Intel SC5400LXI Manuale Utente
Hot Swap Hard Disk Drive Bays
Intel® Server Chassis SC5400 5U Kit TPS
66
Revision:
1.0
6.2.1.2
SAS Host Interface
Port 8 and Port 9 of VSC7161* SAS Expander were only used as SAS host interface, each port
connects to SAS controller of server board or HBA via a separate 7-pin SAS connector.
connects to SAS controller of server board or HBA via a separate 7-pin SAS connector.
The following table defines pin-out of the 7-pin SAS connector:
Table 52. 7-pin SAS Connector Pin-out
Connector Contact Number
Signal Name
1 GND
2 SASn_EP_RX_P
3 SASn_EP_RX_N
4 GND
5 SASn_EP_TX_N
6 SASn_EP_TX_P
7 GND
6.2.1.3 I
2
C Serial Bus Interface
The VSC7161* SAS Expander supports two independent I
2
C interface ports with bus speed of
up to 400 Kbits. The I
2
C bus at port 0 supports a TI TMP75* or equivalent I
2
C-based
temperature sensor. This enables actual temperature value readings to be returned to the host;
this bus also supports an AT24C64* EEPROM or equivalent I
this bus also supports an AT24C64* EEPROM or equivalent I
2
C –based EEPROM used as
FRU. The Intelligent Platform Management Bus (IPMB) is supported through the I
2
C port 1.
The following figure provides a block diagram of I
2
C bus connection implemented on the 4 and 6
HDD Active SAS/SATA HSBP.
z
Addr=0xC0 or 0xC2
IPMB
Addr = 0xA0
Port 0
Port 1
EEPROM
FRU
Temp
VSC7161
146 & 147
Sensor
Addr = 0x90
148 & 149
LEVEL SHIFT
Figure 26. Active SAS/SATA HSBP I
2
C Bus Connection Diagram