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參數(shù)資料
| 型號： | SMM764FCR0 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | Four-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link⑩ |
| 中文描述： | 四通道有源直流輸出控制器，監(jiān)視器，Marginer和音序器的序列連接⑩ |
| 文件頁數(shù)： | 23/33頁 |
| 文件大?。?/td> | 392K |
| 代理商： | SMM764FCR0 |
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SMM764
Preliminary Information
Summit Microelectronics, Inc
2098 1.1 6/29/2005
23
WRITE PROTECTION
The SMM764 powers up into a write protected mode.
Writing a code to the volatile write protection register
can disable the write protection. The write protection
register is located at address 87
HEX
of slave address
1001
BIN
.
Writing 0101
BIN
to bits [7:4] of the write protection
register allow writes to the general-purpose memory
while writing 0101
BIN
to bits [3:0] allow writes to the
configuration registers. The write protection can re-
enable by writing other codes (not 0101
BIN
) to the write
protection register. Writing to the write protection
register is shown in Figure 13.
CONFIGURATION REGISTERS
The majority of the configuration registers are grouped
with the general-purpose memory located at either
slave address 1010
BIN
or 1011
BIN
. Bus address bits
BA[2:1] are programmable. The bus address bit BA[0],
however, is used to differentiate the general-purpose
memory from the configuration registers and should be
set to 1
BIN
when accessing the configuration registers
.
Bus address bit BA[2] can be programmed as a
“virtual 0” or biased by the A2 pin.
An additional configuration register is located at
address 84
HEX
of slave address 1001
BIN
.
Writing and reading the configuration registers is
shown in Figures 14, 15, 16, 17, and 18
Note: Configuration writes or reads of registers 00
HEX
to 0F
HEX
should not be performed while the SMM764 is
margining.
GENERAL-PURPOSE MEMORY
The 2k-bit general-purpose memory is located at
either slave address 1010
BIN
or 1011
BIN
. Bus address
bits BA[2:1] are programmable. The bus address bit
BA[0], however, is used to differentiate the general-
purpose memory from the configuration registers and
should be set to 0
BIN
when accessing general purpose
memory
.
Bus address bit BA[2] can be programmed
as a “virtual 0” or biased by the A2 pin.
Slave Address Bus Address Register Type
The slave address and bus address must be set each
time the memory is accessed. Memory writes and
reads are shown in Figures 19, 20 and 21.
COMMAND AND STATUS REGISTERS
The command and status registers are located at
slave address 1001
BIN
. Writes and reads of the
command and status registers are shown in Figures
22 and 23.
ADC CONVERSIONS
An ADC conversion on any monitored channel can be
performed and read over the I
2
C bus using the ADC
read command. The ADC read command, shown in
Figure 24, starts with a dummy write to the 1001
BIN
slave address. Bits [6:3] of the word address byte are
used to address the desired monitored input. Once
the device acknowledges the channel address, it
begins the ADC conversion of the addressed input.
This conversion requires 70
μ
s to complete. During
this conversion time, acknowledge polling can be
used. The SMM764 will not acknowledge the address
bytes until the conversion is complete. When the
conversion
has
completed,
acknowledge the address byte and return the 10-bit
conversion along with a 4-bit channel address echo.
GRAPHICAL USER INTERFACE (GUI)
Device configuration utilizing the Windows based
SMM764 graphical user interface (GUI) is highly
recommended. The software is available from the
Summit website (website at:
(
http://www.summitmicro.com/tech_support/tech.htm#
GUI
.
Using the GUI in conjunction with this datasheet
simplifies the process of device prototyping and the
interaction of the various functional blocks. A
programming Dongle (SMX3200) is available from
Summit to communicate with the SMM764. The
Dongle connects directly to the parallel port of a PC
and programs the device through a cable using the I
C
bus protocol.
the
SMM764
will
1001
BIN
BA2 BA1 BA0
Write Protection Register,
Command and Status Registers,
One Configuration Registers,
ADC Conversion Readout
BA2 BA1 0
2-k Bits of General-Purpose Memory
1010
BIN
or
1011
BIN
BA2 BA1 1
Configuration Registers
Table 1 - Address bytes used by the SMM764.
I
2
C PROGRAMMING INFORMATION (CONTINUED)
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相關代理商/技術參數(shù) |
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|---|---|
| SMM764FCR1 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Four-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link⑩ |
| SMM764FCR2 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Four-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link⑩ |
| SMM764FCR3 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Four-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link⑩ |
| SMM764FCR4 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Four-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link⑩ |
| SMM764FCR5 | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Four-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link⑩ |
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