參數(shù)資料
型號(hào): XRT73R06
廠商: Exar Corporation
英文描述: SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
中文描述: 六通道線(xiàn)路接口單元E3/DS3/STS-1
文件頁(yè)數(shù): 49/68頁(yè)
文件大小: 347K
代理商: XRT73R06
á
SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73R06
REV. 1.0.0
46
7.0
The Microprocessor Interface section supports communication between the local microprocessor (μP) and the
LIU. The XRT73R06 supports a parallel interface asynchronously or synchronously timed to the LIU. The mi-
croprocessor interface is selected by the state of the Pmode input pin. Selecting the microprocessor interface
mode is shown in Table 11.
MICROPROCESSOR INTERFACE BLOCK
The local μP configures the LIU by writing data into specific addressable, on-chip Read/Write registers. The
μP provides the signals which are required for a general purpose microprocessor to read or write data into
these registers. The μP also supports polled and interrupt driven environments. A simplified block diagram of
the microprocessor is shown in Figure 35.
T
ABLE
11: S
ELECTING
THE
M
ICROPROCESSOR
I
NTERFACE
M
ODE
P
MODE
M
ICROPROCESSOR
M
ODE
"Low"
Asynchronous Mode
"High"
Synchronous Mode
F
IGURE
35. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
M
ICROPROCESSOR
I
NTERFACE
B
LOCK
Microprocessor
Interface
WR
RD
Pmode
RDY
INT
RESET
PCLK
CS
Addr[7:0]
D[7:0]
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