Signal routing method

Abstract

A signal routing method adapted to a DWA structure is provided. The signal routing method at least includes following steps. An M-bit input digital signal is provided. The odd bit in the input digital signal is routed into a low-bit signal of an output digital signal, and the even bit in the input digital signal is routed into a high-bit signal of the output digital signal, wherein the output digital signal has M bits.

1 . A signal routing method, comprising:
 providing an input digital signal having M bits;   routing an odd bit in the input digital signal into a low-bit signal of an output digital signal; and   routing an even bit of the input digital signal into a high-bit signal of the output digital signal, wherein the output digital signal has M bits.   
   
   
       2 . The signal routing method according to  claim 1 , wherein routing the odd bit in the input digital signal into the low-bit signal of the output digital signal comprises:
 routing the odd bit in the input digital signal into the low-bit signal of the output digital signal according to following expression:
     B (2 i− 1)= S ( i ) 
   wherein B(2i−1) represents the odd bit in the input digital signal, S(i) represents the high-bit signal of the output digital signal, and i is a positive integer between 1 and M/2.   
   
   
       3 . The signal routing method according to  claim 1 , wherein routing the even bit in the input digital signal into the high-bit signal of the output digital signal comprises:
 routing the even bit in the input digital signal into the high-bit signal of the output digital signal according to following expression:
     B (2 i )= S ( M+ 1 −i ) 
   wherein B(2i) represents the even bit in the input digital signal, S(M+1−i) represents the low-bit signal of the output digital signal, and i is a positive integer between 1 and M/2.   
   
   
       4 . The signal routing method according to  claim 1  further comprising:
 receiving the input digital signal from a barrel shifter which shifts a thermo code to generate the input digital signal.   
   
   
       5 . A signal routing method, comprising:
 providing an input digital signal having a first bit, a second bit, a third bit and a fourth bit;   routing the first bit of the input digital signal to a first bit of an output digital signal,   routing the second bit of the input digital signal to a fourth bit of the output digital signal,   routing the third bit of the input digital signal to a second bit of the output digital signal, and   routing the fourth bit of the input digital signal to a third bit of the output digital signal,   wherein the second bit and the third bit of the input digital signal are between the first bit and the fourth bit of the input digital signal, and   wherein the second bit and the third bit of the output digital signal are between the first bit and the fourth bit of the output digital signal.   
   
   
       6 . The signal routing method according to  claim 5 , wherein the second bit of the input digital signal is between the first bit and the third bit of the input signal. 
   
   
       7 . The signal routing method according to  claim 5 , wherein the second bit of the output digital signal is between the first bit and the third bit of the output signal. 
   
   
       8 . The signal routing method according to  claim 5  further comprising:
 receiving the input digital signal from a barrel shifter which shifts a thermo code to generate the input digital signal.