Visible to Intel only — GUID: mhi1439831780190
Ixiasoft
Visible to Intel only — GUID: mhi1439831780190
Ixiasoft
12.2.1. Configurable Traffic Generator 2.0 Configuration Options
Configuration Syntax
The test bench includes an example test procedure.
The syntax for writing to a configuraton register is as follows:
tg_send_cfg_write_<index>(<Register Name>, <Value to be written>);The index value represents the index of the memory interface (which is usually 0, but can be 0/1 in ping-pong PHY mode).
The register name values are listed in the tables of configuration options, and can also be found in the altera_emif_avl_tg_defs.sv file, in the same directory as the test bench.
The final configuration command must be a write of any value to TG_START, which starts the traffic generator for the specified interface.
Configuration Options
Toolkit GUI Tab | Toolkit GUI Parameter | Register Name | Description |
---|---|---|---|
-- | -- | TG_START | Tells the system to perform a write to this register to initiate traffic generation test. |
Loops | Loops | TG_LOOP_COUNT | Specifies the number of read/write loops to perform before completion of the test stage. A loop is a single iteration of writes and reads. Upon completion, the base address is either incremented (SEQ or RAND_SEQ) or replaced by a newly generated random address (RAND or RAND_SEQ). |
Writes per block | TG_WRITE_COUNT | Specifies the number of writes to be performed in each loop of the test. | |
Reads per block | TG_READ_COUNT | Specifies the number of reads to be performed in each loop of the test. This register must have the same value as TG_WRITE_COUNT. | |
-- | TG_WRITE_REPEAT_COUNT | Specifies the number of times each write transaction is repeated. | |
-- | TG_READ_REPEAT_COUNT | Specifies the number of times each read transaction is repeated. | |
Reads per block | TG_BURST_LENGTH | Configures the length of each write/read burst to memory. | |
-- | -- | TG_CLEAR_FIRST_FAIL | Clears the record of first failure occurrence. New failure information such as expected data, read data, and fail address, is written to the corresponding registers following the next failure. |
-- | -- | TG_TEST_BYTEEN | Toggles the byte-enable (data mask enable) register within the traffic generator which allows the current test to use byte-enable signals. |
-- | -- | TG_DATA_MODE | Specifies the source of data used for data signal generation during the test. Set to 0 to use pseudo-random data. Set to 1 to use user-specified values stored in the static data generators. |
-- | -- | TG_BYTEEN_MODE | Specifies the source of data used for byte-enable signal generation during the test. Set to 0 to use pseudo-random data. Set to 1 to use user-specified values stored in the static data generators. |
Toolkit GUI Tab | Toolkit GUI Parameter | Register Name | Description |
---|---|---|---|
Address | Start Address | TG_SEQ_START_ADDR_WR_L | Specifies the sequential start address (lower 32 bits). |
Start address | TG_SEQ_START_ADDR_WR_H | Specifies the sequential start address (upper 32 bits) | |
Address mode | TG_ADDR_MODE_WR | Specifies how write addresses are generated by writing the value in parentheses to the register address. Values are: randomize the address for every write (0), increment sequentially from a specified address (1), increment sequentially from a random address (2), or perform one hot addressing (3). | |
Number of sequential address | TG_RAND_SEQ_ADDRS_WR | Specifies the number of times to increment sequentially on the random base address before generating a new random write address. | |
Return to start address | TG_RETURN_TO_START_ADDR | Return to start address in deterministic sequential address mode (if 1 is written to TG_ADDR_MODE_WR) after every loop of transactions. | |
Rank | Mask Mode | TG_RANK_MASK_EN | Specifies the rank masking mode by writing the value in parentheses to the register address. Values are: disable rank masking (0), maintain a static rank mask (1), cycle through rank masks incrementally (2). | |
Bank Address | Mask Mode | TG_BANK_MASK_EN | Specifies the bank masking mode by writing the value in parentheses to the register address. Values are: disable bank masking (0), maintain a static bank mask (1), cycle through bank masks incrementally (2), cycle through only three consecutive bank masks (3). | |
Row | Mask Mode | TG_ROW_MASK_EN | Specifies the mode for row masking by writing the value in parentheses to the register address. Values are: disable row masking (0), maintain a static row mask (1), cycle through row masks incrementally (2). | |
Bank Group | Mask Mode | TG_BG_MASK_EN | Specifies the mode for bank group masking by writing the value in parentheses to the register address. Values are: disable bank group masking (0), maintain a static bank group mask (1), cycle through bank group masks incrementally (2). | |
Rank | Mask Value | TG_RANK_MASK | Specifies the initial rank to be masked into the generated traffic generator address. | |
Bank Address | Mask Value | TG_BANK_MASK | Specifies the initial bank to be masked into the generated traffic generator address. | |
Row | Mask Value | TG_ROW_MASK | Specifies the initial row to be masked into the generated traffic generator address. | |
Bank Group | Mask Value | TG_BG_MASK | Specifies the initial bank group to be masked into the generated traffic generator address. | |
Sequential Address Increment | TG_SEQ_ADDR_INCR | Specifies the increment to use when sequentially incrementing the address. This value is used by both deterministic sequential addressing and random sequential addressing. (Refer to TG_ADDR_MODE_WR) | |
Start Address | TG_SEQ_START_ADDR_RD_L | Specifies the sequential start read address (lower 32 bits). | |
TG_SEQ_START_ADDR_RD_H | Specifies the sequential start read address (upper 32 bits). | ||
Address Mode | TG_ADDR_MODE_RD | Similar to TG_ADDR_MODE_WR but for reads. | |
Number of sequential address | TG_RAND_SEQ_ADDRS_RD | Specifies the number of times to increment the random sequential read address. |
Toolkit GUI Tab | Toolkit GUI Parameter | Register Name | Description |
---|---|---|---|
Data | Seed/Fixed Pattern | TG_DATA_SEED | Specifies an initial value to the data generator corresponding to the index value. |
PRBS and Fixed Pattern radio buttons | TG_DATA_MODE | Specifies whether to treat the initial value of the data generator of corresponding index as a seed for generating pseudo-random data (value of 0) or to keep the initial value static (value of 1). |
Toolkit GUI Tab | Toolkit GUI Parameter | Register Name | Description |
---|---|---|---|
Data | Seed/Fixed Pattern | TG_BYTEEN_SEED | Specifies an initial value to the byte-enable generator corresponding to the index value. |
PRBS and Fixed Pattern radio buttons | TG_BYTEEN_MODE | Specifies whether to treat the initial value of the byte-enable generator of corresponding index as a seed and generate pseudo-random data (value of 0) or to keep the initial value static (value of 1). |