lxt972a Intel Corporation, lxt972a Datasheet - Page 15

• Manufacturer Part Number: lxt972a
• Description: 3.3v Dual-speed Fast Ethernet Transceiver Datasheet
• Manufacturer: Intel Corporation

Datasheet
7, 11, 13,
1. Type Column Coding: I = Input, O = Output, A = Analog, OD = Open Drain.
2. If JTAG port is not used, these pins do not need to be terminated.
1. Type Column Coding: I = Input, O = Output, A = Analog, OD = Open Drain
LQFP
14, 15,
16, 18,
25, 26,
32, 41,
Pin#
LQFP
50, 61
21, 22
LQFP
Pin#
8, 40
Pin#
27
28
29
30
31
51
38
37
36
Table 5. LXT972A Power Supply Signal Descriptions
Table 6. LXT972A JTAG Test Signal Descriptions
Table 7. LXT972A LED Signal Descriptions
TDI
TDO
TMS
TCK
TRST
VCCD
GND
VCCIO
VCCA
LED/CFG1
LED/CFG2
LED/CFG3
2
Symbol
2
2
2
Symbol
2
Symbol
Type
Type
O
Type
I
I
I
I
-
-
-
-
I/O
1
1
3.3V Dual-Speed Fast Ethernet Transceiver Datasheet — LXT972A
Digital Power. Requires a 3.3V power supply.
Ground.
MII Power. Requires either a 3.3V or a 2.5V supply. Must be supplied from the same
source used to power the MAC on the other side of the MII.
Analog Power. Requires a 3.3V power supply.
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. Test clock input sourced by ATE.
Test Reset. Test reset input sourced by ATE.
LED Drivers 1 -3. These pins drive LED indicators. Each LED can display one of
several available status conditions as selected by the LED Configuration Register
(refer to
Configuration Inputs 1-3. These pins also provide initial configuration settings (refer
to
Table 8 on page 24
Table 50 on page 68
for details).
for details).
Signal Description
Signal Description
Signal Description
15