US 11,657,005 B2
Serial data communication between a master device and peripheral devices
Wojciech Typrowicz, Dublin (IE); and Markus Heinrich, Dublin (IE)
Assigned to Aptiv Technologies Limited, St. Michael (BB)
Filed by Aptiv Technologies Limited, St. Michael (BB)
Filed on Feb. 4, 2022, as Appl. No. 17/650,012.
Claims priority of application No. 2101658 (GB), filed on Feb. 5, 2021.
Prior Publication US 2022/0253391 A1, Aug. 11, 2022
Int. Cl. G06F 13/10 (2006.01); G06F 13/42 (2006.01); G06F 13/40 (2006.01); H04L 5/14 (2006.01)
CPC G06F 13/10 (2013.01) [G06F 13/4282 (2013.01); G06F 2213/0002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of serial data communication between a master device and a plurality of slave drive units for driving peripheral devices, wherein the slave drive units include a serial shift register, the method comprising:
providing an individual speed unit corresponding to an individual slave drive unit, wherein the individual speed unit includes a serial shift register;
providing a duplex data communication connection between a serial register of individual speed units and a serial register of individual corresponding slave drive units;
providing a serial data connection between the serial registers of the speed units so that they are connected in a series chain with a data input at one end of the chain and a data output at the other end of the chain;
enabling, in a first cycle, the serial data connection between the serial registers of the speed units whereby data can be serially communicated, at a first relatively faster pulse rate, from the master device into the data input of the series chain and to the master device from the data output of the series chain; and
enabling, in a second cycle, the duplex data communication connection between the serial register of individual speed units and the corresponding slave drive units whereby data can be serially communicated in parallel therebetween at a second relatively slower pulse rate.