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TMDSLCDK6748: ADC THS1206 configuration with LCDK6748 through EMIF

shrikant dudhambe
Prodigy 125 points
Part Number: TMDSLCDK6748
Other Parts Discussed in Thread: THS1206

Dear Sir,

Sir i am trying ADC configuration with LCDK6748 today again with the EMIF method as from start  i was working on it. I have verified the TEST MODE of  ths1206 and its respond over changing the register value as per given in table, & its functioning as specified with out any modification in design as we have made earlier. But sometimes we need to change the JUMPER connections at W1 & W11 so that we can adjust get change over in internal voltage and external voltage that is like switching Vref mode.
As per instructions given in THS1206 interface example(slaa094_R1slaa094_r1.pdfsprufl6f_R1.pdf.pdf) - and shown in figure no. 25 here CSO which is initially active low after that it will goes high and at time of dat available (/RD=1) it again goes to high but after that it is not getting active low please brief us how to get control over it.[ PAGE NO 23,SLAA094.pdf]

Second thing is that as mentioned in TABLE 2 EMIFA pins specific to SDRAM ( spruf6f_R1.pdf,pg.no 13) EMA_CS0 please brief us regarding the same as it is also not functioning the same way as mentioned .

  • 0
    TI__Guru* 84110 points
    Shrikant,

    Did you connect the THS1206 as shown in SLAA094_R1 Figure 29? That connection uses a C6000 EMIF which is similar for all of the C6000 devices.

    Your reference to Table 2 in SPRUF6F_R1 implies to me that you are using EMA_CS0 to connect to the THS1206, probably because the names used on the THS1206 are coincidentally CS0 and CS1. But if that is the case, there is no direct relationship between the chip select numbers on the THS1206 and on the C6748. In fact, the connections shown in SLAA094_R1 Figure 29 are a more correct choice although CS2 would be the appropriate one for the C6748 for an asynchronous device interface.

    Perhaps the discussion needs to continue after we clarify how your signals are connected.

    Regards,
    RandyP