
Symmetric Key Hardware Accelerator (SKHA)
Freescale Semiconductor
35-17
35.3.4
SKHA Logic Block
This block contains the internal address decoder, addressable registers (key data, key size, data size, mode,
context data, and status), interrupt and error logic, DMA input/output request control, and the core engine
as shown in
Figure 35-21. SKHA Logic Block Diagram
35.3.4.1
Address Decode Logic
The address decoder translates the internal address to write to the proper SKHA registers.
35.3.4.2
Error Interrupt/Status Logic
This block generates the error interrupt if the host performs an illegal operation. The cause of the error is
flagged in the SKHA error status register (
Section 35.2.5, “SKHA Error Status and Mask Registers
) and an interrupt is triggered to the interrupt controller. If an error occurs, the SKHA
core engine is halted. This prevents the core from continuing operation with invalid data. These error
interrupts may be masked off selectively by setting the appropriate bits in the SKHA error status mask
register (
Section 35.2.5, “SKHA Error Status and Mask Registers (SKESR, SKESMR)”
)
35.3.4.3
DMA Request Control
This block is the control for the input and output DMA request signals. It monitors the input and output
FIFO levels and DMA request levels (SKCR[ODMAL & IDMAL]) to determine when a DMA request
should be triggered to the DMA controller.
In Block
Out Block
Address
Decoder
Mode
Register
Key
Register
Register
Registers
SKHA LOGIC
In
te
rn
al Bus
Interf
ac
e
Data Size
SKHA
Core
FIF
O Interf
ac
es
Key Size
Co
nte
x
t Data
Register
Status
Error Status
Block
DMA Request
Control
To DMA
Controller
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...