參數(shù)資料
型號(hào): XRT75R12IB
廠商: Exar Corporation
文件頁(yè)數(shù): 46/90頁(yè)
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 12CH 420TBGA
標(biāo)準(zhǔn)包裝: 40
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 12/12
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 420-LBGA 裸露焊盤
供應(yīng)商設(shè)備封裝: 420-TBGA(35x35)
包裝: 托盤
XRT75R12
47
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
REV. 1.0.4
5. After the P toggles the Write signal "Low", the LIU will toggle the RDY output pin "Low". The LIU does this
to inform the P that the data has been written into the internal register location, and that it is ready for the
next command.
6. The CS input pin must be pulled "High" before a new command can be issued.
FIGURE 35. ASYNCHRONOUS P INTERFACE SIGNALS DURING PROGRAMMED I/O READ AND WRITE OPERATIONS
TABLE 15: ASYNCHRONOUS TIMING SPECIFICATIONS
SYMBOL
PARAMETER
MIN
MAX
UNITS
t0
Valid Address to CS Falling Edge
0
-
ns
t1
CS Falling Edge to RD Assert
0
-
ns
t2
RD Assert to RDY Assert
-
65
ns
NA
RD Pulse Width (t2)
70
-
ns
t3
CS Falling Edge to WR Assert
0
-
ns
t4
WR Assert to RDY Assert
-
65
ns
NA
WR Pulse Width (t4)
70
-
ns
CS
Addr[7:0]
D[7:0]
RD
WR
RDY
Valid Data for Readback
Data Available to Write Into the LIU
READ OPERATION
WRITE OPERATION
t
0
t
0
t
1
t
4
t
2
t
3
Valid Address
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