參數(shù)資料
型號: TMS320DM355_07
廠商: Texas Instruments, Inc.
英文描述: Digital Media System-on-Chip (DMSoC)
中文描述: 數(shù)字媒體系統(tǒng)芯片(DMSoC)
文件頁數(shù): 94/158頁
文件大?。?/td> 1319K
代理商: TMS320DM355_07
www.ti.com
P
5
DM355 Peripheral Information and Electrical Specifications
5.1
Parameter Information Device-Specific Information
Transmission Line
4.0 pF
1.85 pF
Z0 = 50
(see note)
Tester Pin Electronics
Data Sheet Timing Reference Point
Output
Under
Test
42
3.5 nH
Device Pin
(see note)
5.1.1
Signal Transition Levels
V
ref
V
ref
= V
IL
MAX (or V
OL
MAX)
V
ref
= V
IH
MIN (or V
OH
MIN)
TMS320DM355
Digital Media System-on-Chip (DMSoC)
SPRS463B–SEPTEMBER 2007–REVISED OCTOBER 2007
A.
The data sheet provides timing at the device pin. For output timing analysis, the tester pin electronics and its
transmission line effects must be taken into account. A transmission line with a delay of 2 ns or longer can be used to
produce the desired transmission line effect. The transmission line is intended as a load only. It is not necessary to
add
or
subtract
the
transmission
line
delay
(2
Input requirements in this data sheet are tested with an input slew rate of < 4 Volts per nanosecond (4 V/ns) at the
device pin.
ns
or
longer)
from
the
data
sheet
timings.
Figure 5-1. Test Load Circuit for AC Timing Measurements
The load capacitance value stated is only for characterization and measurement of AC timing signals. This
load capacitance value does not indicate the maximum load the device is capable of driving.
All input and output timing parameters are referenced to V
ref
for both "0" and "1" logic levels. For 3.3 V I/O,
V
ref
= 1.65 V. For 1.8 V I/O, V
ref
= 0.9 V.
Figure 5-2. Input and Output Voltage Reference Levels for AC Timing Measurements
All rise and fall transition timing parameters are referenced to V
IL
MAX and V
IH
MIN for input clocks,
V
OL
MAX and V
OH
MIN for output clocks.
Figure 5-3. Rise and Fall Transition Time Voltage Reference Levels
94
DM355 Peripheral Information and Electrical Specifications
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