Wifi
Wireless Networking
The PS3 contains two wireless technologies, Wi-Fi 802.11b/g and Bluetooth 2.0. It is not possible for both to be used at the same time, so the PS3 alternates between Wi-Fi and Bluetooth communication at a very fast frequency using time division multiplexing. Both wireless capabilities are powered by the Marvell 88W8580 chip. In models CECHL and later, this wireless module became part of the motherboard, and is no longer on a separate daughterboard.
Hardware
IEEE 802.11b/g wireless network and BlueTooth 2.0 EDR controller chip: Marvell 88W8580
The Wi-Fi module uses two internal antennas and allows the PS3 to communicate with access points and Wi-Fi devices like the Sony PSP. The Wi-Fi module contains a 16MB ISSI SDRAM memory chip, and a 64KB SPI Serial Interface NOR Macronix flash chip.
| Type | Size | Speed | Voltage | Packaging | Manufacturer | Serialnumber | Description |
|---|---|---|---|---|---|---|---|
| NOR Flash | 64KB | 85MHz | 3V | 8-pin | Macronix | MX25L512MC-12G | PS3 Wi-Fi firmware chip |
| SDRAM | 16MB | 166MHz, 6ns | 3.3V | 90-ball | ISSI | IS42S32400B-6BL | PS3 Wi-Fi working memory chip |
| SDRAM | 16MB (8Mx16) | 166MHz, 6ns CAS3 | 3.3V | 400mil 54-PIN TSOP-II | Nanya | NT5SV8M16FS-6K | PS3 Wi-Fi working memory chip (CECHJ and later models) |
Macronix MX25L512MC-12G
Datasheet: Macronix_MX25L512MC-12G.pdf (1.87 MB)
| Pad # | Name | Description |
|---|---|---|
| 1 | CS# | Chip Select |
| 2 | SO | Serial Data Output |
| 3 | WP# | Write Protection |
| 4 | GND | Ground |
| 5 | SI | Serial Data Input |
| 6 | SCLK | Clock Input |
| 7 | HOLD# | Hold, to pause the device without deselecting the device |
| 8 | VCC | +3.3V Power Supply |
ISSI IS42S32400B-6BL
Nanya NT5SV8M16FS-6K
Datasheet: Nanya NT5SV8M16FS-6K (128 Mbit, 16 MB) : NTC-SDR-128M-F-R13.pdf
Software
eCos is used to provide the Playstation's Wi-Fi support. eCos is an open source real-time operating system (RTOS). It is licensed under a modified version of GPL that allows the use of non GPL licensed code to be linked with eCos.
References:
http://www.ecoscentric.com/ecos/ http://ecos.sourceware.org/