參數(shù)資料
型號(hào)： DS1878T+T
廠商： Maxim Integrated Products
文件頁數(shù)： 59/101頁
文件大小： 0K
描述： IC CTLR SFP W/DGTL LDD RX 28TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
類型： SFP+ 控制器
輸入類型： 模擬，數(shù)字
輸出類型： 數(shù)字
接口： I²C，LDD，串行
電流 - 電源： 2.5mA
安裝類型： 表面貼裝
封裝/外殼： 28-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 28-TQFN-EP（5x5）
包裝： 帶卷 (TR)
DS1878
SFP+ Controller with Digital LDD Interface
60
______________________________________________________________________________________
Table 02h Register Descriptions
Table 02h, Register 80h: MODE
POWER-ON VALUE
3Fh
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
PW2 or (PW1 and RTBL246)
MEMORY TYPE
Volatile
80h
SEEB
RESERVED
DAC1 EN
DAC2 EN
AEN
MOD EN
APC EN
BIAS EN
BIT 7
BIT 0
BIT 7
SEEB:
0 = (Default) Enables EEPROM writes to SEE bytes.
1 = Disables EEPROM writes to SEE bytes during configuration, so that the configuration of the part
is not delayed by the EE cycle time. Once the values are known, write this bit to a 0 and write the
SEE locations again for data to be written to the EEPROM.
BIT 6
RESERVED
BIT 5
DAC1 EN:
0 = DAC1 VALUE is writable by the user and the LUT recalls are disabled. This allows users to
interactively test their modules by writing the values for DAC1. The output is updated with the new
value at the end of the write cycle. The I2C STOP condition is the end of the write cycle.
1 = (Default) Enables auto control of the LUT for DAC1 VALUE.
BIT 4
DAC2 EN:
0 = DAC2 VALUE is writable by the user and the LUT recalls are disabled. This allows users to
interactively test their modules by writing the values for DAC2. The output is updated with the new
value at the end of the write cycle. The I2C STOP condition is the end of the write cycle.
1 = (Default) Enables auto control of the LUT for DAC2 VALUE.
BIT 3
AEN:
0 = The temperature-calculated index value TINDEX is writable by users and the updates of
calculated indexes are disabled. This allows users to interactively test their modules by
controlling the indexing for the LUTs. The recalled values from the LUTs appear in the DAC
registers after the next completion of a temperature conversion.
1 = (Default) The internal temperature sensor determines the value of TINDEX.
BIT 2
MOD EN:
0 = MODULATION register is writable by the user and the LUT recalls are disabled. This allows users
to interactively test their modules by writing the DAC value for modulation. The output is updated with
the new value at the end of the write cycle. The I2C STOP condition is the end of the write cycle.
1 = (Default) Enables auto control of the LUT for modulation.
BIT 1
APC EN:
0 = APC DAC is writable by the user and the LUT recalls are disabled. This allows users to
interactively test their modules by writing the DAC value for APC reference. The output is updated with
the new value at the end of the write cycle through the 3-wire interface. The I2C STOP condition is the
end of the write cycle.
1 = (Default) Enables auto control of the LUT for APC reference.
BIT 0
BIAS EN:
0 = BIAS register is controlled by the user and the APC is in manual mode. The BIAS register value
is written with the use of the 3-wire interface. This allows the user to interactively test their modules
by writing the DAC value for bias.
1 = (Default) Enables auto control for the APC feedback.
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