Memory Map
PXN20 Microcontroller Reference Manual, Rev. 1
A-50 Freescale Semiconductor
0x014C
INTC_PSR268_271—INTC priority select register 268–271
R/W 0x0000_0000 10.3.2.9/10-16
0x0150
INTC_PSR272_275—INTC priority select register 272–275
R/W 0x0000_0000 10.3.2.9/10-16
0x0154
INTC_PSR276_279—INTC priority select register 276–279
R/W 0x0000_0000 10.3.2.9/10-16
0x0158
INTC_PSR280_283—INTC priority select register 280–283
R/W 0x0000_0000 10.3.2.9/10-16
0x015C
INTC_PSR284_287—INTC priority select register 284–287
R/W 0x0000_0000 10.3.2.9/10-16
0x0160
INTC_PSR288_291—INTC priority select register 288–291
R/W 0x0000_0000 10.3.2.9/10-16
0x0164
INTC_PSR292_295—INTC priority select register 292–295
R/W 0x0000_0000 10.3.2.9/10-16
0x0168
INTC_PSR296_299—INTC priority select register 296–299
R/W 0x0000_0000 10.3.2.9/10-16
0x016C
INTC_PSR300_303—INTC priority select register 300–303
R/W 0x0000_0000 10.3.2.9/10-16
0x0170
INTC_PSR304_307—INTC priority select register 304–307
R/W 0x0000_0000 10.3.2.9/10-16
0x0174
INTC_PSR308_311—INTC priority select register 308–311
R/W 0x0000_0000 10.3.2.9/10-16
0x0178
INTC_PSR312_315—INTC priority select register 312–315
R/W 0x0000_0000 10.3.2.9/10-16
0x017A–0x3FFF Reserved
0xFFF4_C000
FEC
Chapter 25, Fast Ethernet Controller (FEC)
0x0000–0x0003 Reserved
0x0004 EIR—Interrupt event register R/W 0x0000_0000 25.3.4.2/25-10
0x0008 EIMR—Interrupt mask register R/W 0x0000_0000 25.3.4.3/25-12
0x000C–0x000F Reserved
0x0010 RDAR—Receive descriptor active register R/W 0x0000_0000 25.3.4.4/25-12
0x0014 TDAR—Transmit descriptor active register R/W 0x0000_0000 25.3.4.5/25-13
0x0018–0x0023 Reserved
0x0024 ECR—Ethernet control register R/W 0xF000_0000 25.3.4.6/25-14
0x0028–0x003F Reserved
0x0040 MMFR—MII management frame register R/W —
3
25.3.4.7/25-15
0x0044 MSCR—MII speed control register R/W 0x0000_0000 25.3.4.8/25-16
0x0048–0x0063 Reserved
0x0064 MIBC—MIB control/status register R/W 0xC000_0000 25.3.4.9/25-18
0x0068–0x0083 Reserved
0x0084 RCR—Receive control register R/W 0x05EE_0001 25.3.4.10/25-18
0x0088–0x00C3 Reserved
0x00C4 TCR—Transmit control register R/W 0x0000_0000 25.3.4.11/25-20
Table A-4. PXN20 Detailed Register Map (continued)
Address Offset
from Module Base
Register
Access
1
Reset Value
2
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