Cirrus Logic AN187 - Manual (Page 8)

AN187
8 AN187REV1
5. PLD EQUATIONS; SOFTMODEM VIA EP72/7312 DAI TO THE SI3034
DAA CHIP SET
P-Terms Fan-in Fan-out Type Name
(attributes)
Equations
1/1 1 1 pin SCLK_DLYD SCLK_DLYD = (N_22)
Reverse Polarity — !SCLK_DLYD = (!N_22)
1/1 1 1 pin nFSYNC nFSYNC = (N_20)
Reverse Polarity — !nFSYNC = (!N_20)
1/1 1 1 node N_21 N_21 = (nSCLK)
Reverse Polarity — !N_21 = (!nSCLK)
1/1 1 1 node N_22 N_22 = (nSCLK_also)
Reverse Polarity — !N_22 = (!nSCLK_also)
1/1 1 1 node N_19 N_19 = (LRCK_DLYD)
Reverse Polarity — !N_19 = (!LRCK_DLYD)
2/1 1 1 node N_20 N_20 = (N_17 # !N_19)
Reverse Polarity — !N_20 = (!N_17 & N_19)
2/2 2 1 node N_1 N_1 = (N_15 & !N_13 # !N_15 & N_13)
Reverse Polarity — !N_1 = (!N_15 & !N_13 #
N_15 & N_13)
1/2 2 1 node N_2 N_2 = (N_15 & N_13)
Reverse Polarity — !N_2 = (!N_15 # !N_13)
1/2 2 1 node N_3 N_3 = (N_19 & N_1)
Reverse Polarity — !N_3 = (!N_19 # !N_1)
2/2 2 1 node N_4 N_4 = (N_2 & !N_16 # !N_2 & N_16)
Reverse Polarity — !N_4 = (!N_2 & !N_16
# N_2 & N_16)
1/2 2 1 node N_5 N_5 = (N_19 & N_4)
Reverse Polarity — !N_5 = (!N_19 # !N_4)
2/1 2 1 node N_6 N_6 = (N_7 # N_17)
Reverse Polarity — !N_6 = (!N_7 & !N_17)
1/4 4 1 node N_7 N_7 = (N_16 & N_15 & N_13 & N_12)
Reverse Polarity — !N_7 = (!N_13 # !N_15
# !N_16 # !N_12)
1/2 2 1 node N_8 N_8 = (N_19 & N_6)
Reverse Polarity — !N_8 = (!N_19 # !N_6)
Table 2. PLD Equations