Data Sheet

Pin Interface—Ethernet Controller I210
23
2.3 Signal Type Definition
SDP3 Y Y
Until Flash auto-
load done
Y
Might keep
state by Flash
control
N
DEV_OFF_N Y N N
PU optional if
NC-SI is not
used.
SRDS_SIG_DET Y N N
Must be
connected on
board
SFP_I2C_CLK Y Y
Until Flash auto-
load done or if
I2C disable set in
Flash
YY if I2C
SFP_I2C_DATA Y Y
Until Flash auto-
load done or if
I2C disable set in
Flash
YY
LED0 Y N N HiZ
LED1 Y N N HiZ
LED2 Y N N HiZ
JTAG_CLK N N N Y
6
JTAG_TDI N N N Y
JTAG_TDO N N N Y
6
JTAG_TMS N N N Y
6
1. Power up - LAN_PWR_GOOD = 0b
2. Refer to Section 5.2.6 for description of disable state.
3. 10 KΩ to 100 KΩ pull up can be used.
4. When pulled up, Flash security features are enabled.
5. If NC-SI hardware arbitration is disabled via the NC-SI ARB Enable Flash bit (refer to Section 6.2.22), NCSI_ARB_IN pin is pulled-
up internally.
6. These pins can be pulled up or pulled down (design dependent) when no clock device is connected to it.
In Input is a standard input-only signal.
Out (O) Totem pole output is a standard active driver.
T/s Tri-State is a bi-directional, tri-state input/output pin.
S/t/s
Sustained tri-state is an active low tri-state signal owned and driven by one and only one agent
at a time. The agent that drives an s/t/s pin low must drive it high for at least one clock before
letting it float. A new agent cannot start driving an s/t/s signal any sooner than one clock after
the previous owner tri-states it.
O/d Open drain enables multiple devices to share as a wire-OR.
A-in Analog input signals.
A-out Analog output signals.
B Input bias.
NCSI_in NCSI input signal.
NCSI-out NCSI output signal.
Table 2-1. Pull-Up/Pull-Down Resistors (Continued)
Signal Name Power Up
1
Active Disable
2
External
PU Comments PU Comments PU Comments