Enable Interrupt Request Register
| EN0 | Bit0 of ENIR |
| EN1 | Bit1 of ENIR |
| EN2 | Bit2 of ENIR |
| EN3 | Bit3 of ENIR |
| EN4 | Bit4 of ENIR |
| EN5 | Bit5 of ENIR |
| EN6 | Bit6 of ENIR |
| EN7 | Bit7 of ENIR |
| EN8 | Bit8 of ENIR |
| EN10 | Bit10 of ENIR |
| EN11 | Bit11 of ENIR |
| EN12 | Bit12 of ENIR |
| EN13 | Bit13 of ENIR |
| EN14 | Bit14 of ENIR |
| EN15 | Bit15 of ENIR |
| EN16 | Bit16 of ENIR |
| EN17 | Bit17 of ENIR |
| EN18 | Bit18 of ENIR |
| EN19 | Bit19 of ENIR |
| EN20 | Bit20 of ENIR |
| EN21 | Bit21 of ENIR |
| EN22 | Bit22 of ENIR |
| EN23 | Bit23 of ENIR |