Command FIFO

Question

Hello there, 
 
 I'm using a custom software for a AD5941 project, and I am a little confused on how to use the command FIFO (sequencer) as a true command FIFO, I have the following questions: 
 1. Can I use the command FIFO as a true FIFO, where I could write a command using only one register, in this case using the CMDFIFOWRITE register, writing more commands as needed? 
 2. If question 1 is yes, how can I configure this behavior? Because there is no option for command FIFO in the CMDDATACON register: 
 
 As of now the only way I to use the sequencer is to write each command manually into a specific SRAM memory address, like this: 
 CMDFIFOWADDR<= command_address 
 CMDFIFOWRITE <= command 
 then for the next command: 
 CMDFIFOWADDR<= incremented_command_address 
 CMDFIFOWRITE <= another_command

Akila · Accepted Answer

Hi, 
 In AD5941, as shown in the register above, command FIFO can be used only in memory mode as below: 
 
 void AD5940_SEQCmdWrite(uint32_t StartAddr, const uint32_t *pCommand, uint32_t CmdCnt) { while(CmdCnt--) { AD5940_WriteReg(REG_AFE_CMDFIFOWADDR, StartAddr++); AD5940_WriteReg(REG_AFE_CMDFIFOWRITE, *pCommand++); } } 
 
 Only Data FIFO can be used as a true FIFO (Each set of measured data is referred to buffer of same address. Data written first is read first. After being read, space is created for new data).)

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Command FIFO