REV. 1.0.7 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT 6.2 Parallel Microprocessor Interface Block The Paralle" />
參數資料
型號: XRT83SH38IB
廠商: Exar Corporation
文件頁數: 42/78頁
文件大小: 0K
描述: IC LIU SH T1/E1/J1 8CH 225BGA
標準包裝: 84
類型: 線路接口裝置(LIU)
驅動器/接收器數: 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: 225-BGA
供應商設備封裝: 225-BGA(19x19)
包裝: 托盤
XRT83SH38
44
REV. 1.0.7
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
6.2
Parallel Microprocessor Interface Block
The Parallel Microprocessor Interface section supports communication between the local microprocessor (P)
and the LIU. The XRT83SH38 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 14.
The XRT83SH38 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 35.
TABLE 14: SELECTING THE MICROPROCESSOR INTERFACE MODE
PTS[1:0]
MICROPROCESSOR MODE
0h (00)
Intel 68HC11, 8051, 80C188
(Asynchronous)
1h (01)
Motorola 68K (Asynchronous)
2h (10)
Intel x86 (Synchronous)
3h (11)
860 Motorola (Synchronous)
FIGURE 35. SIMPLIFIED BLOCK DIAGRAM OF THE MICROPROCESSOR INTERFACE BLOCK
Microprocessor
Interface
WR_R/W
RD_DS
ALE
PType [1:0]
RDY
Reset
Pclk
CS
INT
ADDR[7:0]
DATA[7:0]
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