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Cypress CYS25G0101DX-ATC Manual De Usuario

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CYS25G0101DX-ATC Evaluation Board User’s Guide
9
8
TXD12
HSTL input
Parallel transmit data input TXD12. The input data is sampled by TX-
CLKI
↑
10
TXD11
HSTL input
Parallel transmit data input TXD10. The input data is sampled by TX-
CLKI
↑
12
TXD10
HSTL input
Parallel transmit data input TXD9. The input data is sampled by TX-
CLKI
↑
14
TXD9
HSTL input
Parallel transmit data input TXD8. The input data is sampled by TX-
CLKI
↑
16
TXD8
HSTL input
Parallel transmit data input TXD8. The input data is sampled by TX-
CLKI
↑
18
TXD7
HSTL input
Parallel transmit data input TXD7. The input data is sampled by TX-
CLKI
↑
20
TXD6
HSTL input
Parallel transmit data input TXD6. The input data is sampled by TX-
CLKI
↑
22
TXD5
HSTL input
Parallel transmit data ‘input TXD5. The input data is sampled by TX-
CLKI
↑
24
TXD4
HSTL input
Parallel transmit data input TXD4. The input data is sampled by TX-
CLKI
↑
26
TXD3
HSTL input
Parallel transmit data input TXD3. The input data is sampled by TX-
CLKI
↑
28
TXD2
HSTL input
Parallel transmit data input TXD2. The input data is sampled by TX-
CLKI
↑
30
TXD1
HSTL input
Parallel transmit data input TXD1. The input data is sampled by TX-
CLKI
↑
32
TXD0
HSTL input
Parallel transmit data input TXD0. The input data is sampled by TX-
CLKI
↑
J9
TXCLKI
HSTL input
Parallel transmit data input clock
Table 4.  Functional Description of DIP Switch 1 (SW1)   
Position
Name
State
Description
1
RESET
ON*
Disable Reset - Normal operation
OFF
Reset for all logic functions except the transmit FIFO
2
DIAGLOOP
ON
Transmit data (from TXD[15:0]) is routed through the receive clock 
and data recovery and presented at RXD[15:0] output
OFF*
Received serial data (from IN
±
) is routed through the receive clock and 
data recovery and presented at RXD[15:0] output
3, 4
LINELOOP, 
LOOPA
ON
ON
Invalid setting
ON
OFF
Received serial data is looped back from receive input (IN
±
) to trans-
mit output (OUT
±
) 
after being reclocked by the recovered clock
OFF
ON
Received serial data is looped back from receive input (IN
±
) to trans-
mit output (OUT
±
), 
but is not routed through the clock and data 
recovery PLL
OFF*
OFF*
Disable serial data loop back.
Table 3.  Pin Assignment of J2 Header and Description of J9 Header 
 (continued)
 
Pin Number
Name
I/O Characteristics
Description