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M321 - Stepper Motor Controller M-module with on-board Power Amplifiers User Manual 4. Version: 1.3 FUNCTIONAL DESCRIPTION This chapter gives a detailed description of the M321. The M-module interface is described as well as the power stages and the home sensor inputs. 4.1. BLOCK DIAGRAM Figure 8 M321 block diagram 4.2. M-MODULE INTERFACE 4.2.1. MEMORY MAP The following table shows the address map of the M321 module. All addresses are relative to the base address of the module. Offset Width 0x00 Description Dual ported memory window 0x80 16 bit Page register 0x82 16 bit Control register 0xfe 16 bit EEPROM register AcQuisition Technology bv P.O. Box 627, 5340 AP Oss, The Netherlands Page 11 of 58