Chainout Adder - Intel Agilex User Manual

Latency Data Input Register
fp32_add
er_a_clke
n
1 Disable
2 Enable
≥3 Enable
≥4 Enable
Table 37. Supported Register Configurations For FP16 Vector Three Mode
Latency Data Input Register
accumu fp32_ad
late_clk der_a_c
en lken
1 Disable Disable
2 Enable Enable
≥3 Enable Enable
≥4 Enable Enable

4.2.2. Chainout Adder

You can use the output chaining path to add results from another DSP block.
Support for certain operation modes:
• Multiply-add or multiply-subtract mode
• Vector one mode
• Vector two mode
® ™
Intel Agilex Variable Precision DSP Blocks User Guide
72
4. Intel Agilex Variable Precision DSP Blocks Design Considerations
Adder 1st Adder
Pipeline 2nd
Register Pipeline
Register
fp16_mul fp32_add fp32_add
t_input_c er_a_chai er_a_chai
lken nin_pl_cl nin_2nd_
ken pl_clken
Disable Disable Disable
Enable Disable Disable
Enable Disable, Disable,
enable enable
Enable Disable, Disable,
enable enable
Adder Adder
1st
Pipeline Pipeline
Registe Registe
r
fp16_m accum_ accum_
ult_inp pipeline 2nd_pip
ut_clke _clken eline_cl
n
Disable Disable Disable
Enable Disable Disable
Enable Disable, Disable,
enable enable
Enable Disable, Disable,
enable enable
Multiplier Multiplier
1st 2nd
Pipeline Pipeline
Register Register
mult_pipe mult_2nd
line_clke _pipeline
n _clken
Disable Disable
Disable Disable
Disable Disable
Disable Disable
Multipli Multipli
2nd er 1st er 2nd
Pipeline Pipeline
Registe Registe
r r r
mult_pi mult_2 accum_
peline_ nd_pipe adder_c
clken line_clk
ken en
Disable Disable
Disable Disable
Disable Disable
Disable, Enable
enable
UG-20213 | 2019.04.02
Adder Adder
Input Pipeline
Register Register
adder_inp adder_pl_ output_cl
ut_clken clken
Disable Disable Enable
Disable Disable Enable
Enable Enable Enable
Enable Enable Enable
Adder Input Adder
Register Pipeline
Registe
r
adder_i adder_p
nput_cl l_clken
lken ken
Disable Disable Disable
Disable Disable Disable
Enable Enable Enable
Enable Enable Enable
Send Feedback
Output
Register
ken
Output
Registe
r
output_
clken
Enable
Enable
Enable
Enable