NP2150 Hardware - OpenNoah/OpenNoah.github.io GitHub Wiki
Overview
| Hardware | Part number | Features |
|---|---|---|
| CPU | Ingenic JZ4740 PM DS | 336MHz JzRISC 32bits (mipsel) |
| SDRAM | HY57V561620FTP-6 | 64MiB (2x 4Banks x 4M x 16bits) |
| NAND | K9GAG08U0M | 2GiB (4096Blocks x 128Pages x (4k+128)Bytes) |
| LCD | AT043TN24 | 480x272 18-bit parallel mode |
| USB hub | AU9254 | 4-port USB 1.1 hub controller |
| I2C IO port | CAT9555Y1 | 16-bit IO port with interrupt |
Interfaces
| Interface | Availability | Comment |
|---|---|---|
| UART | UART0 | ttyS0 default: 115200bps, 8n1 |
| JTAG | Yes | |
| Boot select | Yes | USB boot working |
Express card
Express card is connected via a 4-prot USB hub controller chip.
Presumably the USB hub chip also serves the USB-HOST port.
Keypad layout
Matrix keyboard is connected to the I2C IO port chip.
GPIO configuration
| Group | Config | Function |
|---|---|---|
| PA0-PA31 | AF0 | Memory controller: Data bus |
| PB0-PB16 | AF0 | Memory controller: Address bus |
| PB17-PB18 | INPUT | ? |
| PB19-PB24 | AF0 | Memory controller: SDRAM specific |
| PB25-PB26 | AF0 | Memory controller: Chip select |
| PB27 | INT, HIGH/LOW | MMC/SD detection, 1: Present |
| PB28 | INPUT | ? |
| PB29 | INT, LOW | ? |
| PB30 | INPUT | ? |
| PB31 | AF0 | Memory controller: Write enable 0 |
| PC0-PC17 | AF0 | LCD controller: Data bus |
| PC18-PC21 | AF0 | LCD controller: Clock & sync |
| PC22 | OUTPUT | LCD Enable, 0: on |
| PC23 | OUTPUT | LCD Enable, 1: on |
| PC24-PC26 | AF0 | Memory controller: Write enable 1-3 |
| PC27 | OUTPUT | MMC/SD power, 0: on |
| PC28-PC29 | AF0 | Memory controller: NAND RD&WR enables |
| PC30 | INPUT | Memory controller: NAND ready/busy |
| PC31 | INPUT | JTAG(SEL=0)/UART(SEL=1) select |
| PD0-PD1 | INPUT | ? |
| PD2 | INT, LOW | ? |
| PD3 | INT, LOW | ? |
| PD4 | OUTPUT | LCD backlight, 1: on |
| PD5 | INPUT | ? |
| PD6 | INT, LOW | Express card detection, 0: inserted |
| PD7 | INPUT | ? |
| PD8-PD13 | AF0 | MMC/SD controller |
| PD14 | INT, LOW | Express card switch, 0: on |
| PD15 | OUTPUT | ? |
| PD16 | OUTPUT | ALCOR USB hub power, 1: on |
| PD17 | OUTPUT | Express card power, 1: on |
| PD18 | AF0 | SSI |
| PD19 | OUTPUT | SSI CE0? |
| PD20-PD21 | AF0 | SSI |
| PD22 | OUTPUT | ? |
| PD23-PD24 | AF1 | I2C |
| PD25-PD26 | AF1 | UART0 |
| PD27 | AF0 | PWM4 output, LCD backlight, 1: on |
| PD28 | OUTPUT | ? |
| PD29 | AF1/0 | Power button, 0: pressed |
| PD30 | OUTPUT | Matrix keyboard power, 0: on |
| PD31 | OUTPUT | Express card LED, 0: on(also requires USB hub power and Express card switch on) |