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@@ -1199,40 +1199,40 @@ progress is made in the main program.
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--
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0xF0 (240) => XDEV CMD
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0xF0 (240) => XDEV CMD
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(R/W Issue 4 Only) (soft reset = 0x80)
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R/W Issue 4 Only - (soft reset = 0x80)
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* Select Mode
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Select Mode
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(R)
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(R)
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bit 7 = 1 if in select mode
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bit 7 = 1 if in select mode
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bits 1:0 indicate currently selected device
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bits 1:0 = indicate currently selected device
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00 = none
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00 = none
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01 = Xilinx DNA
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01 = Xilinx DNA
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10 = Xilinx XADC
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10 = Xilinx XADC
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(W)
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(W)
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bit 7 = 1 to enter select mode, 0 to enter selected device mode (no other bits have effect)
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bit 7 = 1 to enter select mode, 0 to enter selected device mode (no other bits have effect) ***
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bit 6 = 1 to change selected device
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bit 6 = 1 to change selected device **
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bits 1:0 selected device
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bits 1:0 = selected device
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00 = none
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00 = none
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01 = Xilinx DNA
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01 = Xilinx DNA
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10 = Xilinx XADC
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10 = Xilinx XADC
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* Xilinx DNA Mode
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Xilinx DNA Mode
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(R)
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(R)
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bit 0 = dna bit (serial stream shifts left)
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bit 0 = dna bit (serial stream shifts left)
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the first eight bits read will indicate the length of the following dna bits
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the first eight bits read will indicate the length of the following dna bits
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(W)
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(W)
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bit 7 = 1 to enter select mode (write has no other effect)
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bit 7 = 1 to enter select mode (write has no other effect) *
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otherwise causes dna string to reload, ready for fresh read
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otherwise causes dna string to reload, ready for fresh read
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* Xilinx XADC Mode (Documented in Xilinx Series 7 UG480)
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Xilinx XADC Mode (Documented in Xilinx Series 7 UG480)
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(R)
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(R)
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bit 6 = 1 if XADC is busy with conversion (BUSY)
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bit 6 = 1 if XADC is busy with conversion (BUSY)
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bit 1 = 1 if XADC conversion completed since last read (EOC, read clears)
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bit 1 = 1 if XADC conversion completed since last read (EOC, read clears)
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bit 0 = 1 if XADC conversion sequence completed since last read (EOS, read clears)
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bit 0 = 1 if XADC conversion sequence completed since last read (EOS, read clears)
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(W)
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(W)
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bit 7 = 1 to enter select mode (write has no other effect)
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bit 7 = 1 to enter select mode (write has no other effect) *
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bit 6 = 1 to reset XADC (RESET)
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bit 6 = 1 to reset XADC (RESET)
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bit 0 = 1 to start conversion (CONVST)
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bit 0 = 1 to start conversion (CONVST)
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* Re-enter select mode at any time by writing to the register with bit 7 set
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* Re-enter select mode at any time by writing to the register with bit 7 set
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* Select a device to communicate with by writing to the register with bits 6 & 7 set
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** Select a device to communicate with by writing to the register with bits 6 & 7 set
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* Exit select mode by writing zero to bit 7; thereafter the particular device is attached to the nextreg
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*** Exit select mode by writing zero to bit 7; thereafter the particular device is attached to the nextreg
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0xF8 (248) => XADC REG
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0xF8 (248) => XADC REG
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(R/W Issue 4 Only) (hard reset = 0)
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(R/W Issue 4 Only) (hard reset = 0)
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