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PCM1795DB データシート(PDF) 9 Page - Texas Instruments

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部品番号 PCM1795DB
部品情報  32-Bit, 192-kHz Sampling, Advanced Segment, Stereo Audio Digital-to-Analog Converter
PDF  58 Pages
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

PCM1795DB データシート(HTML) 9 Page - Texas Instruments

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TIMING CHARACTERISTICS
SDA
SCL
t
(BUF)
t
(D-SU)
t
(D-HD)
Start
t
(LOW)
t
(S-HD)
t
(SCL-F)
t
(SCL-R)
t
(HI)
RepeatedStart
t
(RS-SU)
t
(RS-HD)
t
(SDA-F)
t
(SDA-R)
t
(P-SU)
Stop
t
(SP)
TIMING REQUIREMENTS
PCM1795
www.ti.com ........................................................................................................................................................................................................ SLES248 – MAY 2009
Figure 1. Timing Definition on the I2C Bus
PARAMETER
CONDITIONS
MIN
MAX
UNIT
Standard
100
kHz
f(SCL)
SCL clock frequency
Fast
400
kHz
Standard
4.7
µs
t(BUF)
Bus free time between stop and start conditions
Fast
1.3
µs
Standard
4.7
µs
t(LOW)
Low period of the SCL clock
Fast
1.3
µs
Standard
4
µs
t(HI)
High period of the SCL clock
Fast
600
ns
Standard
4.7
µs
t(RS-SU)
Setup time for (repeated) start condition
Fast
600
ns
t(S-HD)
Standard
4
µs
Hold time for (repeated) start condition
t(RS-HD)
Fast
600
ns
Standard
250
ns
t(D-SU)
Data setup time
Fast
100
ns
Standard
0
900
ns
t(D-HD)
Data hold time
Fast
0
900
ns
Standard
20 + 0.1 CB
1000
ns
t(SCL-R)
Rise time of SCL signal
Fast
20 + 0.1 CB
300
ns
Standard
20 + 0.1 CB
1000
ns
Rise time of SCL signal after a repeated start condition
t(SCL-R1)
and after an acknowledge bit
Fast
20 + 0.1 CB
300
ns
Standard
20 + 0.1 CB
1000
ns
t(SCL-F)
Fall time of SCL signal
Fast
20 + 0.1 CB
300
ns
Standard
20 + 0.1 CB
1000
ns
t(SDA-R)
Rise time of SDA signal
Fast
20 + 0.1 CB
300
ns
Standard
20 + 0.1 CB
1000
ns
t(SDA-F)
Fall time of SDA signal
Fast
20 + 0.1 CB
300
ns
Standard
4
µs
t(P-SU)
Setup time for stop condition
Fast
600
ns
C(B)
Capacitive load for SDA and SCL line
400
pF
t(SP)
Pulse duration of suppressed spike
Fast
50
ns
Noise margin at high level for each connected device
VNH
0.2 VDD
V
(including hysteresis)
Copyright © 2009, Texas Instruments Incorporated
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Product Folder Link(s): PCM1795



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