Allwinner A20 - Power Management

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 16 / 812
● Up to two IR controllers
● Programmable FIFO thresholds
SATA
● One SATA Host controller
● Support SATA 1.5Gb/s and SATA 3.0Gb/s
● Comply with SATA spec 2.6
● Support external SATA(eSATA)
CAN
● One CAN bus controller
● Support the CAN2.0 A/B protocol specification
● Programmable data rate up to 1Mbps
Keypad
● One keypad matrix interface up to 8 rows and 8 colums
● Interrupt for key press or key release
● Internal debouncing filter to prevent switching noises
LRADC
● 6-bit resolution
● Voltage input range between 0V to 2V
● Support hold key and continuous key
● Support single key,normal key and continuous key
PWM
● 2 PWM channels outputs
● Support cycle mode and pulse mode
● The pre-scale is from 1 to 64
Security System
● Crypto Engine
– Support AES, DES, 3DES, SHA-1, MD5
– Support ECB/CBC modes for AES/DES/3DES
– 128-bit, 192-bit and 256-bit key size for AES
– 160-bit hardware PRNG with 192-bit seed
●
Security JTAG
Power Management
● Flexible PLL clock generator and OSC for 32KHz
● Flexible clock gate
● Support DVFS for CPU frequency and voltage adjustment