MBC.D0-865133 Cortina Systems Inc, LULXT9785MBC.D0-865133 Datasheet - Page 89
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LULXT9785MBC.D0-865133
Manufacturer Part Number
LULXT9785MBC.D0-865133
Description
Manufacturer
Cortina Systems Inc
Datasheet
1.LULXT9785MBC.D0-865133.pdf
(221 pages)
Specifications of LULXT9785MBC.D0-865133
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LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
Table 32
Cortina Systems
Miscellaneous Signal Descriptions – BGA23 (Sheet 2 of 4)
®
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).
BGA23
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
L17,
M2,
M3,
N1,
L16
L15
L4,
N2
K1
Designation
Three-State-able Output, SL = Slew-rate Limited Output, IP = Weak Internal Pull-Up, ID = Weak Internal
Pull-Down.
Ball/Pin
PQFP
176
178
177
88
89
90
91
92
83
MODESEL_1
MODESEL_0
AMDIX_EN
SECTION
Symbol
ADD_4
ADD_3
ADD_2
ADD_1
ADD_0
I, ST, ID
I, ST, ID
I, ST, ID
I, ST, IP
Type
1
Signal Description
Address <4:0>.
Sets base address. Each port adds its port number
(starting with 0) to this address to determine its PHY
address.
Port 0 Address = Base
Port 1 Address = Base + 1
Port 2 Address = Base + 2
Port 3 Address = Base + 3
Port 4 Address = Base + 4
Port 5 Address = Base + 5
Port 6 Address = Base + 6
Port 7 Address = Base + 7
Mode Select[1:0].
00 = RMII
01 = SMII
10 = SS-SMII
11 = Reserved
All ports are configured the same. Interfaces cannot be
mixed and must be all RMII, SMII, or SS-SMII.
Sectionalization Select.
This pin selects sectionalization into separate ports.
0 = 1x8 ports,
1 = 2x4 ports
Auto MDI/MDIX Enable Default.
This pin is read at startup or reset. Its value at that time
is used to set the default state of Register bit 27.9 for
all ports. These register bits can be read and
overwritten after startup / reset. Refer to
MDIX Selection, on page
When active (High), automatic MDI crossover (MDIX)
(regardless of segmentation) is selected for all ports.
When inactive (Low) MDIX is selected according to the
MDIX pin.
2
3.4 BGA23 Signal Descriptions
116.
Table 40,
Page 89
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