REV. 1.0.0 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT 31 4.0 SERIAL MICROPROCESSOR INTERFACE BLOCK The serial microprocessor uses" />
參數(shù)資料
型號(hào): XRT83SL28IV-F
廠商: Exar Corporation
文件頁數(shù): 27/47頁
文件大?。?/td> 0K
描述: IC LIU SH E1 8CH 144TQFP
標(biāo)準(zhǔn)包裝: 60
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 8/8
規(guī)程: T1,E1,J1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 144-LQFP
供應(yīng)商設(shè)備封裝: 144-TQFP(20x20)
包裝: 托盤
xr
XRT83SL28
REV. 1.0.0
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
31
4.0 SERIAL MICROPROCESSOR INTERFACE BLOCK
The serial microprocessor uses a standard 3-pin serial port with CS, SCLK, and SDI for programming the LIU.
Optional pins such as SDO, INT, and RESET allow the ability to read back contents of the registers, monitor
the LIU via an interrupt pin, and reset the LIU to its default configuration by pulling reset "Low" for more than
10
S. A simplified block diagram of the Serial Microprocessor is shown in Figure 26.
FIGURE 26. SIMPLIFIED BLOCK DIAGRAM OF THE SERIAL MICROPROCESSOR INTERFACE
4.1
Serial Timing Information
The serial port requires 16 bits of data applied to the SDI (Serial Data Input) pin. The Serial Microprocessor
samples SDI on the rising edge of SCLK (Serial Clock Input). The data is not latched into the device until all 16
bits of serial data have been sampled. A timing diagram of the Serial Microprocessor is shown in Figure 27.
FIGURE 27. TIMING DIAGRAM FOR THE SERIAL MICROPROCESSOR INTERFACE
Serial
Microprocessor
Interface
CS
SDI
SCLK
SDO
RESET
INT
HW/Host
CS
SDI
SCLK
SDO
1
2
10
9
8
7
6
5
4
3
11
16
15
13
14
12
R/W
A0
A1A2A3A4
A5
X
D0
D1
D7
D6
D5
D4
D3
D2
D0
D1
D7
D6
D5
D4
D3
D2
High-Z
25nS
50nS
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