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CAP1214 датащи(PDF) 21 Page - SMSC Corporation

номер детали CAP1214
подробное описание детали  Multiple Channel Capacitive Touch Sensor and LED Driver
PDF  107 Pages
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производитель  SMSC [SMSC Corporation]
домашняя страница  http://www.smsc.com
Logo SMSC - SMSC Corporation

CAP1214 датащи(HTML) 21 Page - SMSC Corporation

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Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
SMSC CAP1214
21
Revision 1.0 (08-30-10)
DATASHEET
4.2.5
SMBus Send Byte
The Send Byte protocol is used to set the internal address register pointer to the correct address
location. No data is transferred during the Send Byte protocol as shown in Table 4.6.
4.2.6
SMBus Receive Byte
The Receive Byte protocol is used to read data from a register when the internal register address
pointer is known to be at the right location (e.g. set via Send Byte). This is used for consecutive reads
of the same register as shown in Table 4.7.
Table 4.5 Block Read Protocol
START
CLIENT
ADDRESS
WR
ACK
REGISTER
ADDRESS
ACK
START
CLIENT
ADDRESS
RD
ACK
REGISTER
DATA
1->0
0101_000
0
0
XXh
0
1 ->0
0101_000
1
0
XXh
ACK
REGISTER
DATA
ACK
REGISTER
DATA
ACK
REGISTER
DATA
ACK
. . .
REGISTER
DATA
NACK
STOP
0
XXh
0
XXh
0
XXh
0
. . .
XXh
1
0 -> 1
Table 4.6 Send Byte Protocol
START
CLIENT
ADDRESS
WR
ACK
REGISTER
ADDRESS
ACK
STOP
1 -> 0
0101_000
0
0
XXh
0
0 -> 1
Table 4.7 Receive Byte Protocol
START
CLIENT
ADDRESS
RD
ACK
REGISTER DATA
NACK
STOP
1 -> 0
0101_000
1
0
XXh
1
0 -> 1



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