參數資料
型號: XRT73L03BIV
廠商: Exar Corporation
文件頁數: 55/61頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 3CH 120LQFP
標準包裝: 72
類型: 線路接口裝置(LIU)
驅動器/接收器數: 3/3
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: 120-LQFP
供應商設備封裝: 120-LQFP(14x20)
包裝: 托盤
XRT73L03B
3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.1
57
the desired eight bit data word to the SDI input pin via
the Microprocessor Serial Interface. The Micropro-
cessor Serial Interface latches the value on the SDI
input pin on the rising edge of SClk. Apply this word
(D0 through D7) serially, in ascending order with the
LSB first.
Simplified Interface Option
The design of the circuitry connecting to the Micro-
processor Serial Interface can be simplified by tying
both the SDO and SDI pins together and reading data
from and/or writing data to this combined signal. This
simplification is possible because only one of these
signals are active at any given time. The inactive sig-
nal is tri-stated.
NOTES:
1. A5 is always "0"
2. R/W = "1" for Read Operations
3. R/W = "0" for Write Operations
4. Shaded box denotes a “don't care” value
FIGURE 37. MICROPROCESSOR SERIAL INTERFACE DATA STRUCTURE
FIGURE 38. TIMING DIAGRAM FOR THE MICROPROCESSOR SERIAL INTERFACE
D0
D1
D2
0
D4
D3
High Z
SDO
A0
D0
R/W
D1
A6
0
A4
A3
A2
A1
D7
D6
D5
D4
D3
D2
SDI
12345678
9
10
11
12
13
14
15
16
SClk
CS
High Z
SDI
R/W
A1
A0
CS
SCLK
CS
SCLK
SDI
SDO
D0
D1
D2
D7
t22
t21
t23
t24
t25
t26
t27
t28
t29
t30
t31
t32
t33
Hi-Z
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