1. A system-on-chip (SoC), comprising:
at least one master and a plurality of slaves;
an interconnect configured to connect the at least one master and each of the plurality of slaves;
a measurement block configured to connect each of the plurality of slaves and the interconnect using a plurality of channels and to measure a load of each of the plurality of slaves; and
a central controller configured to measure a load imbalance among the plurality of channels using the measured load information.
2. The SoC according to claim 1, wherein the central controller multiplies a weight by each of a bandwidth, a latency, and an outstanding count with regard to each of the plurality of slaves, adds the multiplied results, and measures a load with regard to each of the plurality of slaves.
3. The SoC according to claim 2, wherein the weight includes an importance with regard to each of the bandwidth, the latency, and the outstanding count.
4. The SoC according to claim 2, wherein the central controller calculates one of a minimum load value, a maximum load value, and a load variance with regard to a load of each of the plurality of slaves.
5. The SoC according to claim, 4 wherein the central controller determines a load imbalance among the plurality of channels based on one of the minimum load value, the maximum load value, and the load variance.
6. The SoC according to claim 4, wherein the at least one master includes an application processor, and
the application processor operates a dynamic voltage & frequency scaling (DVFS) based on one of the minimum load value, the maximum load value, and the load variance.
7. The SoC according to claim 1, wherein the load of each of the plurality of slaves is measured using a bandwidth, a latency, and an outstanding count with regard to each of the plurality of slaves.
8. The SoC according to claim 1, wherein the interconnect is redesigned based on the load imbalance information.
9. The SoC according to claim 1, wherein each of the plurality of slaves includes a memory instance.
10. The SoC according to claim 1, wherein the at least one master transfers a request to one of the plurality of slaves, and
a slave that receives the request transfers a response corresponding to the request to the at least one master.
11. A load imbalance detecting method of a system-on-chip (SoC) including at least one master, a plurality of slaves, and an interconnect that connects the at least one master and the plurality of slaves with each other, the method comprising:
measuring a load with regard to each of the plurality of slaves using a plurality of channels; and
measuring a load imbalance among the plurality of channels using the measured load information.
12. The load imbalance detecting method according to claim 11, wherein the measuring of the load with regard to each of the plurality of slaves using the plurality of channels further comprising:
multiplying a weight by each of a bandwidth, a latency, and an outstanding count with regard to each of the plurality of slaves;
adding the multiplied results with each other; and
measuring the load with regard to each of the plurality of slaves based on the added results.
13. The load imbalance detecting method according to claim 12, wherein the weight comprises an importance of each of the bandwidth, the latency, and the outstanding count.
14. The load imbalance detecting method according to claim 12, wherein the measuring of the load with regard to each of the plurality of slaves based on the added results comprises calculating a minimum load value, a maximum load value, and a load variance with regard to the load of each of the plurality of slaves.
15. The load imbalance detecting method according to claim 14, wherein the at least one master comprises an application processor, and
the method further comprises performing a dynamic voltage & frequency scaling (DVFS) method based on the minimum load value, the maximum load value, and the load variance with regard to the load of each of the plurality of slaves by the application processor.
16. A mobile device comprising:
a plurality of slaves;
a plurality of masters configured to generate requests with target addresses to access the plurality of slaves;
a plurality of channel efficiency enhancers configured to convert the target addresses received from the plurality of masters;
an interconnect configured to connect the at least one master and each of the plurality of slaves based on the converted target addresses;
a plurality of measurement components configured to measure loads of the plurality of slaves; and
a central controller configured to measure a load imbalance information among the plurality of channels using the measured load information.
17. The mobile device according to claim 16, wherein the central controller transmits the load imbalance information to at least one of the plurality of masters, the plurality of channel efficiency enhancers, and the interconnect.
18. The mobile device according to claim 17, wherein one of the plurality of channel efficiency enhancers updates an address conversion table to match the target addresses to the converted target addresses based on the load imbalance information.
19. The mobile device according to claim 16, wherein the load imbalance information comprises a latency value, a bandwidth value, and an outstanding count value.
20. The mobile device according to claim 19, wherein the load imbalance information further comprises weight values each of which corresponds to the latency value, the bandwidth value, and the outstanding count value.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-7. (canceled)
8. A multi-stage transmission of a planetary design comprising:
a drive shaft (1),
an output shaft (2),
first, second, third and fourth planetary gear sets (P1, P2, P3, P4) disposed within a housing (G),
third, fourth, fifth, sixth, seventh and eighth rotatable shafts (3, 4, 5, 6, 7, 8),
six shift elements (03, 04, 05, 14, 17, 18), comprising brakes (03, 04, 05) and clutches (14, 17, 18), whose selective engagement producing different transmission ratios between the drive shaft (1) and the output shaft (2) so that nine forward gears and one reverse gear are implementable,
wherein the sun gear of the first planetary gear set (P1) is connected to the fifth shaft (5), the fifth shaft (5) can be coupled, via a third brake (05), to the housing (G), the fifth shaft (5) can be detachably connected, via a first clutch (15), to the drive shaft (1),
the drive shaft (1) can be detachably connected, via a second clutch (17), to the seventh shaft (7), the seventh shaft which is connected to both the ring gear of the third planetary gear set (P3) and the carrier of the second planetary gear set (P2),
the drive shaft (1) can be detachably connected, via a third clutch (18), to the eighth shaft (8), the eighth shaft (8) is connected to both the carrier of the first planetary gear set (P1) and the sun gear of the second planetary gear set (P2),
the sixth shaft (6) is connected to both the ring gear of the second planetary gear set (P2) and the carrier of the fourth planetary gear set (P4),
the fourth shaft (4) is connected to both the ring gear of the first planetary gear set (P1) and the sun gear of the fourth planetary gear set (P4), and the fourth shaft (4) can be coupled, via a second brake (04), to the housing (G),
the third shaft (3) is connected to the sun gear of the third planetary gear set (P3) and can be coupled, via a first brake (03), to the housing (G), and
the output shaft (2) is connected to both the carrier of the third planetary gear set (P3) and the ring gear of the fourth planetary gear set (P4).
9. The multi-stage transmission according to claim 8, wherein the first planetary gear set (P1) is designed as a plus planetary gear set, and the second, third and fourth planetary gear sets (P2, P3, P4) are designed as minus planetary gear sets.
10. The multi-stage transmission according to claim 8, wherein, when viewed axially, the first, the second, the third and the fourth planetary gear sets (P1, P2, P3, P4) are disposed in the sequence of the first planetary gear set (P1), the second planetary gear set (P2), the third planetary gear set (P3), the fourth planetary gear set (P4).
11. The multi-stage transmission according to claim 8, wherein the six shift elements (03, 04, 05, 15, 17, 18) of the transmission are designed as shift elements that can be actuated upon demand.
12. The multi-stage transmission according to claim 8, wherein the first brake (03) is designed as a form-locking shift elements.
13. The multi-stage transmission according to claim 8, wherein a first forward gear is attained by engaging the first and the second brakes (03, 04) and the third clutch (18),
a second forward gear is attained by engaging the first and the third brakes (03, 05) and the third clutch (18),
a third forward gear is attained by engaging the first brake (03) and the first and the third clutches (15, 18),
a fourth forward gear is attained by engaging the first brake (03) and the first and the second clutches (15, 17),
a fifth forward gear is attained by engaging the first, the second and the third clutches (15, 17, 18),
a sixth forward gear is attained by engaging the third brake (05) and the second and the third clutches (17, 18),
a seventh forward gear is attained by engaging the second brake (04) and the second and the third clutches (17, 18),
an eighth forward gear is attained by engaging the second and the third brakes (04, 05) and the second clutch (17),
a ninth forward gear is attained by engaging the second brake (04) and the first and the second clutches (15, 17), and
the reverse gear is attained by engaging the first and the second brakes (03, 04) and the first clutch (15).
14. The multi-stage transmission according to claim 8, wherein a first forward gear is attained by engaging the first and the second brakes (03, 04) and the third clutch (18),
a second forward gear is attained by engaging the first and the third brakes (03, 05) and the third clutch (18),
a third forward gear is attained by engaging the first brake (03) and the first and the third clutches (15, 18),
a fourth forward gear is attained by engaging the first and the second brake (03, 04) and the second clutch (17),
a fifth forward gear is attained by engaging the first, the second and the third clutches (15, 17, 18),
a sixth forward gear is attained by engaging the third brake (05) and the second and the third clutches (17, 18),
a seventh forward gear is attained by engaging the second brake (04) and the second and the third clutches (17, 18),
an eighth forward gear is attained by engaging the second and the third brakes (04, 05) and the second clutch (17),
a ninth forward gear is attained by engaging the second brake (04) and the first and the second clutches (15, 17), and
the reverse gear is attained by engaging the first and the second brakes (03, 04) and the first clutch (15).
15. The multi-stage transmission according to claim 8, wherein a first forward gear is attained by engaging the first and the second brakes (03, 04) and the third clutch (18),
a second forward gear is attained by engaging the first and the third brakes (03, 05) and the third clutch (18),
a third forward gear is attained by engaging the first brake (03) and the first and the third clutches (15, 18),
a fourth forward gear is attained by engaging the first brake (03) and the second and the third clutches (17, 18),
a fifth forward gear is attained by engaging the first, the second and the third clutches (15, 17, 18),
a sixth forward gear is attained by engaging the third brake (05) and the second and the third clutches (17, 18),
a seventh forward gear is attained by engaging the second brake (04) and the second and the third clutches (17, 18),
an eighth forward gear is attained by engaging the second and the third brakes (04, 05) and the second clutch (17),
a ninth forward gear is attained by engaging the second brake (04) and the first and the second clutches (15, 17), and
the reverse gear is attained by engaging the first and the second brakes (03, 04) and the first clutch (15).
16. The multi-stage transmission according to claim 8, wherein a first forward gear is attained by engaging the first and the second brakes (03, 04) and the third clutch (18),
a second forward gear is attained by engaging the first and the third brakes (03, 05) and the third clutch (18),
a third forward gear is attained by engaging the first brake (03) and the first and the third clutches (15, 18),
a fourth forward gear is attained by engaging the first and the third brakes (03, 05) and the second clutch (17),
a fifth forward gear is attained by engaging the first, the second and the third clutches (15, 17, 18),
a sixth forward gear is attained by engaging the third brake (05) and the second and the third clutches (17, 18),
a seventh forward gear is attained by engaging the second brake (04) and the second and the third clutches (17, 18),
an eighth forward gear is attained by engaging the second and the third brakes (04, 05) and the second clutch (17),
a ninth forward gear is attained by engaging the second brake (04) and the first and the second clutches (15, 17), and
the reverse gear is attained by engaging the first and the second brakes (03, 04) and the first clutch (15).
17. The multi-stage transmission according to claim 8, wherein the multi-stage transmission is an automatic transmission for a motor vehicle.
18. A multi-stage transmission of a planetary design comprising:
a drive shaft,
an output shaft,
first, second, third and fourth planetary gear sets disposed within a housing,
third, fourth, fifth, sixth, seventh and eighth rotatable shafts,
six shift elements, comprising brakes and clutches, whose selective engagement producing different transmission ratios between the drive shaft and the output shaft so that nine forward gears and one reverse gear are implementable,
wherein the sun gear of the first planetary gear set is connected to the fifth shaft, the fifth shaft can be coupled, via a third brake, to the housing, the fifth shaft can be detachably connected, via a first clutch, to the drive shaft,
the drive shaft can be detachably connected, via a second clutch, to the seventh shaft, the seventh shaft which is connected to both the ring gear of the third planetary gear set and the carrier of the second planetary gear set,
the drive shaft can be detachably connected, via a third clutch, to the eighth shaft, the eighth shaft is connected to both the carrier of the first planetary gear set and the sun gear of the second planetary gear set,
the sixth shaft is connected to both the ring gear of the second planetary gear set and the carrier of the fourth planetary gear set,
the fourth shaft is connected to both the ring gear of the first planetary gear set (P1) and the sun gear of the fourth planetary gear set, and the fourth shaft can be coupled, via a second brake, to the housing,
the third shaft is connected to the sun gear of the third planetary gear set and can be coupled, via a first brake, to the housing, and
the output shaft is directly connected to both the carrier of the third planetary gear set and the ring gear of the fourth planetary gear set.
19. The multi-stage transmission according to claim 18, wherein a first forward gear is attained by engaging the first and the second brakes and the third clutch,
a second forward gear is attained by engaging the first and the third brakes and the third clutch,
a third forward gear is attained by engaging the first brake and the first and the third clutches,
a fourth forward gear is attained by engaging the first brake and the first and the second clutches,
a fifth forward gear is attained by engaging the first, the second and the third clutches,
a sixth forward gear is attained by engaging the third brake and the second and the third clutches,
a seventh forward gear is attained by engaging the second brake and the second and the third clutches,
an eighth forward gear is attained by engaging the second and the third brakes and the second clutch,
a ninth forward gear is attained by engaging the second brake and the first and the second clutches, and
the reverse gear is attained by engaging the first and the second brakes and the first clutch.
20. The multi-stage transmission according to claim 18, wherein a first forward gear is attained by engaging the first and the second brakes and the third clutch,
a second forward gear is attained by engaging the first and the third brakes and the third clutch,
a third forward gear is attained by engaging the first brake and the first and the third clutches,
a fourth forward gear is attained by engaging the first and the second brake and the second clutch,
a fifth forward gear is attained by engaging the first, the second and the third clutches,
a sixth forward gear is attained by engaging the third brake and the second and the third clutches,
a seventh forward gear is attained by engaging the second brake and the second and the third clutches,
an eighth forward gear is attained by engaging the second and the third brakes and the second clutch,
a ninth forward gear is attained by engaging the second brake and the first and the second clutches, and
the reverse gear is attained by engaging the first and the second brakes and the first clutch.
21. The multi-stage transmission according to claim 18, wherein a first forward gear is attained by engaging the first and the second brakes and the third clutch,
a second forward gear is attained by engaging the first and the third brakes and the third clutch,
a third forward gear is attained by engaging the first brake and the first and the third clutches,
a fourth forward gear is attained by engaging the first brake (03) and the second and the third clutches,
a fifth forward gear is attained by engaging the first, the second and the third clutches,
a sixth forward gear is attained by engaging the third brake and the second and the third clutches,
a seventh forward gear is attained by engaging the second brake and the second and the third clutches,
an eighth forward gear is attained by engaging the second and the third brakes and the second clutch,
a ninth forward gear is attained by engaging the second brake and the first and the second clutches, and
the reverse gear is attained by engaging the first and the second brakes and the first clutch.
22. The multi-stage transmission according to claim 18, wherein a first forward gear is attained by engaging the first and the second brakes and the third clutch,
a second forward gear is attained by engaging the first and the third brakes and the third clutch,
a third forward gear is attained by engaging the first brake and the first and the third clutches,
a fourth forward gear is attained by engaging the first and the third brakes and the second clutch,
a fifth forward gear is attained by engaging the first, the second and the third clutches,
a sixth forward gear is attained by engaging the third brake and the second and the third clutches,
a seventh forward gear is attained by engaging the second brake and the second and the third clutches,
an eighth forward gear is attained by engaging the second and the third brakes and the second clutch,
a ninth forward gear is attained by engaging the second brake and the first and the second clutches, and
the reverse gear is attained by engaging the first and the second brakes and the first clutch.
23. The multi-stage transmission according to claim 18, wherein the multi-stage transmission is an automatic transmission for a motor vehicle.