TLK3131_15 Datasheet, PDF (68/102 Pages) Texas Instruments – Single Channel Multi-Rate Transceiver

TLK3131
SLLS957A – DECEMBER 2008 – REVISED DECEMBER 2009
4.8 MDIO ELECTRICAL CHARACTERISTICS
PARAMETER
V_IH High-level input voltage VDDM = 2.5 V
CONDITION
V_IL Low-level input voltage VDDM = 2.5 V
V_IH High-level input voltage VDDM = 1.2 V
V_IL Low-level input voltage VDDM = 1.2 V
V_OL
Low Level Output
Voltage
VDDM = 2.5 V (I_OL = 100 μA)
VDDM = 1.2 V (I_OL = 100 μA)
V_OH High Level Output
Voltage
VDDM = 1.2/2.5 V (Open Drain Driver) Must be pulled up to VDDM
on the customer board.
I_IH, Low/High Input Current MDC Signal
I_IL
I_Z Low/High input current MDIO – Driver disabled
C_IN Input capacitance
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MIN NOM
2.1
–0.3
0.84
–0.3
0
0
–
–
MAX
VDDM +
0.3
0.7
VDDM +
0.3
0.36
0.2
0.2
–
UNIT
V
V
V
V
V
V
V
±20 μA
±50 μA
5 pF
4.9 HSTL SIGNALS (VDDQ = 1.5/1.8 V)
V_OH(dc)
V_OL(dc)
V_OH(ac)
V_OL(ac)
V_IH(dc)
PARAMETER
High-level output voltage
Low-level output voltage
High-level output voltage
Low-level output voltage
High-level DC input voltage
CONDITION
DC input, logic high
V_IL(dc)
V_IH(ac)
Low-level DC input voltage
High-level AC input voltage
DC input, logic low
AC input, logic high
V_IL(ac) Low-level AC input voltage
AC input, logic low
I_OH(dc)
I_OL(dc)
C_IN
Tacr
Tacs
High output current
Low output current
Input Capacitance
AC Test Condition
AC Test Condition
Rise Time (20 → 80%)
Signal Swing
MIN
VDDQ– 0.4
VDDQ– 0.5
VREF1/2 +
0.10
–0.30
VREF1/2 +
0.20
–0.30
–8
8
1
1
NOM
MAX
VDDQ
0.40
VDDQ
0.50
VDDQ + 0.3
VREF1/2 – 0.1
VDDQ+ 0.3
VREF1/2 –
0.20
4
1
1
1
1
UNIT
V
V
V
V
V
V
V
V
mA
mA
pF
ns
V
4.10 SERIAL TRANSMITTER/RECEIVER CHARACTERISTICS
V_OD(pp)
V_DE
V_CMT
PARAMETER
TX Output Differential Peak-to-Peak
voltage swing.
De-emphasis Amount = 0%.
See Figure 4-1
TX Output De-Emphasis (V_OD(dpp) =
V_{DE ×} Percentage of nominal V_OD(pp))
TX output common mode voltage
CONDITION
SWING = 000 (See Table 2-40)
SWING = 001 (See Table 2-40)
SWING = 010 (See Table 2-40)
SWING = 011 (See Table 2-40)
SWING = 100 (See Table 2-40)
SWING = 101 (See Table 2-40)
SWING = 110 (See Table 2-40)
SWING = 111 (See Table 2-40)
See Table 2-39 for details on de-emphasis settings.
See Figure 4-1.
MIN
80
210
425
530
635
900
1000
1080
4.7%
NOM
125
250
500
625
750
1000
1250
1375
AVDD – (0.25
×
V_OD(pp))
MAX
180
330
630
780
900
1200
1500
1650
72%
UNIT
mV_PP
mV
68
Electrical Specifications
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