Thermal

CELL BE internal Powermanagement

CELL BE heatdistribution (on die)

Characteristics

• Dynamic Power Managment with 5 power managment states

• 1 linear sensor

• 10 digital thermal sensors (8xSPE, PPE and?)

• THERM signal(s) are sent to Syscon Hardware via SMbus

Readout of Thermal data using Software

Readable in software : LV2 sc383 sys_game_get_temperature / sc384 sys_sm_get_tzpb

Homebrew for thermal (and fan) data / control

• http://www.ps3devwiki.com/files/devtools/PS3_Temp/ mirror mirror

• control_fan_utility_v0.3.rar (including source) mirror for 4.31 and 4.40 // original thread
• control_fan_utility_v1.0.rar (including source) mirror for 3.41, 3.55, 4.21, 4.30 and 4.40 // original thread
• control_fan_utility_v1.6.rar (added support for Remote Play) mirror // original thread

• irismanager-4-x.rar (with fancontrol/thermal output) // original thread

Motherboard Thermal Management

CELL BE/RSX send thermal data over SMbus towards 2 bufferchips, which in turn sends it to Syscon which handles fanspeeds, poweroff etc.

Speculation

• Attackvector for clock-slowdown?

AD51/067ARMZ-REEL (2 channel Thermal Monitor SMbus IC)

6-710-287-01 / IC1101
Used for monitoring the CELL BE

Pin	Signal	Description
1	VCC	+3.3_Thermal
2	D+	from STI_THERMAL0 via R1106 100 Ohm and C1103 0.001uF 50V
3	D-	from STI_THERMAL0 via R1107 100 Ohm and C1103 0.001uF 50V
4	/THERM
5	GND	Ground
6	/THERM2	to /SYS_THR_ALRT
7	SDATA	from THR_I2C_SDA
8	SCLK	from THR_I2C_SCL

OnSemi ADT7461A0002RMZR (2 channel Thermal Monitor SMbus IC CELL BE/RSX)

OnSemi ADT7461A0002RMZR
6-710-287-01
Used for monitoring the CELL BE (IC1101) & RSX (IC2101)

6-710-286-01 / IC2101
Used for monitoring the RSX
Datasheet: ADT7461-D.PDF

Pin	Signal	Description
1	VCC	+3.3_Thermal
2	D+	from RSX_TDR via R2101 100 Ohm and C2103 0.001uF 50V
3	D-	from RSX_TDN via R2102 100 Ohm and C2103 0.001uF 50V
4	/THERM	to RSX_GPIO6 / RSX_THR_EVENT
5	GND	Ground
6	/THERM2	to /THRRSX_SENS_ALRT
7	SDATA	from THR_I2C_SDA
8	SCLK	from THR_I2C_SCL

Thermal Images

90nm / 60GB FAT and 65nm / 40GB FAT

source: http://psinsider.e-mpire.com/index.php?categoryid=3&m_articles_articleid=1160

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