參數(shù)資料
型號(hào): CPS1087
英文描述: Analog IC
中文描述: 模擬IC
文件頁(yè)數(shù): 56/64頁(yè)
文件大小: 870K
代理商: CPS1087
CSP1027 Voice Band Codec for
Cellular Handset and Modem Applications
Data Sheet
January 2002
Agere Systems Inc.
56
11 Timing Characteristics and Requirements
(continued)
11.1 Clock Generation
* OSCEN = 0 shown.
CDIV0 = 2, CDIV1 = 1 configuration shown (see Table 8 on page 27).
CDIV2 = 4 option shown (see Table 8 on page 27).
Figure 39. Clock Timing Diagram
* Device is fully static, t1 is tested at 500 ns.
Table 24. Timing Requirements for Input Clock
Abbreviated
Reference
t1
Clock In Period (high to high)
t2
Clock In Low Time (low to change)
t3
Clock In High Time (high to change)
Parameter
5.0 V
3.3 V
3.0 V
Unit
Min
25
11
11
Max
—*
Min
42
19
19
Max
—*
Min
60
27
27
Max
—*
ns
ns
ns
Table 25. Timing Characteristics for Output Clocks
Abbreviated
Reference
t7
Clock Out 1 Delay (valid to valid)
t8
Clock Out 2 Delay (valid to valid)
Parameter
5.0 V
3.3 V
Min
3.0 V
Unit
Min
Max
30
20
Max
54
40
Min
Max
66
50
ns
ns
CLK
*
V
IH–
V
IL–
t1
t3
t2
t7
t8
CKO1
V
OH–
V
OL–
CKO2
V
OH–
V
OL–
5-7618 (F)
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