參數(shù)資料
型號: TP3420A
廠商: National Semiconductor Corporation
英文描述: ISDN S/T Interface Device
中文描述: 綜合業(yè)務數(shù)字網(wǎng)的S / T接口設備
文件頁數(shù): 25/32頁
文件大小: 524K
代理商: TP3420A
Timing Characteristics
Symbol
MCLK SYSTEM CLOCK (See
Figure 5
)
F
MCK
Master Clock Frequency
Master Clock Tolerance
MCLK/XTAL Input Clock Jitter
t
MH
,
Clock Pulse Width
t
ML
Hi & Low for MCLK
t
MR
,
Rise and Fall Time
t
MF
of MCLK
MICROWIRE CONTROL INTERFACE (See
Figure 5
)
t
CH
CCLK High Duration
t
CL
CCLK Low Duration
t
SIC
Setup Time, CI
Valid to CCLK Edge
t
HCI
Hold Time, CCLK
High to CI Invalid
t
DCSO
Delay Time from CS
Low to CO Valid
t
DCO
Delay Time from CCLK Edge
to CO Data Valid
t
DCSZ
Delay Time from CS High
to CO TRI-STATE
t
SCSC1
Setup Time, from CS Low to
CCLK Edge High
t
HCSC1
Hold Time, CS High from
CCLK Edge High
t
HCSC2
Hold Time, CS Low from
CCLK Edge High
t
SCSC2
Setup Time, CS High
to CCLK Edge High
t
CSH
Duration of CS High
t
DCI
Delay Time CS Low to
INT High-impedance
DIGITAL SYSTEM INTERFACE (See
Figure 9
)
F
BCK
Bit Clock Frequency
t
BH
,
Clock Pulse Width
t
BL
Hi & Low for BCLK
t
BR
,
Rise and Fall Time
t
BF
of BCLK
t
FSa/b
Frame Sync Frequency
t
SBC
Set up Time, B
x
Valid
to BCLK Low
t
HCB
Hold Time, B
x
Valid
from BCLK Low
t
DCD
Delay Time, BCLK Transition
to DTCK Transition
t
SDT
Setup Time, TxD Valid to
BCLK Low
t
HDT
Hold Time, BCLK Low to TxD
Invalid
Parameter
Conditions
Min
Typ
Max
Units
15.36
MHz
ppm
ns pk-pk
ns
100
+100
50
External Clock Source
V
IH
= V
CC
0.5V
V
IL
= 0.5V
Used as a
Logic Input
20
10
ns
50
50
30
ns
ns
ns
20
ns
Bit C7 only
50
ns
50
ns
30
ns
30
ns
40
ns
50
ns
50
ns
1
μs
ns
250
256
60
4096
kHz
ns
V
IH
= 2.2V
V
IL
= 0.7V
15
ns
8
kHz
ns
All Modes
30
All Modes
20
ns
TEM, DCKE Mode
0
40
ns
TEM, DCKE Mode
30
ns
TEM, DCKE Mode
20
ns
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