參數(shù)資料
型號(hào): XRT83VSH28IB
廠商: Exar Corporation
文件頁數(shù): 40/75頁
文件大?。?/td> 0K
描述: IC LIU SH E1 OCTAL 225BGA
標(biāo)準(zhǔn)包裝: 84
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: 3.14 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 225-BGA
供應(yīng)商設(shè)備封裝: 225-BGA(19x19)
包裝: 托盤
XRT83VSH28
42
REV. 2.0.0
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
5.2
Parallel Microprocessor Interface Block
The Parallel Microprocessor Interface section supports communication between the local microprocessor (P)
and the LIU. The XRT83VSH28 supports an Intel asynchronous interface, Motorola 68K asynchronous, and an
Intel/Motorola interface. The microprocessor interface is selected by the state of the PTS[1:0] input pins.
Selecting the microprocessor interface is shown in Table 10.
The XRT83VSH28 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 31.
TABLE 10: SELECTING THE MICROPROCESSOR INTERFACE MODE
PTS[1:0]
MICROPROCESSOR MODE
0h (00)
Intel 68HC11, 8051, 80C188
(Asynchronous)
1h (01)
Motorola 68K (Asynchronous)
2h (10)
Power PC 403 (Synchronous)
3h (11)
MPC8xx (Synchronous)
FIGURE 31. SIMPLIFIED BLOCK DIAGRAM OF THE MICROPROCESSOR INTERFACE BLOCK
Microprocessor
Interface
WR_R/W
RD_DS
ALE
PTS [1:0]
RDY
Reset
Pclk
CS
INT
ADDR[7:0]
DATA[7:0]
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