Baryon
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Baryon is the codename for the PSP Syscon (System Controller) chip. Communication with this chip is done through SPI.
Versions
Version | Notes |
---|---|
0x00020601 | First known version. Found on TMU-001 motherboard. |
0x00030600 | |
0x00040600 | |
0x00114000 | |
0x00121000 | |
0x0022B200 | |
0x00234000 | Removed ability to write to battery EEPROM. |
0x00243000 | |
0x00263100 | |
0x00285000 | |
?0x002A0000? | From hypothetical TA-094 motherboard. |
0x002C4000 | |
0x002E4000 | |
0x00304000 | |
0x00403000 |
Hardware
Hardware versions
- Note: You can usually deduce the serial number of the system controller chip on the motherboard when knowing Baryon version. For example, 0x00030600 has the BAR14 labelled chip, while 0x00040600 has the BAR15 labelled chip.
Talking to Baryon
TA-086: - Power from programmer (3.3V) - X1 OSC 4Mhz - Cut FLMD0 grounding ========== (Connect) ========== ------ Start(Signature Read) ------ Device name: UPD78F0531 Device data: 10 7F 04 7C Device end addr: 00003FFF Security Flag: 00FF (Vulnerable) Boot Block Number: 003 Firmware Version: 2.00 Signature Read PASS ------ End(Signature Read) ------ ========== (Disconnect) ========== TA-085: - Power from programmer (3.3V) - X1 OSC 4Mhz ========== (Connect) ========== ------ Start(Signature Read) ------ Device name: UPD78F0544 Device data: 10 7F 04 7C Device end addr: 0000BFFF Security Flag: 00F9 Boot Block Number: 003 Firmware Version: 2.00 Signature Read PASS ------ End(Signature Read) ------ ========== (Disconnect) ========== TA-090/TA-093: - Power from programmer (3.3V) - EXCLK (OCD0B) 4Mhz from Programmer ========== (Connect) ========== ------ Start(Signature Read) ------ Device name: UPD78F0534 Device data: 10 7F 04 7C Device end addr: 0000BFFF Security Flag: 00E8 Boot Block Number: 003 Firmware Version: 2.00 Signature Read PASS ------ End(Signature Read) ------ ========== (Disconnect) ========== TA-091: - Power from programmer (3.3V) - EXCLK (OCD0B) 4Mhz from Programmer - Remove RxD/TxD resistors ========== (Connect) ========== ------ Start(Signature Read) ------ Device name: UPD78F0544 Device data: 10 7F 04 7C Device end addr: 0000BFFF Security Flag: 00F9 Boot Block Number: 003 Firmware Version: 2.00 Signature Read PASS ------ End(Signature Read) ------ ========== (Disconnect) ==========
Hardware Signature (3AXX)
02 13 10 7f 04 7c 7f 7f 02 c4 37 38 46 b0 b5 b3 34 20 20 79 03 5d 03
Meaning
10 Vendor (Renessas) 7F Extension code (fixed in 78K0/Kx2) 04 Function information (fixed in 78K0/Kx2) 7C Device Extension code (fixed in 78K0/Kx2) 7F 7F 02 Internal flash memory last address (extracted from the lower bytes) (0xBFFF) (48KB) (Note 2) C4 37 38 46 B0 B5 B3 34 20 20 Device name (D78F0534 ) 79 Security flag information (odd parity bit so 0xF9) (Note 3) 03 Boot block number (fixed)
Notes
Note 2. The parity calculation for the END field is performed as follows (when the last address is 005FFFH) <1> The END field is divided in 7-bit units from the lower digit (the higher 3 bits are discarded). 0 0 5 F F F 00000000 01011111 11111111 ↓ 000 0000001 0111111 1111111 <2> The odd parity bit is appended to the highest bit. p0000001 p01111111 p1111111 (p = odd parity bit) = 0000001 10111111 01111111 = 01 BF 7F <3> The order of the higher, middle, and lower bytes is reversed, as follows. 7F BF 01 CHAPTER 5 DESCRIPTION OF COMMAND PROCESSING Application Note U17739EJ2V0AN 50 The following shows the procedure to translate the values in the END field that has been sent from the microcontroller to the actual address. <1> The order of the higher, middle, and lower bytes is reversed, as follows. 7F BF 01 ↓ 01 BF 7F <2> Checks that the number of “1” is odd in each byte (this can be performed at another timing). <3> The parity bit is removed and a 3-bit 0 is added to the highest bit. 01 BF 7F ↓ 00000001 10111111 01111111 ↓ 0000001 0111111 1111111 ↓ 000 0000001 0111111 1111111 <4> The values are translated into groups in 8-bit units. 00000000101111111111111 ↓ 00000000 01011111 11111111 ↓ = 0 0 5 F F F If “7F BF 01” is given to the END field, the actual last address is consequently 005FFFH.
Note 3. When security flag information is set using the Security Set command, the highest bit is fixed to “1”. If the security flag information is read using the Silicon Signature command, however, the highest bit is the odd parity.
Hardware Revision (3AXX)
D78F0534
- custom BGA 78K0/KE2
- 48 KB FLASH
- 1KB RAM
- 4 MHz
- Multiplier x1
- UART-X1-OSC
- If 64 Pin, REGC Connected to VDD (for some odd reason)
Pictures
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