參數(shù)資料
型號(hào): 74LCXR2245WMX
廠商: Fairchild Semiconductor
文件頁數(shù): 12/12頁
文件大小: 0K
描述: IC TRANSCVR BIDIRECT LV 20SOIC
標(biāo)準(zhǔn)包裝: 1
系列: 74LCX
邏輯類型: 收發(fā)器,非反相
元件數(shù): 1
每個(gè)元件的位元數(shù): 8
輸出電流高,低: 12mA,12mA
電源電壓: 2 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC
包裝: 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁面: 1211 (CN2011-ZH PDF)
其它名稱: 74LCXR2245WMXDKR
9
COMMERCIALTEMPERATURERANGE
IDT72V70190 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 256 x 256
TABLE 7 — FRAME ALIGNMENT REGISTER (FAR) BITS
0123
4
5
6
7
8
9
10
11
12
13
14
15
16
ST-BUS Frame
CLK
Offset Value
FE Input
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
GCI Frame
CLK
Offset Value
FE Input
(FD[10:0] = 06H)
(FD11 = 0, sample at CLK LOW phase)
(FD[10:0] = 09H)
(FD11 = 1, sample at CLK HIGH phase)
5717 drw04
Figure 4. Example for Frame Alignment Measurement
Bit
Name
Description
15-13
Unused
Must be zero for normal operation.
12
CFE
When CFE = 1, the frame evaluation is completed and bits FD10 to FD0 bits contains a valid frame alignment
(Complete Frame Evaluation)
offset. This bit is reset to zero, when SFE bit in the IMS register is changed from 1 to 0.
11
FD11
The falling edge of FE (or rising edge for GCI mode) is sampled during the CLK-high phase (FD11 = 1)
(Frame Delay Bit 11)
or during the CLK-low phase (FD11 = 0). This bit allows the measurement resolution to CLK cycle.
10-0
FD10-0
The binary value expressed in these bits refers to the measured input offset value. These bits are rest to
(Frame Delay Bits)
zero when the SFE bit of the IMS register changes from 1 to 0. (FD10 – MSB, FD0 – LSB)
Read/Write Address:
02H.
Reset Value:
0000H.
15
14
13
12
11
10
9876543210
0
CFE
FD11
FD10
FD9
FD8
FD7
FD6
FD5
FD4
FD3
FD2
FD1
FD0
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