| Wolfgang Denk | e1ebacb | 2005-09-25 15:59:01 +0200 | [diff] [blame] | 1 | Notes on the Vibren PXA255 IDP. |
| 2 | |
| 3 | Chip select usage: |
| 4 | |
| 5 | CS0 - flash |
| 6 | CS1 - alt flash (Mdoc or main flash) |
| 7 | CS2 - high speed expansion bus |
| 8 | CS3 - Media Q, low speed exp bus |
| 9 | CS4 - low speed exp bus |
| 10 | CS5 - low speed exp bus |
| 11 | - IDE: offset 0x03000000 (abs: 0x17000000) |
| 12 | - Eth: offset 0x03400000 (abs: 0x17400000) |
| 13 | - core voltage latch: offset 0x03800000 (abs: 0x17800000) |
| 14 | - CPLD: offset 0x03C00000 (abs: 0x17C00000) |
| 15 | |
| 16 | PCMCIA Power control |
| 17 | |
| 18 | MAX1602EE w/ code pulled high (Cirrus code) |
| 19 | vx = 5v |
| 20 | vy = 3v |
| 21 | |
| 22 | Bit pattern |
| 23 | PWR 3,2,1,0 |
| 24 | vcc vpp A1VCC A0VCC A1VPP A0VPP |
| 25 | ===================================================== |
| 26 | 0 0 0 0 0 0 0x0 |
| 27 | 3 (vy) 0 1 0 1 1 0xB |
| 28 | 3 (vy) 3 (vy) 1 0 0 1 0x9 |
| 29 | 3 (vy) 12(12in) 1 0 1 0 0xA |
| 30 | 5 (vx) 0 0 1 1 1 0x7 |
| 31 | 5 (vx) 5 (vx) 0 1 0 1 0x5 |
| 32 | 5 (vx 12(12in) 0 1 1 0 0x6 |
| 33 | |
| 34 | Display power sequencing: |
| 35 | |
| 36 | - VDD applied |
| 37 | - within 1sec, activate scanning signals |
| 38 | - wait at least 50mS - scanning signals must be active before activating DISP |
| 39 | |
| 40 | Signal mapping: |
| 41 | Schematic LV8V31 signal name |
| 42 | ========================================= |
| 43 | LCD_ENAVLCD DISP |
| 44 | LCD_PWR Applies VDD to board |
| 45 | |
| 46 | Both of the above signals are controlled by the CPLD |