Intel E3815 FH8065301567411 Data Sheet

Product codes
FH8065301567411
Page of 5308
 
Low Power Engine (LPE) for Audio (I
2
S)
Intel
®
 Atom™ Processor E3800 Product Family
Datasheet
2799
21.2
Features
The LPE Audio Subsystem consists of the following:
Integrated, power-efficient 32-bit architecture core with 24-bit audio processing 
instructions
Core processing speeds up to 343 MHz
Closely Coupled Memories (CCMs)
— 80KB Instruction RAM
— 160KB Data RAM
— 48KB Instruction Cache
— 96KB Data Cache
Very low-power consumption coupled with high-fidelity 24-bit audio
Dual-issue, static, super-scalar VLIW processing engine
Mode-less switching between 16-, 24-, and 64-bit dual-issue instructions
Dual MACs which can operate with 32 x 16-bit and/or 24 x 24-bit operands
Inter-Process Communication (IPC) mechanism to communicate with the SoC 
Processor Core including 4KB mailbox memory
Flexible audio interfaces include three SSPs with I
2
S port functionality for  
I-directional audio transfers
— I
2
S mode supports PCM payloads 
— Frame counters for all I
2
S ports
High Performance DMA
— DMA IP to support multiple outstanding transactions
— Interleaved scatter-gather support for Audio DMA transfers
Clock switching logic including new frequency increments
Table 224. LPE Signals 
Signal Name
Direction
Plat. Power
Description
LPE_I2S2[0:2]_CLK
I/O
V1P8S
Clock signal for I
2
S
LPE_I2S2[0:2]_FRM
I/O
V1P8S
Frame select signal for I
2
S
LPE_I2S2[0:2]_DATAIN
I
V1P8S
RX data for I
2
S
LPE_I2S2[0:2]_DATAOUT
O
V1P8S
TX data for I
2
S
All LPE signals are muxed and may be used by other functions.