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XRT86VL32IB Datasheet(PDF) 63 Page - Exar Corporation

Part # XRT86VL32IB
Description  DUAL T1/E1/J1 FRAMER/LIU COMBO - HARDWARE DESCRIPTION
PDF  65 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT86VL32IB Datasheet(HTML) 63 Page - Exar Corporation

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XRT86VL32
60
REV. V1.2.0
DUAL T1/E1/J1 FRAMER/LIU COMBO - HARDWARE DESCRIPTION
POWER PC 403 SYCHRONOUS INTERFACE TIMING
The signals used in the Power PC 403 Synchronus microprocessor interface mode are: Address Strobe (AS),
Microprocessor Clock (uPCLK), Data Strobe (DS), Read/Write Enable (R/W), Chip Select (CS), Address and
Data bits. The interface timing is shown in Figure 15. The I/O specifications are shown in Table 16.
FIGURE 15. POWER PC 403 INTERFACE SIGNALS DURING PROGRAMMED I/O READ AND WRITE OPERATIONS
TABLE 16: POWER PC 403 MICROPROCESSOR INTERFACE TIMING SPECIFICATIONS
SYMBOL
PARAMETER
MIN
MAX
UNITS
t0
Valid Address to CS Falling Edge
0
-
ns
t1
CS Falling Edge to WE Assert
0
-
ns
t2
WE Assert to TA Assert
-
320
ns
NA
WE Pulse Width (t2)
320
-
ns
t3
CS Falling Edge to TS Falling Edge
0
-
tdc
μPCLK Duty Cycle
40
60
%
tcp
μPCLK Clock Period
20
-
ns
CS
ADDR[14:0]
DATA[7:0]
WE
R/W
TA
Valid Data for Readback
Data Available to Write Into the LIU
READ OPERATION
WRITE OPERATION
t
0
t
0
t
2
Valid Address
Valid Address
t
3
t
3
t
1
t
2
TS
uPCLK
t
cp
t
dc



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