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參數(shù)資料
| 型號： | T8532 |
| 元件分類： | Codec |
| 英文描述： | T8502 and T8503 Dual PCM Codecs with Filters |
| 中文描述： | T8502和T8503雙的PCM編解碼器與濾波器 |
| 文件頁數(shù)： | 31/48頁 |
| 文件大小： | 999K |
| 代理商： | T8532 |
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Lucent Technologies Inc.
31
Preliminary Data Sheet
November 2000
Codec Chip Set
T8531/T8532 Multichannel Programmable
Timing Characteristics
(continued)
Table 17. Serial Control Port Timing
(See Figure 10.)
5-4232a (F)
Notes:
UPDI and UPCS change at the rising edge of UPCK by the microprocessor and are sampled at the falling edge of UPCK by the DSP.
UPDO changes at the rising edge of UPCK by the DSP and is sampled at the falling edge of UPCK by the microprocessor.
Figure 10. Timing Diagram for Microprocessor Write/Read to/from the DSP on the Control Interface
Symbol
tCSHLSET
tCSLHHOD
tUPDIST
tUPDIHD
tUPDODEL
tUPDOHZDL
tCKCSH
Parameter
Test Conditions
—
—
—
—
C
L
= 50 pF
C
L
= 50 pF
Min
25
20 ns
25
20
—
—
Typ
—
—
—
—
—
—
Max
—
Unit
ns
—
ns
ns
ns
ns
UPCS to UPCK Setup
UPCS to UPCK Hold
UPDI to UPCK Setup
UPDI to UPCK Hold
UPCK to UPDO Delay
UPCS to UPDO High-Z
Duration of UPCK and UPCS High:
Write Cycle
Read Cycle
Duration of UPCK and UPCS High
UPCK Period/2
—
—
42
34
—
—
—
1
9
9
—
—
—
—
—
—
μ
s
μ
s
μ
s
tCKCSH1
tCSHLSET
tCSLHHOD
tUPDOHZDL
0
13—1
14
15
0
13—1
14
15
tUPDIHD
DATA (16 bits)
tUPDODEL
0
1
13—2
14
15
tUPDIST
tUPDIHD
ADDRESS (16 bits)
UPDI
UPDO
UPCS
UPCK
HIGH-Z STATE
DATA (16 bits)
tCKCSH
ADDRESS
tCKCSH1
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