參數(shù)資料
型號: DSPA56371
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
元件分類: 數(shù)字信號處理
英文描述: SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs
中文描述: SigmaDSP的28-/56-Bit音頻處理器雙ADC和4個DAC
文件頁數(shù): 64/124頁
文件大?。?/td> 1752K
代理商: DSPA56371
44
DSP56371 Technical Data
Freescale Semiconductor
Serial Host Interface (SHI) I2C Protocol Timing
13
Serial Host Interface (SHI) I2C Protocol Timing
Table 21. SHI I2C Protocol Timing
Standard I2C*
No.
Characteristics1
Symbol/
Expression
Standard
Fast-Mode
Unit
Min
Max
Min
Max
44
SCL clock frequency
FSCL
—100
—400
kHz
44
SCL clock cycle
TSCL
10
2.5
s
45
Bus free time
TBUF
4.7
1.3
s
46
Start condition set-up time
TSUSTA
4.7
0.6
s
47
Start condition hold time
THD;STA
4.0
0.6
s
48
SCL low period
TLOW
4.7
1.3
s
49
SCL high period
THIGH
4.0
1.3
s
50
SCL and SDA rise time
TR
—5—5
ns
51
SCL and SDA fall time
TF
—5—5
ns
52
Data set-up time
TSU;DAT
250
100
ns
53
Data hold time
THD;DAT
0.0
0.0
0.9
s
54
DSP clock frequency
FOSC
10.6
28.5
MHz
55
SCL low to data out valid
TVD;DAT
—3.4
—0.9
s
56
Stop condition setup time
TSU;STO
4.0
0.6
s
57
HREQ in deassertion to last SCL edge (HREQ
in set-up time)
tSU;RQI
0.0
0.0
ns
58
First SCL sampling edge to HREQ output
deassertion
TNG;RQO
4
× T
C + 30
————
ns
59
Last SCL edge to HREQ output not deasserted
TAS;RQO
2
× T
C + 30
50
50
ns
60
HREQ in assertion to first SCL edge
TAS;RQI
0.5
× T
I2CCP
-0.5
× T
C - 21
4327
927
ns
61
First SCL edge to HREQ in not asserted
(HREQ in hold time.)
tHO;RQI
0.0
0.0
ns
Note:
1. VCORE_VDD = 1.2 5 ± 0.05 V; TJ = –40°C to 115°C for 150 MHz; TJ = 0°C to 100°C for 181 MHz; CL = 50 pF
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