TLK2226_09 Datasheet, PDF (7/52 Pages) Texas Instruments – 6 PORT GIGABIT ETHERNET TRANSCEIVER

TLK2226
www.ti.com
SLLS689D – JANUARY 2006 – REVISED DECEMBER 2006
SERIAL TRANSMITTER/RECEIVER CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
t_r, t_f
Differential output signal rise, ^{RL = 50 Ω, CL = 5 pF, See Figure 3}
fall time (20% to 80%)
R_L = 50 Ω, C_L = 5 pF, See Figure 3 For Half
amplitude condition without Pre-Emphasis
J_TOL
Jitter Tolerance, Total Jitter Zero crossing, See Figure 6
at Serial Input
J_DR
Serial Input Deterministic
Jitter
Zero crossing, See Figure 6
J_T
Serial Output Total Jitter
Alternating disparity
K28.5 1.25 Gbps
J_D
Serial Output Deterministic Alternating disparity K28.5 1,25 Gbps
Jitter
R_(LATENCY)
T_(LATENCY)
From MDI /T/ to RGMII
RX_DV
de-assert
From the assertion of TX_EN
to MDI output of /S/
1000Base-X Operating Mode
R_(LATENCY)
MDI Input to RX_DV
de-assert
T_(LATENCY)
TX_EN sampled to MDI
output
100Base-FX Operating Mode
MIN
TYP
150
165
MAX
220
260
UNIT
ps
ps
0.75 UI⁽¹⁾
0.462 UI
0.15
0.24 UI
0.10 UI
192 Bits
136 Bits
32 Bits
14 Bits
(1) Unit Interval = one serial bit time (min 800 ps)
V_OD(p)
V_OD(d)
V_CMT
V_OD(pd) V_OD(pp)
V_OD(d)
t_r , t_f
bit
V_OD(p)
time
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Figure 3. Differential and Common-Mode Output Voltage Definitions}
+1000
+550
0
Transmit
ÎÎÎÎÎÎ _−550
ÎÎÎÎÎÎ _−1000
ÎÎÎÎÎÎ _{.14 .34}
.66 .86 1.0
ÎÎÎÎÎÎ ^{Normalized Time}
Figure 4. Transmit Template
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