am79d2251 Advanced Micro Devices, am79d2251 Datasheet - Page 26

• Manufacturer Part Number: am79d2251
• Description: Dual Intelligent Subscriber Line Audio-processing Circuit Islac
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS
PCM Switching Characteristics
Microprocessor Interface
26
VCC = 3.3 V +5%, AGND = DGND = 0 V
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.
TBD
TBD
No.
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
OCSS
OCSH
OCSO
t
t
ODOF
t
t
t
OCSL
t
ICSS
ICSH
ICSO
t
t
DCH
DCR
ICSL
ODD
ODH
ODC
DCY
DCL
DCF
RST
IDS
IDH
Figure 14. PCM Switching Characteristics
Data clock period
Data clock HIGH pulse width
Data clock LOW pulse width
Rise time of clock
Fall time of clock
Chip select setup time, Input
mode
Chip select hold time, Input mode
Chip select pulse width, Input
mode
Chip select off time, Input mode
Input data setup time
Input data hold time
Chip select setup time, Output
mode
Chip select hold time, Output
mode
Chip select pulse width, Output
mode
Chip select off time, output Mode
Output data turn on delay
Output data hold time
Output data turn off delay
Output data valid
Reset pulse width
TBD
TBD
Parameter
POINTS
TEST
Am79D2251
TBD
TBD
Min
122
48
48
30
25
30
30
50
0
3
0
8t
8t
Typ
DCY
DCY
t
t
t
t
DCH
DCH
DCY
DCY
Max
15
15
50
50
50
–10
–20
–10
–20
Unit
ns
ns
µs
Note
1, 6
1, 6
1
1
5