MAX6618 Maxim Integrated Products, MAX6618 Datasheet - Page 12

• Manufacturer Part Number: MAX6618
• Description: PECI-to-I2C Translator
• Manufacturer: Maxim Integrated Products

Error codes are represented as 16-bit words in the
range 8000h–81FFh as shown in Table 14.
Table 14. Error Codes
PECI-to-I
Figure 5. 2-Wire Serial-Interface Timing Details
12
t
HD, STA
ERROR
CODES
8000h–
80FFh
8100h
8101h
8102h
8103h
8104h
SDA
SCL
______________________________________________________________________________________
CONDITION
START
Refer to Intel PECI specification.
PECI transaction failed for more than the
configured number of consecutive retries.
Polling disabled for requested socket/domain.
First poll not yet completed for requested
socket/domain (on startup).
Read maximum temperature requested, but no
sockets/domains enabled or all enabled
sockets/domains have errors; or read maximum
temperature address requested, but read
maximum temperature was not called.
Get alert socket/domain requested, but no alert
active.
t
LOW
2
t
R
C Translator
t
SU, DAT
t
HIGH
DESCRIPTION
t
F
t
HD, DAT
Error Codes
t
SU, STA
REPEATED START
CONDITION
Table 15 shows the command to read the firmware version.
The result is a 16-bit word (low byte transmitted first,
high byte second), e.g., 0100h for the MAX6618
firmware version 1.0.
If an I
greater than 20ms, the MAX6618 asserts the internal
bus lockup reset that restarts itself in the default startup
condition.
The MAX6618 operates as a slave that sends and
receives data through an I
face. The interface uses a serial-data line (SDA) and a
serial-clock line (SCL) to achieve bidirectional commu-
nication between master and slave. A master (typically
a microcontroller) initiates all data transfers to and from
the MAX6618 and generates the SCL clock that syn-
chronizes the data transfer (Figure 5).
Table 15. Firmware Command
COMMAND
09h
t
HD, STA
2
C transaction starts and gets locked up for
Get firmware
version
DESCRIPTION
Version Information Command
Bus Lockout Timeout Reset
2
C-compatible, 2-wire inter-
t
SU, STO
ReadWord
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TYPE
Serial Interface
CONDITION
STOP
t
BUF
16-bit word
RESULT
CONDITION
START