33.8.3 NCOxACC

NCO Accumulator Register

Note:

The individual bytes in this multibyte register can be accessed with the following register names:
- NCOxACCU: Accesses the upper byte ACC[23:16]
- NCOxACCH: Accesses the high byte ACC[15:8]
- NCOxACCL: Accesses the low byte ACC[7:0].
The accumulator spans registers NCOxACCU:NCOxACCH:NCOxACCL. The 24 bits are reserved, but not all are used. This register updates in real-time, asynchronously to the CPU; there is no provision to ensure atomic access to this 24-bit space using an 8-bit bus. Writing to this register while the module is operating will produce undefined results.

Name:	NCOxACC
Address:	0x440,0x448,0x450


Bit	23	22	21	20	19	18	17	16
					ACC[19:16]
Access					R/W	R/W	R/W	R/W
Reset					0	0	0	0


Bit	15	14	13	12	11	10	9	8
	ACC[15:8]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
	ACC[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bits 19:0 – ACC[19:0] Accumulated sum of NCO additions

The individual bytes in this multibyte register can be accessed with the following register names: NCOxACCU: Accesses the upper byte ACC[23:16] NCOxACCH: Accesses the high byte ACC[15:8] NCOxACCL: Accesses the low byte ACC[7:0]. The accumulator spans registers NCOxACCU:NCOxACCH:NCOxACCL. The 24 bits are reserved, but not all are used. This register updates in real-time, asynchronously to the CPU; there is no provision to ensure atomic access to this 24-bit space using an 8-bit bus. Writing to this register while the module is operating will produce undefined results.