Altera Mentor Verification IP Altera Edition AMBA AXI3/4TM - Manual (Page 89)

SystemVerilog AXI3 and AXI4 Slave BFMs
Slave BFM Configuration
Mentor VIP AE AXI3/4 User Guide, V10.2b 71
September 2013
A slave BFM has configuration fields that you can set with the set_config() function to
configure timeout factors, slave exclusive support, setup and hold times, etc. You can also get
the value of a configuration field via the
get_config() function.
The full list of configuration fields is described in Table 4-2 below.
**_ID_WIDTH ID signal width in bits. This applies to the RID and WID signals.
Refer to the AMBA AXI Protocol specification for more details.
Default: 4.
AXI4_USER_WIDTH (AXI4) User data signal width in bits. This applies to the
ARUSER, AWUSER, RUSER, WUSER and BUSER signals.
Refer to the AMBA AXI Protocol specification for more details.
Default: 8.
AXI4_REGION_MAP_SIZE (AXI4) Region signal width in bits. This applies to the
ARREGION and AWREGION signals. Refer to the AMBA AXI
Protocol specification for more details. Default: 16.
Table 4-2. Slave BFM Configuration
Configuration Field Description
Timing Variables
**_CONFIG_SETUP_TIME The setup-time prior to the active edge of
ACLK, in units of simulator time-steps for
all signals.
1
Default: 0.
**_CONFIG_HOLD_TIME The hold-time after the active edge of
ACLK, in units of simulator time-steps for
all signals.
1
Default: 0.
**_CONFIG_MAX_TRANSACTION_
TIME_FACTOR The maximum timeout duration for a
read/write transaction in clock cycles.
Default: 100000.
AXI_CONFIG_TIMEOUT_MAX_DATA_TRANSFER (AXI3) The maximum number of write
data beats that the AXI3 BFM can
generate as part of write data burst of
write transfer. Default: 1024.
**_CONFIG_BURST_TIMEOUT_FACTOR The maximum delay between the
individual phases of a read/write
transaction in clock cycles. Default:
10000.
**_CONFIG_MAX_LATENCY_AWVALID_
ASSERTION_TO_AWREADY
The maximum timeout duration from the
assertion of AWVALID to the assertion of
AWREADY in clock periods (default
10000).
**_CONFIG_MAX_LATENCY_ARVALID_
ASSERTION_TO_ARREADY
The maximum timeout duration from the
assertion of ARVALID to the assertion of
ARREADY in clock periods (default
10000).
Table 4-1. Slave BFM Signal Width Parameters
Signal Width Parameter Description