XIO2221
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SCPS216A–JULY 2009–REVISED FEBRAURY 2010
11.9 Electrical Characteristics Over Recommended Operating Conditions PHY Port
Receiver
PARAMETER
TEST CONDITIONS
MIN TYP
MAX UNIT
4
7
k
ZID
ZIC
Differential impedance
Drivers disabled
Drivers disabled
4
pF
k
20
Common-mode impedance
24
30
pF
mV
VTH-R
Receiver input threshold voltage
Drivers disabled
Drivers disabled
30
Cable bias detect threshold. TPBx
cable inputs
VTH-CB
0.6
1
168
89
V
Positive arbitration comparator
threshold voltage
VTH+
VTH
Drivers disabled
Drivers disabled
89
mV
mV
Negative arbitration comparator
threshold voltage
168
VTH-SP200 Speed signal threshold
VTH-SP400 Speed signal threshold
TPBIAS-TPA common mode voltage, drivers disabled
TPBIAS-TPA common mode voltage, drivers disabled
49
131
396
mV
mV
314
11.10 Jitter/Skew Characteristics for 1394a PHY Port Receiver
PARAMETER
MIN
TYP
MAX UNIT
TPA, TPB cable inputs, S100 operation
1.08
1394a Receive input jitter
1394a Receive input skew
TPA, TPB cable inputs, S200 operation
0.5
0.315
0.8
ns
ns
TPA, TPB cable inputs, S400 operation
Between TPA and TPB cable inputs, S100 operation
Between TPA and TPB cable inputs, S200 operation
Between TPA and TPB cable inputs, S400 operation
0.55
0.5
11.11 Operating, Timing, and Switching Characteristics of XI
PARAMETER
MIN
TYP
MAX
UNIT
V
VIH
VIL
High-level input voltage
Low-level input voltage
Input clock frequency
Input clock frequency tolerance
Input slew rate
0.63 VDDA_33
0.33 VDDA_33
V
98.304
MHz
ppm
V/ns
<100
4
0.2
Input clock duty cycle
40%
60%
11.12 Electrical Characteristics Over Recommended Operating Conditions
(1394a Miscellaneous I/O)
PARAMETER
Power status threshold CPS input(1)
TPBIAS output voltage
TEST CONDITIONS
400-kΩ resistor(1)
At rated IO current
MIN
MAX
7.5
UNIT
V
VTH
VO
IO
4.7
1.665
5.6
2.015
1.3
V
TPBIAS output current
mA
(1) Measure at cable power side of resistor
12 Glossary
ACRONYM
BIST
DEFINITION
Built-in self test
ECRC
End-to-end cyclic redundancy code
Copyright © 2009–2010, Texas Instruments Incorporated
Glossary
193
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