Intel AXXRPCM3 User Manual
Intel® RAID Portable Cache Module AXXRPCM3 Technical Product Specification
Hardware
Revision
1.1
Intel order number E20184-002
8
Pin
Type
Function
SCL
-
SPD Clock Lines: This signal is used to clock data into and out of the SPD EEPROM. A
resistor may be connected from the SCL bus time to VDDSPD on the system planar to
act as a pull up.
resistor may be connected from the SCL bus time to VDDSPD on the system planar to
act as a pull up.
SDA
-
SPD Data: This bidirectional pin is used to transfer data into or out of the SPD EEPROM.
A resistor must be connected from the SDA bus line to VDDSPD on the system planar to
act as a pull-up.
A resistor must be connected from the SDA bus line to VDDSPD on the system planar to
act as a pull-up.
SA0 –
SA2
SA2
SUPPLY
SPD Address Lines: These signals are tied at the system planar to either VSS or VDD
SPD to configure the serial SPD EEPROM address range.
SPD to configure the serial SPD EEPROM address range.
RESET
1
The
RESET
1
Pin is connected to the RST
1
pin on the register and to the OE pin on the
PLL. When low, all register outputs will be driven low and the PLL clocks to the DRAMs
and register(s) will be set to low level (the PLL will remain synchronized with the input
clock)
and register(s) will be set to low level (the PLL will remain synchronized with the input
clock)
NC
SUPPLY
No Connection: A line is unconnected in the DIMM.
Note:
1
= Active Low
2.4 Connecting Cable
A 5-pin connector cable is pre-installed in the battery pack.
Table 4. Interface Connector Pin-out
Pin
Signal Name
Description
Color
1
SMBD
SMBus data
Green
2 SMBC
SMBus
clock
Blue
3
GND
Battery negative terminal
Black
4
PACK-
Battery pack negative terminal
White
5
PACK+
Battery pack positive terminal
Red
2.5 Battery Pack
The cache-memory hold time depends on the size and configuration of the RAID controller
memory. Battery backup retention time is estimated at 72 hours (three days) but the retention
time varies depending on memory capacity and the number of memory components used on the
DIMM to support that capacity.
memory. Battery backup retention time is estimated at 72 hours (three days) but the retention
time varies depending on memory capacity and the number of memory components used on the
DIMM to support that capacity.
2.5.1
Smart Battery Circuit
The Intel
®
RAID Portable Cache Module AXXRPCM3 is based on the Texas Instruments
bq2060A SBS v1.1-compliant Gas Gauge IC*. The key features of the SBS v1.1 IC are:
Provides accurate measurement of available charge
Supports SBS Smart Battery Data Specification v1.1
Reports voltages
Provides voltage, temperature, and current measurements