Preliminary User's Manual l MBLS1012AL UM 0001 l © 2019, TQ-Systems GmbH
Page 17
4.2.9
RTC backup supply
In case of power failure a lithium battery on the MBLS1012AL supplies the RTC on the TQMLS1012AL.
Illustration 15:
Position of backup battery X7
For the RTC on the MBLS1012AL the following applies:
Table 19:
Electrical characteristics backup battery
Parameter
Value
Coin Cell voltage
2.1 V to 3.7 V, typical 3.0 V
Coin Cell type
CR2032
Current consumption RTC
< 1 µA
4.2.10
SATA
For mass storage, a connection for an SSD in M.2 form factor is provided. The processor provides a SATA 3.0 AHCI interface via
the SerDes interface. Transfer rates of 1.5 Gb/s (Gen I), 3 Gb/s (Gen II) and 6Gb/s (Gen III) are possible. The M.2 standard defines
different codings for the connector; an M.2 slot with B coding is used on the motherboard. M.2 modules are available in different
form factors. The MBLS1012AL supports the common form factors 2242, 2260 and 2280 for SSDs. The mounting for the 2280
form factor is installed as standard. The SATA interface (SerDes-Lane D) of the LS1012A and a 3.3 V power supply are connected.
As required by the M.2 specification, the power budget of the MBLS1012AL is 2.5 A for a SATA SSD. The Device Activity Signal
(DAS/DSS#; Pin10 on X10) and the Device Sleep Signal (SATA_DEVSLP#; Pin 38 on X10) from the M.2 specification are
implemented. SATA_DEVSLP# is connected to pin 27 on pin header X22 and must be wired accordingly if functionality is
required. DAS/DSS# is directly connected to LED V17.
Table 20:
SATA transfer rates
Value
Min.
Typ.
Max.
Unit
Net transmission rate, SATA Rev 1
–
TBD
1.2
Gbit/s
Net transmission rate, SATA Rev 2
–
TBD
2.4
Gbit/s
Net transmission rate, SATA Rev 3
–
TBD
4.8
Gbit/s
Illustration 16:
Position of SATA (M.2) connector X10
