Intel C2518 FH8065501516710 Data Sheet

Product codes
FH8065501516710
Page of 746
Volume 2—SMBus 2.0 Unit 0 - PCU—C2000 Product Family
System Host Controller
Intel
®
 Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 2 of 3
September 2014
436
Order Number: 330061-002US
18.3.1.8
I
2
C Read Command
This command allows the SoC to perform block reads to certain I
2
C devices, such as 
serial EEPROMs. The SMBus Block Read supports the 7-bit addressing mode only. 
However, this does not allow access to devices using the I
2
C combined format that has 
data bytes after the address. Typically these data bytes correspond to an offset 
(address) within the serial memory chips.
Note:
For an I
2
The SoC continues reading data from the peripheral until the NAK is received.
Table 18-3. I
2
C Block Read
Bit
Description
1
Start
8:2
Slave address – 7 bits
9
Write
10
Acknowledge from slave
18:11
19
Acknowledge from slave
20
Repeated start
27:21
Slave address – 7 bits
28
Read
29
Acknowledge from slave
37:30
Data byte 1 from slave – 8 bits
38
Acknowledge
46:39
Data byte 2 from slave – 8 bits
47
Acknowledge
Data bytes from slave/acknowledge
Data byte N from slave – 8 bits
NOT  acknowledge
Stop