參數(shù)資料
型號(hào): AM79D2251VC
廠商: ADVANCED MICRO DEVICES INC
元件分類(lèi): 編解碼器
英文描述: Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)
中文描述: PCM CODEC, PQFP44
封裝: PLASTIC, TQFP-44
文件頁(yè)數(shù): 26/35頁(yè)
文件大?。?/td> 410K
代理商: AM79D2251VC
26
Am79D2251
SWITCHING CHARACTERISTICS
PCM Switching Characteristics
Figure 14. PCM Switching Characteristics
VCC = 3.3 V +5%, AGND = DGND = 0 V
Microprocessor Interface
Min and max values are valid for all digital outputs with a 100 pF load, except DIO,DXA, INTL, and
TSCA which are valid with 150 pF loads.
No.
1
Symbol
t
DCY
t
DCH
t
DCL
t
DCR
t
DCF
t
ICSS
Parameter
Min
122
Typ
Max
Unit
Note
Data clock period
ns
2
Data clock HIGH pulse width
48
1
3
Data clock LOW pulse width
48
1
4
Rise time of clock
15
5
Fall time of clock
15
6
Chip select setup time, Input
mode
Chip select hold time, Input mode
30
t
DCY
10
7
t
ICSH
t
ICSL
0
t
DCH
20
8
Chip select pulse width, Input
mode
Chip select off time, Input mode
8t
DCY
9
t
ICSO
t
IDS
t
IDH
1, 6
10
Input data setup time
25
5
11
Input data hold time
30
12
13
t
OCSS
Chip select setup time, Output
mode
Chip select hold time, Output
mode
Chip select pulse width, Output
mode
Chip select off time, output Mode
30
t
DCY
10
ns
14
t
OCSH
t
DCH
20
15
t
OCSL
8t
DCY
16
t
OCSO
t
ODD
t
ODH
t
ODOF
t
ODC
t
RST
1, 6
17
Output data turn on delay
50
18
Output data hold time
3
19
Output data turn off delay
50
20
Output data valid
0
50
21
Reset pulse width
50
μs
TBD
TBD
TEST
POINTS
TBD
TBD
TBD
TBD
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