EVAL-ADM1063TQEBZ Analog Devices Inc, EVAL-ADM1063TQEBZ Datasheet - Page 28

• Manufacturer Part Number: EVAL-ADM1063TQEBZ
• Description: BOARD EVALUATION FOR ADM1063TQ
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADM1063TQEBZ

• Main Purpose: Power Management, Power Supply Supervisor/Tracker/Sequencer
• Embedded: No
• Utilized Ic / Part: ADM1063
• Primary Attributes: 10 Channel Supervisor / Sequencer, 6 Voltage Output DACs
• Secondary Attributes: GUI Programmable via SMBus (via USB)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADM1063
The master sends a command code telling the slave device to erase
the page. The ADM1063 command code for a page erasure is 0xFE
(1111 1110). Note that for a page erasure to take place, the page
address must be given in the previous write word transaction (see
the Write Byte/Word section). In addition, Bit 2 in the UPDCFG
register (Address 0x90) must be set to 1.
As soon as the ADM1063 receives the command byte, page
erasure begins. The master device can send a stop command as
soon as it sends the command byte. Page erasure takes
approximately 20 ms. If the ADM1063 is accessed before erasure
is complete, it responds with a no acknowledge (NACK).
Write Byte/Word
In a write byte/word operation, the master device sends a
command byte and one or two data bytes to the slave device,
as follows:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. The master asserts a stop condition on SDA to end
In the ADM1063, the write byte/word protocol is used for
three purposes:
•
•
The master device asserts a start condition on SDA.
The master sends the 7-bit slave address followed by the
write bit (low).
The addressed slave device asserts an ACK on SDA.
The master sends a command code.
The slave asserts an ACK on SDA.
The master sends a data byte.
The slave asserts an ACK on SDA.
The master sends a data byte or asserts a stop condition.
The slave asserts an ACK on SDA.
the transaction.
To write a single byte of data to the RAM. In this case, the
command byte is RAM Address 0x00 to RAM Address 0xDF,
and the only data byte is the actual data, as shown in Figure 39.
To set up a 2-byte EEPROM address for a subsequent
read, write, block read, block write, or page erase. In this
case, the command byte is the high byte of EEPROM
Address 0xF8 to EEPROM Address 0xFB. The only data
byte is the low byte of the EEPROM address, as shown in
Figure 40.
1
S
S
1
ADDRESS
SLAVE
ADDRESS
Figure 39. Single Byte Write to the RAM
SLAVE
2
2
Figure 38. EEPROM Page Erasure
W A
3
W
(0x00 TO 0xDF)
A
3
ADDRESS
RAM
4
COMMAND
(0xFE)
BYTE
4
A
5
DATA
6
A
5
A
7
P
6
8
P
Rev. B | Page 28 of 32
•
Block Write
In a block write operation, the master device writes a block of
data to a slave device. The start address for a block write must
have been set previously. In the ADM1063, a send byte opera-
tion sets a RAM address, and a write byte/word operation sets
an EEPROM address, as follows:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. The master asserts a stop condition on SDA to end
Unlike some EEPROM devices that limit block writes to within
a page boundary, there is no limitation on the start address
when performing a block write to EEPROM, except when
•
S
1
ADDRESS
SLAVE
S
1
Because a page consists of 32 bytes, only the three MSBs of
the address low byte are important for page erasure. The
lower five bits of the EEPROM address low byte specify the
addresses within a page and are ignored during an erase
operation.
To write a single byte of data to the EEPROM. In this case,
the command byte is the high byte of EEPROM Address 0xF8
to EEPROM Address 0xFB. The first data byte is the low
byte of the EEPROM address, and the second data byte is
the actual data, as shown in Figure 41.
The master device asserts a start condition on SDA.
The master sends the 7-bit slave address followed by
the write bit (low).
The addressed slave device asserts an ACK on SDA.
The master sends a command code that tells the slave
device to expect a block write. The ADM1063 command
code for a block write is 0xFC (1111 1100).
The slave asserts an ACK on SDA.
The master sends a data byte that tells the slave device how
many data bytes are being sent. The SMBus specification
allows a maximum of 32 data bytes in a block write.
The slave asserts an ACK on SDA.
The master sends N data bytes.
The slave asserts an ACK on SDA after each data byte.
the transaction.
There must be at least N locations from the start address to
the highest EEPROM address (0xFBFF) to avoid writing to
invalid addresses.
2
ADDRESS
SLAVE
1
S
ADDRESS
2
SLAVE
W A
2
Figure 42. Block Write to the EEPROM or RAM
3
Figure 41. Single Byte Write to the EEPROM
W A
COMMAND 0xFC
(BLOCK WRITE)
Figure 40. Setting an EEPROM Address
3
W A
(0xF8 TO 0xFB)
HIGH BYTE
3
4
ADDRESS
EEPROM
(0xF8 TO 0xFB)
HIGH BYTE
4
ADDRESS
EEPROM
A
5
4
COUNT
BYTE
A
5
6
(0x00 TO 0xFF)
A
5
LOW BYTE
ADDRESS
A
EEPROM
7
(0x00 TO 0xFF)
DATA
6
LOW BYTE
ADDRESS
8
1
EEPROM
6
A
9
DATA
A
7
2
DATA
8
A
7
A
DATA
8
P
A
9
N
10
P
A P
10