Fast Ethernet Controller (FEC)
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Freescale Semiconductor
45-11
45.3.1
Communications Processor Timing Register (CPTR)
The CPTR
contains the six mode bits for the RMII interface
Table 45-6
describes CPTR[23:28] RMII-related bits. The SEC Lite–related CPTR[16:22] bits are
described in
Section 52.1, “Communications Processor Timing Register (CPTR).”
0
15
Field
—
Reset
0000_0000
R/W
R/W
Addr
0x0ADC
16
18
19
20
22
23
24
25
26
27
28
29
30
31
Field
SEC_INT
SEC_BO
SEC_AT1-AT3 FEC1 FEC2 1TCI
2TCI
RE1
RE2
—
Reset
0000_0000
R/W
R/W
Addr
0x0ADE
Figure 45-4. CPTR Register
Table 45-6. CPTR RMII Related Field Descriptions
Bits
Name
Description
0–15
—
Reserved, should be cleared.
16-22
SEC Bits
Described in
Section 52.1, “Communications Processor Timing Register (CPTR).”
23
FEC1 = RMII_FEC1
RMII/MII1 interface mode
0 FEC1 MII interface (and RMII logic reset)
1 FEC1 RMII interface.
24
FEC2 = RMII_FEC2
RMII/MII2 interface mode
0 FEC2 MII interface (and RMII logic reset)
1 FEC2 RMII interface.
25
1TCI = RMII1_TCI
RMII1 Transmit Clock Invert
0 normal mode
1 FEC1 RMII internal transmit clock is inverted before it is used
26
2TCI = RMII2_TCI
RMII2 Transmit Clock Invert
0 normal mode
1 FEC2 RMII internal transmit clock is inverted before it is used
27
RE1 =
RMII_RATE_FEC1
RMII1 rate (for 50 Mhz input clock from external oscillator)
0 FEC1 works in 100M mode fast Ethernet)
1 FEC1 works in 10M mode
28
RE2 =
RMII_RATE_FEC2
RMII2 rate (for 50 Mhz input clock from external oscillator)
0 FEC2 works in 100M mode (fast Ethernet)
1 FEC2 works in 10M mode
29–31
—
Reserved, should be cleared.
Summary of Contents for PowerQUICC MPC870
Page 98: ...MPC885 PowerQUICC Family Reference Manual Rev 2 I 4 Freescale Semiconductor ...
Page 118: ...MPC885 Overview MPC885 PowerQUICC Family Reference Manual Rev 2 1 20 Freescale Semiconductor ...
Page 158: ...The MPC8xx Core MPC885 PowerQUICC Family Reference Manual Rev 2 3 18 Freescale Semiconductor ...
Page 288: ...MPC885 PowerQUICC Family Reference Manual Rev 2 III 4 Freescale Semiconductor ...
Page 554: ...MPC885 PowerQUICC Family Reference Manual Rev 2 V 6 Freescale Semiconductor ...
Page 1090: ...UTOPIA Interface MPC885 PowerQUICC Family Reference Manual Rev 2 43 8 Freescale Semiconductor ...
Page 1312: ...Byte Ordering MPC885 PowerQUICC Family Reference Manual Rev 2 A 8 Freescale Semiconductor ...
Page 1336: ...MPC885 PowerQUICC Family Reference Manual Rev 2 D 16 Freescale Semiconductor ...
Page 1358: ...MPC885 PowerQUICC Family Reference Manual Rev 2 D 38 Freescale Semiconductor ...
Page 1370: ...MPC880 MPC885 PowerQUICC Family Reference Manual Rev 2 E 4 Freescale Semiconductor ...
Page 1386: ...Revision History MPC885 PowerQUICC Family Reference Manual Rev 2 I 2 Freescale Semiconductor ...