Ingenic Halley5 - Halley5 Core board; Main Components of the Core Board; Block Function Description of the Core Board

Halley5 Core board
X2000 Development Kit User Manual
Copyright® 2005-2021 Ingenic Semiconductor Co., Ltd. All rights reserved.
4
2 Halley5 Core board
2.1 Main Components of the Core Board
 CPU: Ingenic X2000 processor, built-in 128MBytes LPDDR3, running at 1.2GHz frequency,
supporting hardware Floating Point Unit and SIMD 128 instruction set, and in 270-ball BGA package,
12mm x 12mm x 1.2mm outline, 18 x 18 matrix ball grid array and 0.65mm ball pitch.
 FLASH: 256MBytes SPI NAND Flash, which can be also compatible with large capacity SPI NOR
Flash.
 POWER: PMIC G2257Q51U (4* DC-DC buck converters +1*LDO) and 2 LDOs.
 Wi-Fi & Bluetooth Module: AMPAK AP6256, which complies with IEEE 802.11 b/g/n/ac standard
and Bluetooth 5.0 with Bluetooth Low Energy.
2.2 Block Function Description of the Core Board
2.2.1 Power Circuit
The Power supply to the Halley5 core board is derived from the base board, which is sourced by a 5V DC
power input. The core board carries a PMIC and 2 LDOs, and the PMIC contains 4 DC-DC buck converters as
well as a LDO. In addition, the core board provides a 3.3V power supply to the base board.
The DC-DC buck converters supports 2.7V to 5.5V DC input voltage range, fixed 1.5MHz switching frequency,
and 3A maximum continuous output current, in QFN4X4-24 package. The LDO RT9078 supports 1.2V to 5.5V
DC input voltage range and 300mA output current, in SOT_23 package.
Figure 2-1 shows the power circuit of Halley5 core board. The main power supply of the system is VSYS, which
supplies power to U7 to output VDDIORTC, and then VDDIORTC supplies power to U6 to output VDDRTC.
When the RTC module of X2000 is powered on, the signal PWRON will be asserted as the enable signal of
1V8P output, then 1V8P enable other DC-DC bucks to supply power 1V2P, 3V3P and 0V9P to X2000.