參數資料
型號： DTMFDECODER-RD
廠商： Silicon Laboratories Inc
文件頁數： 32/178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： 否
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
127
C8051F300/1/2/3/4/5
13.6. SMBus Status Decoding
The current SMBus status can be easily decoded using the SMB0CN register. In the table below, STATUS
VECTOR refers to the four upper bits of SMB0CN: MASTER, TXMODE, STA, and STO. Note that the
shown response options are only the typical responses; application-specific procedures are allowed as
long as they conform with the SMBus specification. Highlighted responses are allowed but do not conform
to the SMBus specification.
Table 13.4. SMBus Status Decoding
M
ode
Values Read
Current SMbus State
Typical Response Options
Values
Written
St
a
tu
s
Ve
c
to
r
AC
KRQ
ARB
LOST
AC
K
ST
A
ST
O
AC
K
M
a
st
er
T
ran
s
m
it
te
r
1110
0
X A master START was generated. Load slave address + R/W
into SMB0DAT.
00
X
1100
0
0 A master data or address byte
was transmitted; NACK received.
Set STA to restart transfer.
10
X
Abort transfer.
01
X
0
1 A master data or address byte
was transmitted; ACK received.
Load next data byte into
SMB0DAT
00
X
End transfer with STOP
01
X
End transfer with STOP and
start another transfer.
11
X
Send repeated START
10
X
Switch to Master Receiver
Mode (clear SI without writ-
ing new data to SMB0DAT).
00
X
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