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UCS2112 датащи(PDF) 36 Page - Microchip Technology

номер детали UCS2112
подробное описание детали  USB Dual-Port Power Switch and Current Monitor
PDF  64 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

UCS2112 датащи(HTML) 36 Page - Microchip Technology

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UCS2112
DS20005424B-page 36
 2015 Microchip Technology Inc.
8.13
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 8-6.
8.14
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 8-7.
8.14.1
STAND-ALONE OPERATING MODE
Stand-alone mode allows the UCS2112 to operate
without
active
SMBus/I2C
communications.
Stand-alone mode can be enabled by connecting a
pull-down resistor greater or equal to 47 k
 on the
COMM_ILIM pin as shown in Table 5-3.The SMCLK
pin should be tied to ground in this mode.
TABLE 8-6:
SEND BYTE PROTOCOL
START
Slave Address
WR
ACK
Register Address
ACK
STOP
1→0
YYYY_YYY
0
0
XXh
0
0 → 1
TABLE 8-7:
RECEIVE BYTE PROTOCOL
START
Slave Address
RD
ACK
Register Data
NACK
STOP
1→0
YYYY_YYY
1
0
XXh
1
0 → 1



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