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| 型號： | PCM1850 |
| 英文描述： | 24-BIT, 96-kHz STEREO A/D CONVERTER WITH 6 X 2-CHANNEL MUX AND PGA |
| 中文描述： | 24位，96千赫立體聲A / D轉(zhuǎn)換器6 × 2通道的MUX和PGA |
| 文件頁數(shù)： | 23/30頁 |
| 文件大小： | 370K |
| 代理商： | PCM1850 |
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PCM1850
PCM1851
SLES108
MARCH 2004
www.ti.com
23
CONTROL INTERFACE TIMING REQUIREMENTS (PCM1850)
Figure 29 shows a detailed timing diagram for the serial control interface of the PCM1850. These timing parameters are
critical for proper control port operation.
t
(MCH)
1.4 V
MS
t
(MSS)
LSB
1.4 V
1.4 V
t
(MCL)
t
(MHH)
t
(MSH)
t
(MCY)
t
(MDH)
t
(MDS)
MC
MD
SYMBOL
PARAMETERS
MIN
MAX
UNITS
t
(MCY)
t
(MCL)
t
(MCH)
t
(MHH)
t
(MSS)
t
(MSH)
t
(MDH)
t
(MDS)
MC pulse cycle time
100
ns
MC LOW level time
40
ns
MC HIGH level time
40
ns
MS HIGH level time
80
ns
MS falling edge to MC rising edge
MS hold time
(1)
15
ns
15
ns
MD hold time
15
ns
MD setup time
15
ns
(1)
MC rising edge for LSB to MS rising edge.
Figure 29. PCM1850 Control Interface Timing
I
2
C SERIAL CONTROL PORT FOR MODE CONTROL (PCM1851)
The user-programmable built-in function of the PCM1851 can be controlled through the I
2
C-format serial control port, SDA
(pin 32) and SCL (pin 31). The PCM1851 supports the I
2
C serial bus and the data transmission protocol for standard mode
as a slave device. This protocol is explained in the I
2
C specification 2.0.
Slave Address
MSB
LSB
1
0
0
1
0
1
ADR
R/nW
The PCM1851 has 7 bits for its own slave address. The first six bits (MSBs) of the slave address are factory preset to
100101. The last bit of the address byte is the device select bit, which can be user-defined by the ADR pin (pin 30). A
maximum of two PCM1851s can be connected on the same bus at one time. Each PCM1851 responds when it receives
its own slave address.
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| PCM-1850-06 | 制造商:Distributed By MCM 功能描述:6 ft DB9 Serial Cable Female to Female |
| PCM-1850-10 | 制造商:Distributed By MCM 功能描述:10 ft DB9 Serial Cable Female to Female |
| PCM1850APJT | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit Audio ADC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
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| PCM1850APJTR | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit Audio ADC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
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