Microsemi SmartFusion2 Manual page 12

Table 3-1 • Hard Multiplier Accumulator Ports - Normal Mode (continued)
Signal Direction
CARRYOUT Output
CDOUT Output
Cascade
Table 3-2 lists the Hard Multiplier Accumulator port signals for Dot Product mode.
Table 3-2 • Hard Multiplier Accumulator Ports - Dot Product Mode
Signal Direction
A0 Input
B0 Input
A1 Input
B1 Input
C Input
CLK Input
A0_ACLR_N Input
A0_SCLR_N Input
A0_EN Input
B0_ACLR_N Input
B0_SCLR_N Input
B0_EN Input
A1_ACLR_N Input
A1_SCLR_N Input
A1_EN Input
B1_ACLR_N Input
B1_SCLR_N Input
B1_EN Input
C_ACLR_N Input
C_SCLR_N Input
C_EN Input
CARRYIN Input
P_ACLR_N Input
12
Description
This bit can be used to extend the adder in the fabric.
CARRYOUT = C[43] ^ D[43] ^ P[44]
Cascade output of result P. CDOUT is a copy of P, sign-extended to 44
bits. The entire bus must either be dangling or drive an entire CDIN of
another MATH block in Normal mode.
Description
Input data A0, 2- 9 bits wide
Input data B0, 2- 9 bits wide
Input data A1, 2- 9 bits wide
Input data B1, 2- 9 bits wide
Input data C, 2- 35 bits wide
Input clock for all registers
Asynchronous reset for data A0 registers
Synchronous reset for data A0 registers
Enable for data A0 registers
Asynchronous reset for data B0 registers
Synchronous reset for data B0 registers
Enable for data B0 registers
Asynchronous reset for data A1 registers
Synchronous reset for data A1 registers
Enable for data A1 registers
Asynchronous reset for data B1 registers
Synchronous reset for data B1 registers
Enable for data B1 registers
Asynchronous reset for data C, Carry In registers
Synchronous reset for data C, Carry In registers
Enable for data C, Carry In registers
Carry In input for operand C
Asynchronous reset for result P, CDOUT, Overflow/Carryout registers