MPC8540 datasheet(1184/1302 Pages) FREESCALE

1184 / 1302 page

MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

21-44

Freescale Semiconductor

10/100 Fast Ethernet Controller

user reads MACSTNADDR1, 0xCDAB7856 is returned. A read of MACSTNADDR2 returns a

value of 0x34120000. Note that the I/G and U/L bits of the frame’s DA field are located at the lsbs

of the 1st octet stored in MACSTNADDR2, where the I/G bit is bit 15, and the U/L bit is bit 14.

Table 21-35 describes the fields of the MACSTNADDR1 register.

21.5.3.6.8 Station Address Register Part 2 (MACSTNADDR2)

The MACSTNADDR2 register is written by the user. Figure 21-37 describes the

MACSTNADDR2 register. Note that the I/G and U/L bits of the frame’s DA field are located at

the lsbs of the 1st octet stored in MACSTNADDR2, where the I/G bit is bit 15, and the U/L bit is

bit 14.

15 16

23 24

Station Address, 6th Octet Station Address, 5th Octet Station Address, 4th Octet Station Address, 3rd Octet

Reset

0000_0000_0000_0000_0000_0000_0000_0000

Offset

0x2_6540

Figure 21-36. Station Address Part 1 Register Definition

Table 21-35. MACSTNADDR1 Field Descriptions

Bit

Name

Description

0–7

Station Address, 6th Octet This field holds the sixth octet of the station address. The sixth octet (station

address bits 40–47) defaults to a value of 0x00.

8–15

Station Address, 5th Octet This field holds the fifth octet of the station address. The fifth octet (station address

bits 32–39) defaults to a value of 0x00.

16–23 Station Address, 4th Octet This field holds the fourth octet of the station address. The fourth octet (station

address bits 24–31) defaults to a value of 0x00.

24–31 Station Address, 3rd Octet This field holds the third octet of the station address. The third octet (station

address bits 16–23) defaults to a value of 0x00.

15 16

Station Address, 2nd

Octet

Station Address, 1st Octet

000000

0000000000

Reset

0000_0000_0000_0000_0000_0000_0000_0000

Offset

0x2_6544

Figure 21-37. Station Address Part 2 Register Definition

MPC8540 Datasheet(PDF) 1184 Page - Freescale Semiconductor, Inc

MPC8540 Datasheet(HTML) 1184 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL