參數(shù)資料
型號: XRT83VSH316IB
廠商: Exar Corporation
文件頁數(shù): 48/98頁
文件大?。?/td> 0K
描述: IC LIU SH T1/E1/J1 16CH 316STBGA
標(biāo)準(zhǔn)包裝: 60
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 16/16
規(guī)程: T1,E1,J1
電源電壓: 3.14 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 316-LBGA
供應(yīng)商設(shè)備封裝: 316-STBGA(21x21)
包裝: 托盤
XRT83VSH316
49
16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
6.0
MICROPROCESSOR INTERFACE
The microprocessor interface can be accessed through a Standard Peripheral Interface (Serial SPI) or
Standard Parallel Microprocessor Interface. By default, the parallel interface is selected. To use the SPI
interface, the SER/PAR pin must be pulled "High".
6.1
SPI Serial Peripheral 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 36.
6.1.1
Serial Timing Information
The serial port requires 24 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 24
bits of serial data have been sampled. A timing diagram of the Serial Microprocessor is shown in Figure 37.
NOTE: For applications without a free running SCLK, a minimum of 1 SCLK pulse must be applied when CS is “High”,
befrore pulling CS “Low”.
FIGURE 36. SIMPLIFIED BLOCK DIAGRAM OF THE SERIAL MICROPROCESSOR INTERFACE
FIGURE 37. TIMING DIAGRAM FOR THE SERIAL MICROPROCESSOR INTERFACE
Serial
Microprocessor
Interface
CS
SDI
SCLK
SDO
RESET
INT
SER/PAR
R/W
ADDR[0 ] - ADDR[7]
DATA[0 ] - DATA[7]
CS
SDI
SCLK
8- Bit Address
8- Bit Data
1= Read
0= Write
SDO
DATA[0 ] - DATA[7]
Readback
ADDR[8:9] , R/W , XXXXX
8- Bit Address
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