User Guide

Table Of Contents
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SRIO Functional Description
Table 10. Bits of SERDES_CFGTX n_CNTL Registers (continued)
Bit Field Value Description
4:2 BUS- Bus width. Selects the width of the parallel interface (10 or 8 bit).
WIDTH
000 10-bit operation. Data is input on TD n[9:0]. TXBCLK n period is 10 bit periods (4 high, 6 low).
001 8-bit operation. Data is input on TD n[9:2]. TXBCLK n period is 8 bit periods (4 high, 4 low).
TD n[1:0] are ignored.
01x Reserved
1xx Reserved
1 Reserved Reserved
0 ENTX Enable transmitter. Enables this transmitter when high.
Table 11. SWING Bits
CFGTX[11:9] Amplitude (mV
dfpp
)
000 125
001 250
010 500
011 625
100 750
101 1000
110 1125
111 1250
Table 12. DE Bits
CFGTX[15:12] Amplitude Reduction
% dB
0000 0 0
0001 4.76 -0.42
0010 9.52 -0.87
0011 14.28 -1.34
0100 19.04 -1.83
0101 23.8 -2.36
0110 28.56 -2.92
0111 33.32 -3.52
1000 38.08 -4.16
1001 42.85 -4.86
1010 47.61 -5.61
1011 52.38 -6.44
1100 57.14 -7.35
1101 61.9 -8.38
1110 66.66 -9.54
1111 71.42 -10.87
SPRU976 March 2006 Serial RapidIO (SRIO) 31
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