TWSI |
Address |
ChipLoc |
PartNum |
Description |
Useful links |
TWSI |
0x1b |
u17 |
TC654 |
Microchip fan controller. |
Datasheet |
TWSI |
0x64 |
u15 |
PCF8563 |
RTC. |
Datasheet |
TWSI |
0x48 |
u16 |
LM75BIMM-3 |
temperature sensor. |
Datasheet |
TWSI |
0x51 |
? |
? |
Most likely U2 (custom bootrom, perhaps). |
|
I don't think 0x51 is U2 (or indeed U1 or U3). These are identified below as programmable regulators, but the interface on them is not I2C. B22824@prtnx.com 17:54, 20 June 2011 (UTC)
ChipLocation |
PartNumber |
Description |
Useful Links |
U10 |
88F6281 |
SoC |
Product brief Datasheet |
U18 |
88E1116R-NNC1 |
Gigabit Ethernet |
|
U6, U7 |
74hct132d |
Quad 2-input NAND Schmitt Trigger. |
|
U8, |
74hct74d |
Dual D-type flip-flop with set and reset. |
|
U1, U3 |
88PG8227 |
Programmable Voltage Regulators |
|
U11, U12 |
K4T51163QG |
64MB DDR2 SDRAM x 2 |
|
T11 |
LAN3219 |
Transformer, NIC isolation |
|
Q4 |
78D05L |
5v regulator |
|
U14 |
K9F2G08U0B |
256MB NAND Memory |
|
U19 |
TPS2065 |
1 Amp solid state switch (controls power to the unit) |
|
ChipLocation |
PartNumber |
Description |
Q3, Q5 |
BA9S1L? |
By the identifier assumed to be a transistor array or a fet. Maybe controls power up sequence. |
U2 |
MRVL H101 9251 |
This is the one we need to know. Made by Marvell. It's a 88PH8101 voltage regulator. |
Q8 |
AJ3AF FDS 6678AZ |
Another FET. |