參數(shù)資料
型號(hào): SAA7712
廠(chǎng)商: NXP Semiconductors N.V.
英文描述: Sound effects DSP
中文描述: DSP的音效
文件頁(yè)數(shù): 35/44頁(yè)
文件大?。?/td> 178K
代理商: SAA7712
1999 Aug 05
35
Philips Semiconductors
Preliminary specification
Sound effects DSP
SAA7712H
16 I
2
C-BUS TIMING CHARACTERISTICS
Timing of the I
2
C-bus (see Fig.18); all values referred to V
IH
and V
IL
(see Section 12).
Note
1.
C
b
is the bus line capacitance in pF.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
f
SCL
t
BUF
SCL clock frequency
bus free time between a STOP and
START condition
hold time (repeated) START
condition; after this period, the first
clock pulse is generated
LOW period of the SCL clock
HIGH period of the SCL clock
set-up time for a repeated START
condition
data hold time
data set-up time
0
1.3
400
kHz
μ
s
t
HD;STA
0.6
μ
s
t
LOW
t
HIGH
t
SU;STA
1.3
0.6
0.6
μ
s
μ
s
μ
s
t
HD;DAT
t
SU;DAT
0
100
0.9
μ
s
ns
for standard mode I
2
C-bus
system t
SU;DAT
> 250 ns
f
SCL
= 400 kHz
f
SCL
= 100 kHz
t
r
rise time of both SDA and SCL
signals
20 + 0.1C
b(1)
20 + 0.1C
b(1)
20 + 0.1C
b(1)
300
1000
300
ns
ns
ns
t
f
fall time of both SDA and SCL
signals
set-up time for STOP condition
capacitive load for each bus line
maximum pulse width for spike
suppression
t
SU;STO
C
b
t
SP
0.6
400
50
μ
s
pF
ns
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