Page 111
Cortina Systems LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
3.6 BGA15 Signal Descriptions
LED1_1_L
LED1_2_L
LED1_3_L
N8
P8
L8
OD, TS,
SL, IP
Port 1 LED Drivers 1-3.
These pins drive LED indicators for Port 1. Each LED can
display one of several available status conditions as
selected by the LED Configuration Register (refer to
LED2_1_L
LED2_2_L
LED2_3_L
P7
N7
M7
OD, TS,
SL, IP
Port 2 LED Drivers 1-3.
These pins drive LED indicators for Port 2. Each LED can
display one of several available status conditions as
selected by the LED Configuration Register (refer to
LED3_1_L
LED3_2_L
LED3_3_L
P6
N6
M6
OD, TS,
SL, IP
Port 3 LED Drivers 1-3.
These pins drive LED indicators for Port 3. Each LED can
display one of several available status conditions as
selected by the LED Configuration Register (refer to
LED4_1_L
LED4_2_L
LED4_3_L
B9
A9
D8
OD, TS,
SL, IP
Port 4 LED Drivers 1-3.
These pins drive LED indicators for Port 4. Each LED can
display one of several available status conditions as
selected by the LED Configuration Register (refer to
LED5_1_L
LED5_2_L
LED5_3_L
B8
A8
C7
OD, TS,
SL, IP
Port 5 LED Drivers 1-3.
These pins drive LED indicators for Port 5. Each LED can
display one of several available status conditions as
selected by the LED Configuration Register (refer to
LED6_1_L
LED6_2_L
LED6_3_L
A7
B7
D6
OD, TS,
SL, IP
Port 6 LED Drivers 1-3.
These pins drive LED indicators for Port 6. Each LED can
display one of several available status conditions as
selected by the LED Configuration Register (refer to
LED7_1_L
LED7_2_L
LED7_3_L
B6
A6
D5
OD, TS,
SL, IP
Port 7 LED Drivers 1-3.
These pins drive LED indicators for Port 7. Each LED can
display one of several available status conditions as
selected by the LED Configuration Register (refer to
Power Supply Signal Descriptions
AVCC
D12, E12,
F12, G12,
H12, J12,
K12, L12,
–
Analog Power Supply.
+2.5 V supply for analog circuits.
Table 39
BGA15 Signal Descriptions (Sheet 6 of 7)
Symbol
BGA15 Ball
Designation
Type
Signal Description
1. Type Column Coding: I = Input, O = Output, OD = Open Drain output, ST = Schmitt Triggered input, TS =
Three-State-able output, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-
Down.
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).