Le79228
Data Sheet
Microprocessor Interface
Min and max values are valid for all digital outputs with a 150 pF load. Pictorial definitions for these parameters can be found in
Figure 14, on page 23 and Figure 15, on page 24.
No.
1
Symbol
tDCY
Parameter
Data clock period
Min
122
48
48
—
Typ
—
Max
—
Unit
Note
tDCH
tDCL
tDCR
tDCF
2
Data clock HIGH pulse width
Data clock LOW pulse width
Rise time of clock
—
—
1.
1.
3
—
—
4
—
25
5
Fall time of clock
—
—
25
tICSS
tICSH
tICSL
tICSO
tIDS
tDCY–10
tDCY–20
6
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
30
0
—
7
—
8tDCY
8
—
—
7.
9
2000
25
30
30
0
—
—
—
1., 6.
tDCY–10
tDCY–10
tDCY–10
tDCH–20
10
11
13
14
15
16
17
18
19
20
ns
tIDH
Input data hold time
—
tOCSS
tOCSH
tOCSL
tOCSO
tODD
tODH
tODOF
tODC
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
—
—
8tDCY
—
—
—
35
—
35
35
2000
—
—
—
—
—
—
1., 6.
5.
3
Output data turn off delay
Output data valid
3
3
PCM Interface
Min and max values are valid for TSCA and TSCB with an 150 pF load and are valid for DXA and DXB with an 80 pF load. Pictorial
definitions for these parameters can be found on Figure 16, on page 24 and Figure 17, on page 25.
No.
22
23
24
25
26
27
Symbol
tPCY
Parameter
PCM clock period
Min.
122
48
Typ
—
Max
7812.5
—
Unit
Note
2., 9.
tPCH
tPCL
tPCF
tPCR
tFSS
PCM clock HIGH pulse width
PCM clock LOW pulse width
Fall time of clock
—
48
—
—
—
—
15
Rise time of clock
—
—
15
tPCY–30
FS setup time
30
—
125000-
3tPCY--30
tFSH
28
FS hold time
50
—
ns
tTSD
tTSO
tDXD
tDXH
tDXZ
tDRS
tDRH
tFST
29
30
31
32
33
34
35
36
5
5
—
—
—
—
—
—
—
—
40
3.
4.
Delay to TSCX valid
40
40
Delay to TSCX off
PCM data output delay
5
PCM data output hold time
PCM data output delay to high-Z
PCM data input setup time
PCM data input hold time
PCM or frame sync jitter time
5
40
10
25
5
40
4.
tPCY–10
tPCY–20
–97
97
21
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
