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author | Johnathan Corgan | 2010-02-28 12:47:43 -0800 |
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committer | Johnathan Corgan | 2010-02-28 12:47:43 -0800 |
commit | a2c00f5cff7407ff10fc6c812d06fefe52c0b6a3 (patch) | |
tree | 77121ca27b951f9bd687dbba33f6a9383ac74d5a /usrp2/fpga/control_lib/newfifo/fifo_spec.txt | |
parent | db29a2cfc18554ae0a3c55a4e13dc4cbfa86317f (diff) | |
download | gnuradio-a2c00f5cff7407ff10fc6c812d06fefe52c0b6a3.tar.gz gnuradio-a2c00f5cff7407ff10fc6c812d06fefe52c0b6a3.tar.bz2 gnuradio-a2c00f5cff7407ff10fc6c812d06fefe52c0b6a3.zip |
Remove usrp1 and usrp2 FPGA files. These are now hosted at:
git://ettus.sourcerepo.com/ettus/fpga.git
...under the 'usrp1' and 'usrp2' top-level directories.
Diffstat (limited to 'usrp2/fpga/control_lib/newfifo/fifo_spec.txt')
-rw-r--r-- | usrp2/fpga/control_lib/newfifo/fifo_spec.txt | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/usrp2/fpga/control_lib/newfifo/fifo_spec.txt b/usrp2/fpga/control_lib/newfifo/fifo_spec.txt deleted file mode 100644 index 133b9fa8e..000000000 --- a/usrp2/fpga/control_lib/newfifo/fifo_spec.txt +++ /dev/null @@ -1,36 +0,0 @@ - - -FIFO and Buffer Interface Spec - -Buffer Interface Data Wires -- matches fifo36 - DATA[31:0] - FLAGS[3:0] - Bit 0 SOP - Bit 1 EOP - If SOP=1 && EOP=1, OCC contains error flags - Bits 3:2 OCC[1:0] --> 00 = all 4 bytes - 01 = 1 byte - 10 = 2 bytes - 11 = 3 bytes - -fifo36 --> {OCC[1:0],EOP,SOP,DATA[31:0]} - OCC same as buffer interface - -fifo19 --> {OCC,EOP,SOP,DATA[15:0]} - Doesn't fit well into BRAM, dist RAM ok - OCC = 1 means last word is half full - = 0 means last word is full - -fifo18 --> {EOP,SOP,DATA[15:0]} - No half-word capability? Should we drop sop instead? - -Control Wires - Data into FIFO - SRC_RDY_i Upstream has data for me - DST_RDY_o I have space - Transfer occurs if SRC_RDI_i && DST_RDY_o - -Control Wires - Data out of FIFO - SRC_RDY_o I have data for downstream - DST_RDY_i Downstream has space - Transfer occurs if SRC_RDI_o && DST_RDY_i - |