參數(shù)資料
型號: XRT73R12IB
廠商: Exar Corporation
文件頁數(shù): 6/89頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 12CH 420TBGA
標準包裝: 40
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 12/12
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 420-LBGA 裸露焊盤
供應(yīng)商設(shè)備封裝: 420-TBGA(35x35)
包裝: 托盤
XRT73R12
11
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.0.3
K25
M22
M23
M24
K26
L26
M26
N26
Addr0
Addr1
Addr2
Addr3
Addr4
Addr5
Addr6
Addr7
I
An eight bit direct address bus that specifies the source/destination register for
a Read or Write operation.
P22
R26
T26
U26
R25
R24
R23
R22
D0
D1
D2
D3
D4
D5
D6
D7
I/O
An eight bit bi-directional data bus that provides the data into the LIU for a Write
operation or the data out to the Host for a Read operation.
P26
INT
O
Interrupt Active Output (active low)
Normally, this output pin will be pulled "High". However, if the user enables
interrupts within the LIU, and if those conditions occur, the XRT73R12 will sig-
nal an interrupt from the Microprocessor by pulling this output pin "Low". The
Host Microprocessor must ascertain the source of the interrupt and service it.
Reading the source of the interupt will clear the flag and the INT pin will go back
high unless another interrupt has gone active.
NOTES:
1. This pin will remain "Low" until the Interrupt has been serviced.
2.
This pin must be pulled "High" with a 3k
± 1% resistor
N2
RESET
I
RESET Input
Pulsing this input "Low" causes the XRT73R12 to reset the contents of the on-
chip Command Registers to their default values. As a consequence, the
XRT73R12 will then also be operating in its default condition.
For normal operation this input pin should be at a logic "High".
NOTE:
This input pin is internally pulled high.
MICROPROCESSOR PARALLEL INTERFACE -
PIN #
SIGNAL NAME
TYPE
DESCRIPTION
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