參數(shù)資料
型號： DS1878T+T&R
廠商： Maxim Integrated Products
文件頁數(shù)： 95/101頁
文件大?。?/td> 0K
描述： IC CTLR SFP W/DGTL LDD RX 28TQFN
標準包裝： 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
______________________________________________________________________________________
93
Table 02h, Register F7h: 3WSET
FACTORY DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
PW2 or (PW1 and RWTBL246)
MEMORY TYPE
Nonvolatile (SEE)
F7h
RESERVED
TXPORDIS
EXCTRL1
EXCTRL2
BIT 7
BIT 0
BITS 7:3
RESERVED
BIT 2
TXPORDIS: Transmit POR Disable.
0 = The 3-wire interface monitors the TXPOR bit in the laser driver’s TXSTAT1 register.
1 = The 3-wire interface ignores the TXPOR bit in the laser driver’s TXSTAT1 register.
BITS 1:0
EXCTRL[1:0]: Extra 3-Wire Control Register Selection. Used to enable/disable the 3-wire registers.
00 = SETTXEQ and SETLOSTIMER are enabled.
01 = Device mode. SETTEXEQ, SETLOSTIMER, RXCTRL3, TXCTRL2, and TXCTRL3 are disabled.
10 = SETTXEQ, SETLOSTIMER, and RXCTRL3 are enabled.
11 = SETTXEQ, SETLOSTIMER, RXCTRL3, TXCTRL2, and TXCTRL3 are enabled.
Table 02h, Register F8h: 3WCTRL
FACTORY DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
PW2 or (PW1 and RWTBL246)
MEMORY TYPE
Volatile
F8h
RESERVED
3WRW
3WDIS
BIT 7
BIT 0
BITS 7:2
RESERVED
BIT 1
3WRW: Initiates a 3-wire write or read operation. The write command uses the memory address
found in the 3-wire ADDRESS register (Table 02h, Register F9h) and the data from the 3-wire WRITE
register (Table 02h, Register FAh). This bit clears itself at the completion of the write operation.
The read command uses the memory address found in the 3-wire ADDRESS register (Table 02h,
Register F9h). The address determines whether a read or write operation is to be performed. This
bit clears itself at the completion of the read operation.
0 = (Default) Reads back as 0 when the write or read operation is completed.
1 = Initiates a 3-wire write or read operation.
BIT 0
3WDIS: Disables all automatic communication across the 3-wire interface. This includes all
updates from the LUTs, APC loop, and status registers. The only 3-wire communication is with the
manual mode of operation.
0 = (Default) Automatic communication is enabled.
1 = Disables automatic communication.
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