XRS10L120_09 Datasheet, PDF (17/36 Pages) Exar Corporation – SERIAL ATA II: PORT MULTIPLIER

EXSTOR XRS10L120
REV. 1.06
SERIAL ATA II: PORT MULTIPLIER
4.2 CMOS Interface
AC and DC specifications for the CMOS inputs and outputs are listed in Table 4. Since all these signals are
asynchronous, there are no setup or hold times defined. The CMOS pins are defined in the General Control
and Configuration portion of Table 1 in Section 3, "Pin Descriptions".
TABLE 4: CMOS I/O SPECIFICATIONS
NAME
DESCRIPTION
MIN
NOM
MAX
UNITS
t_DR/t_DF,CMOS CMOS input signal rise/fall times (20% - 80%)
0.2
-
5
ns
t_QR/t_QF,CMOS1 CMOS output signal rise/fall times (20% - 80%)
0.2
-
V_IL,CMOS CMOS input low voltage
-0.3
0
5
ns
0.8
V
V_IH,CMOS CMOS input high voltage
1.7
3.3
3.6
V
V_OL,CMOS
V_PULLUP
CMOS output low voltage
Open Drain Pull-up Voltage
-0.3
-
2.3
0.4
V
3.6
V
I_OL,CMOS Output current for VOL = 0.4V
10
-
20
mA
dI_OL/dt,_CMOS Output current rate of change
-10
-
10
mA/ns
L_I,CMOS
CMOS I/O inductance
-
-
8
nH
C_I,CMOS CMOS I/O capacitance
-
-
5
pF
I_LEAKAGE2 CMOS I/O Leakage Current
150
uA
NOTE: .1. This value is measured driving a load of 20pF.
NOTE: .2. This values is measured at 2.5 VDC.
4.3 MDIO Interface
The Management Data Input/Output (MDIO) port complies with Clause 45 of the IEEE 802.3ae specification. A
representative MDIO driver/receiver is shown in Figure 15. MDIO uses an open drain driver with a pullup
resistor.
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