參數資料
型號: DTMFDECODER-RD
廠商: Silicon Laboratories Inc
文件頁數: 30/178頁
文件大?。?/td> 0K
描述: KIT REF DESIGN DTMF DECODER
應用說明: DTMF Decoder Ref Design AppNote
標準包裝: 1
主要目的: 電信,DTMF 解碼器
嵌入式:
已用 IC / 零件: C8051F300
主要屬性: 8kHz 采樣速率模數轉換器
次要屬性: 16 個 Goertzel 濾波器
已供物品: 板,軟件
產品目錄頁面: 627 (CN2011-ZH PDF)
相關產品: 336-1535-5-ND - IC 8051 MCU 8K FLASH 14-SOIC
C8051F300-GMR-ND - IC 8051 MCU 8K FLASH 11QFN
336-1245-ND - IC 8051 MCU 8K FLASH 11QFN
其它名稱: 336-1283
Rev. 2.9
125
C8051F300/1/2/3/4/5
13.5.3. Slave Receiver Mode
Serial data is received on SDA and the clock is received on SCL. When slave events are enabled (INH =
0), the interface enters Slave Receiver Mode when a START followed by a slave address and direction bit
(WRITE in this case) is received. Upon entering Slave Receiver Mode, an interrupt is generated and the
ACKRQ bit is set. Software responds to the received slave address with an ACK, or ignores the received
slave address with a NACK. If the received slave address is ignored, slave interrupts will be inhibited until
the next START is detected. If the received slave address is acknowledged, zero or more data bytes are
received. Software must write the ACK bit after each received byte to ACK or NACK the received byte. The
interface exits Slave Receiver Mode after receiving a STOP. Note that the interface will switch to Slave
Transmitter Mode if SMB0DAT is written while an active Slave Receiver; see Section 13.5.4 for details on
this procedure. Figure 13.7 shows a typical Slave Receiver sequence. Two received data bytes are shown,
though any number of bytes may be received. Notice that the ‘data byte transferred’ interrupts occur
before the ACK cycle in this mode.
P
W
SLA
S
Data Byte
A
S = START
P = STOP
A = ACK
R = READ
SLA = Slave Address
Received by SMBus
Interface
Transmitted by
SMBus Interface
Interrupt
Figure 13.7. Typical Slave Receiver Sequence
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