參數(shù)資料
型號: XRT83VL38IB-F
廠商: Exar Corporation
文件頁數(shù): 48/95頁
文件大?。?/td> 0K
描述: IC LIU SH T1/E1/J1 OCTAL 225BGA
標準包裝: 84
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 8/8
規(guī)程: E1
電源電壓: 3.14 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 225-BGA
供應商設(shè)備封裝: 225-BGA(19x19)
包裝: 托盤
其它名稱: 1016-1481
XRT83VL38IB-F-ND
XRT83VL38
48
OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. 1.0.1
PARALLEL MICROPROCESSOR INTERFACE BLOCK
The Parallel Microprocessor Interface section supports communication between the local microprocessor (P)
and the LIU. The XRT83VL38 supports an Intel asynchronous interface and Motorola 68K asynchronous
interface. The microprocessor interface is selected by the state of the PTS[2:1] input pins. Selecting the
microprocessor interface is shown in Table 15.
The XRT83VL38 uses multipurpose pins to configure the device appropriately. The local P configures the LIU
by writing data into specific addressable, on-chip Read/Write registers. The microprocessor interface provides
the signals which are required for a general purpose microprocessor to read or write data into these registers.
The microprocessor interface also supports polled and interrupt driven environments.
A simplified block
diagram of the microprocessor is shown in Figure 28.
TABLE 14: MICROPROCESSOR SERIAL INTERFACE TIMINGS ( TA = 25
0C, V
DD=3.3V± 5% AND LOAD = 10PF)
SYMBOL
PARAMETER
MIN.
TYP.
MAX
UNITS
t21
CS Low to Rising Edge of SClk
5
ns
t22
SDI to Rising Edge of SClk
5
ns
t23
SDI to Rising Edge of SClk Hold Time
5
ns
t24
SClk "Low" Time
20
ns
t25
SClk "High" Time
20
ns
t26
SClk Period
40
ns
t28
CS Inactive Time
40
ns
t29
Falling Edge of SClk to SDO Valid Time
5
ns
t31
Rising edge of CS to High Z
5
ns
TABLE 15: SELECTING THE MICROPROCESSOR INTERFACE MODE
PTS[2:1]
MICROPROCESSOR MODE
0h (00)
Intel 68HC11, 8051, 80C188
(Asynchronous)
1h (01)
Motorola 68K (Asynchronous)
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