Texas Instruments THUNDERSWITCH II TNETX4090 - Manual (Page 17)

TNETX4090
ThunderSWITCH II

9-PORT 100-/1000-MBIT/S ETHERNET

SWITCH
SPWS044E – DECEMBER 1997 – REVISED AUGUST 1999
17
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
Terminal Functions (Continued)
LED interface
TERMINAL
I/O
INTERNAL
DESCRIPTION
NAME NO.
I/O
RESISTOR
DESCRIPTION
LED_CLK AD19 O None LED clock. Serial shift clock for the LED status data.
LED_DATA AE19 O None LED data. Serial LED status data.
100-/1000-Mbit/s port PCS LED interface
TERMINAL
I/O
INTERNAL
DESCRIPTION
NAME NO.
I/O
RESISTOR
DESCRIPTION
L08_DPLX AE18 None
Duplex LED. When in PMA mode, this terminal is low if the port is configured for full-duplex
operation. It is high at all other times.
power supply
TERMINAL
DESCRIPTION
NAME NO.
DESCRIPTION
GND
A1, A2, A13, A14, A25, A26,
AF13, AF14, B1, B3, B24,
B26, C2, C25, N1, N26, P1,
P25, P26, R23, R24, R26,
T24, U23, W23, W24, W25,
W26, Y23, Y25, AA23, AA25,
AB25, AD2, AD25, AE1, AE3,
AE24, AE26, AF1, AF2,
AF25, AF26
Ground. The 0-V reference for the TNETX4090.
GNDa U24 Ground. The 0-V reference for the analog functions within the rambus ASIC cell (RAC).
VDD(2.5)
B2, B25, C3, C24, D4, D9,
D14, D18, D23, J4, J23, N4,
P23, V4, V23, AC4, AC9,
AC13, AC18, AC23, AD3,
AD24, AE2, AE25
2.5-V supply voltage. Power for the core.
VDD(3.3)
D8, D13, D17, H23, K4, P4,
W4, AC10, AC14, AC19
3.3-V supply voltage. Power for the I/Os.
VDDa(2.5) T23 2.5-V supply voltage. Power for the analog functions within the RAC.