PCF50606
From Openmoko
| NOTE: this page is horribly outdated and refers to GTA01v3. Please see
http://svn.openmoko.org/trunk/doc/hardware/ (*/pmu-voltage.txt) for up-to-date information. If somebody could put this in the wiki here, it would be great |
Neo1973_Power_Management Seems to have updated information now, covering more than the pmu-voltage.txt file - and not derivable from there. Should this page be deleted?--Speedevil 01:39, 21 February 2007 (CET)
Overview
The PCF50606 is the Power Management Unit used in GTA01. Apparently this unit is very popular in MP3 players, as the Rockbox project has talked a lot about writing a driver for it (but hasn't completed any, as far as we know).
Configuration of this PMU is done via an I2C bus from the S3C2410.
The PMU also connects to EINT16 and thus can issue interrupts to the main CPU.
Voltage Regulators
| Name | Voltage | Users |
|---|---|---|
| DCD | 3.3V | NAND FLASH, SDRAM, S3C2410 Memory and IO |
| DCUD | 1.8V | S3C2410 Core |
| DCDFB | 3.3V | I/O 3.3V, LM4857 Digital, Vibrator |
| D3 | 3.3V | WM8976 Audio Codec, |
| D2 | 0.9..3.3V (variable) | microSD Slot |
| D1 | 3.3V | VRF (GSM RF ?) |
| IO | 2.8V | VTCXO |
| LP | 3.3V | LP LCM + Panel? |
Register dump after bootup
Since u-boot has built-in I2C support for the S3C2410, we can read out the register set of the PC50606 using a simple command:
GTA01 # imd 0x08 0x00 0x3c
0000: 4d 7b 48 01 00 00 00 00 64 05 43 23 00 00 01 01 M{H.....d.C#....
0010: 00 7f 7f 3f 07 3f 1f ff 00 00 ff d0 c8 00 30 88 ...?.?........0.
0020: 00 83 30 f8 c2 c4 90 f8 01 05 14 10 55 13 00 00 ..0.........U...
0030: 00 00 00 00 0e 80 4d 4d 04 00 00 00 ......MM....
