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| author | Ashish Chaudhari <ashish@ettus.com> | 2014-10-08 09:52:12 -0700 |
|---|---|---|
| committer | Ashish Chaudhari <ashish@ettus.com> | 2014-10-09 18:06:08 -0700 |
| commit | d655137c93c7622f86c0794efcf0044b009b1fb4 (patch) | |
| tree | dc0c2592bb7cf74c2138fdaceb76d3e69f25353e | |
| parent | d61baf0aea29645d75fc2bf6484f84530e0033a5 (diff) | |
| download | uhd-d655137c93c7622f86c0794efcf0044b009b1fb4.tar.gz uhd-d655137c93c7622f86c0794efcf0044b009b1fb4.tar.bz2 uhd-d655137c93c7622f86c0794efcf0044b009b1fb4.zip | |
x300: Reduced the TX buffer from 576K to 520K
- Trading performance for stability. This helps meet timing at the cost of a shorter processing time window between sends.
- Bumped FPGA compat number to 8
| -rw-r--r-- | host/lib/usrp/x300/x300_fw_common.h | 2 | ||||
| -rw-r--r-- | host/lib/usrp/x300/x300_impl.hpp | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/host/lib/usrp/x300/x300_fw_common.h b/host/lib/usrp/x300/x300_fw_common.h index f1ff5ce7d..6cf4834b3 100644 --- a/host/lib/usrp/x300/x300_fw_common.h +++ b/host/lib/usrp/x300/x300_fw_common.h @@ -31,7 +31,7 @@ extern "C" { #define X300_FW_COMPAT_MAJOR 3 #define X300_FW_COMPAT_MINOR 0 -#define X300_FPGA_COMPAT_MAJOR 7 +#define X300_FPGA_COMPAT_MAJOR 8 //shared memory sections - in between the stack and the program space #define X300_FW_SHMEM_BASE 0x6000 diff --git a/host/lib/usrp/x300/x300_impl.hpp b/host/lib/usrp/x300/x300_impl.hpp index ff0af9069..8abdee48c 100644 --- a/host/lib/usrp/x300/x300_impl.hpp +++ b/host/lib/usrp/x300/x300_impl.hpp @@ -55,7 +55,7 @@ static const std::string X300_FW_FILE_NAME = "usrp_x300_fw.bin"; static const double X300_DEFAULT_TICK_RATE = 200e6; //Hz static const double X300_BUS_CLOCK_RATE = 166.666667e6; //Hz -static const size_t X300_TX_HW_BUFF_SIZE = 0x90000; //576KiB +static const size_t X300_TX_HW_BUFF_SIZE = 520*1024; //512K SRAM buffer + 8K 2Clk FIFO static const size_t X300_TX_FC_RESPONSE_FREQ = 8; //per flow-control window static const size_t X300_RX_SW_BUFF_SIZE_ETH = 0x2000000;//32MiB For an ~8k frame size any size >32MiB is just wasted buffer space |