MAX6621AUB+ MAXIM [Maxim Integrated Products], MAX6621AUB+ Datasheet - Page 15

• Manufacturer Part Number: MAX6621AUB+
• Description: PECI-to-I2C Translator
• Manufacturer: MAXIM [Maxim Integrated Products]

The first 5 bits of the MAX6621 slave address (A6–A2)
are always 1, 0, 0, 1, and 0. The MAX6621 slave
address bit A1 is set during the manufacturing process
and A0 is selected by the address input AD0. AD0 can
be connected to GND or V
possible slave addresses selectable by AD0, and a
Figure 10. Typical Read/Write Word Command
PEC (PACKET ERROR CHECKSUM) ENABLED
PEC (PACKET ERROR CHECKSUM) DISABLED
COMMAND WITH PEC (PACKET ERROR CHECKSUM)
COMMAND WITHOUT PEC (PACKET ERROR CHECKSUM)
THE RESULT CONSISTS OF RESLO FOR THE 8 LEAST SIGNIFICANT BITS (LSBS) AND RESHI FOR THE 8 MOST SIGNIFICANT BITS (MSBS), RESULTING IN A 16-BIT WORD.
TEMPERATURE DATA AND ERROR CODES ARE GIVEN AS 16-BIT WORDS.
ADDR:7: 7-BIT ADDRESS FOLLOWED BY A READ (R = 1) OR WRITE (W = 0) BIT TO FORM THE 8-BIT ADDRESS USED IN THE I
P: I
S: I
A: ACK. THE PULSE ON THE 9th CLOCK CYCLE TO INDICATE ACKNOWLEDGE TRANSFER. SLAVE PULLS LOW TO GND AND MASTER PULLS TO SLAVE'S V
NA: NOT ACKNOWLEDGE
CMD: COMMAND BYTE
RESLO: LEAST SIGNIFICANT 8-BIT RESULT
RESHI: MOST SIGNIFICANT 8-BIT RESULT
TYPICAL READ WORD COMMAND
TYPICAL WRITE WORD COMMAND
MASTER
MASTER
2
2
C STOP CONDITION. SEE FIGURE 6.
C START CONDITION. SEE FIGURE 6.
MAX6621
MAX6621
MASTER
MASTER
S
S
______________________________________________________________________________________
ADDR:7
ADDR:7
ADDR:7
ADDR:7
ADDR:7
ADDR:7
CC
W
W
W
W
. The MAX6621 has two
R
R
A
A
A
A
A
A
RESLO:8
RESLO:8
CMD:8
CMD:8
CMD:8
CMD:8
A
A
A
A
A
A
RESHI:8
RESHI:8
INLO:8
INLO:8
total of four addresses available by factory program-
ming the value of A1. Therefore, a maximum of four
MAX6621 devices can be controlled independently
from the same interface (see the I
section).
PECI-to-I
NA
A
A
A
P
PEC:8
INHI:8
INHI:8
2
C/SMBUS PROTOCOL.
2
C Translator
NA
A
A
P
P
PEC:8
2
OL
C Address Range
.
A
P
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