Technical Product Specification
6-HDD Expander SAS Hot Swap Backplane Intel® Server System SC5650HCBRP TPS
Revision 1.2
Intel order number E81443-002
96
Table 58. 6HDD I
2
C Bus Loading
Device Power
Well
VIH VIL VOL Ileak CAP
I2C
Address
I2C Bus Name
TMP75*
P3V3 0.7 VCC 0.3 VCC 0.4 V/3 mA 1 uA 3 PF
90h SAS_I2C0_DAT,
SAS_I2C0_CLK
VSC7161*
P3V3 2.0 V 0.8 V 0.4 V/4 mA 10 uA
N/A N/A SAS_I2C0_DAT,
SAS_I2C0_CLK
AT24C64* P3V3 0.7 VCC 0.3 VCC 0.4 V/2.1 mA
3 uA 8 PF
A0h SAS_I2C0_DAT,
SAS_I2C0_CLK
VSC7161* P3V3 2.0 V 0.8 V 0.4 V/4 mA 10 uA
N/A C0h or
C2h
SAS_I2C1_DAT,
SAS_I2C1_CLK
MMBF170(S)* P3V3 N/A N/A N/A N/A N/A N/A SAS_I2C1_DAT,
SAS_I2C1_CLK
MMBF170(D)* P5V N/A N/A N/A N/A N/A N/A SMB_IPMB_5V_CLK,
SMB_IPMB_5V_DAT
J4D2 P5V 0.7 VCC 0.3 VCC
0.4 V/3 mA 10 uA
4/8 P
N/A SMB_IPMB_5V_CLK,
SMB_IPMB_5V_DAT
5.1.1.5 Temperature Sensor
The 4HDD and 6HDD active SAS/SATA HSBP provides a TI TMP75* or equivalent temperature
sensor. The host can query the TMP75* at any time to read the temperature.
The temperature sensor has an I
2
C address of 0x90h on Port 0 of the VSC7161* SAS Expander.
5.1.1.6 Serial EEPROM
The 6-HDD Expander SAS HSBP provides an Atmel AT24C64* or equivalent serial EEPROM
for storing the FRU information. The AT24C64* EEPROM provides 64 K bits of serial electrically
erasable and programmable read-only memory.
The serial EEPROM has an I
2
C address of 0xA0h and resides on Port 0 of the VSC7161* SAS
Expander.
5.1.2 General Purpose Input/Output (GPIO)
The Vitesse VSC7161* SAS Expander supports GPIO pins that are customizable. The following
table lists the GPIO pins with their assigned functions.
Table 59. VSC7161* SAS Expander GPIO Assignment
VSC7161*
PIN Name
I/O Type
Power
Well
Programming
Description
System Function Connection
P0_0 O 3.3 V HDD0 Fault LED control LED_DRV0_FLT_N Pull up 4.7 K to 3.3 V
P0_1 O 3.3 V HDD1 Fault LED control LED_DRV1_FLT_N Pull up 4.7 K to 3.3 V
P0_2 O 3.3 V HDD2 Fault LED control LED_DRV2_FLT_N Pull up 4.7 K to 3.3 V
P0_3 O 3.3 V HDD3 Fault LED control LED_DRV3_FLT_N Pull up 4.7 K to 3.3 V
P0_4 O 3.3 V HDD4 Fault LED control LED_DRV4_FLT_N Pull up 4.7 K to 3.3 V
P0_5 O 3.3 V HDD5 Fault LED control LED_DRV5_FLT_N Pull up 4.7 K to 3.3 V