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Nexus
MPC5566 Microcontroller Reference Manual, Rev. 2
25-16
Freescale Semiconductor
Reg Index: 127
Access: R/W
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
FPM
MCKO
_GT
MCKO
_EN
MCKO_DIV
0
0
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
PSTAT
_EN
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 25-4. Port Configuration Register (PCR)
Table 25-11. PCR Field Descriptions
Field
Description
31
FPM
Full port mode. Determines if the auxiliary output port uses the full MDO port or a reduced MDO port to
transmit messages.
0 The subset of MDO[3:0] pins are used to transmit messages.
1 All MDO[11:0] pins are used to transmit messages.
Section 6.3.1.48, “Pad Configuration Register 82–75 (SIU_PCR82–SIU_PCR75)
” shows how GPIO is
enabled or disabled by the FPM setting.
30
MCKO_GT
MCKO clock gating control. Enables or disables MCKO clock gating. If clock gating is enabled, the MCKO
clock is gated when the NPC is in enabled mode but not actively transmitting messages on the auxiliary output
port. When clock gating is disabled, MCKO is allowed to run even if no auxiliary output port messages are
being transmitted.
0 MCKO gating is disabled.
1 MCKO gating is enabled.
29
MCKO_EN
MCKO enable. Enables the MCKO clock. When enabled, the frequency of MCKO is determined by the
MCKO_DIV field.
0 MCKO clock is driven to zero.
1 MCKO clock is enabled.
28–26
MCKO_DIV
[2:0]
MCKO division factor. Determines the frequency of MCKO relative to the system clock frequency when
MCKO_EN is asserted. The table below shows the meaning of MCKO_DIV values. In this table, SYS_CLK
represents the system clock frequency.
MCKO_DIV[2:0]
MCKO Frequency
0
SYS_CLK
1
SYS_CLK / 2
2
Reserved
3
SYS_CLK / 4
4
Reserved
5
Reserved
6
Reserved
7
SYS_CLK / 8
Summary of Contents for MPC5566
Page 81: ...Introduction MPC5566 Microcontroller Reference Manual Rev 2 1 24 Freescale Semiconductor...
Page 135: ...Signal Description MPC5566 Microcontroller Reference Manual Rev 2 2 54 Freescale Semiconductor...
Page 189: ...Reset MPC5566 Microcontroller Reference Manual Rev 2 4 20 Freescale Semiconductor...
Page 603: ...Flash Memory MPC5566 Microcontroller Reference Manual Rev 2 13 38 Freescale Semiconductor...
Page 609: ...SRAM MPC5566 Microcontroller Reference Manual Rev 2 14 6 Freescale Semiconductor...
Page 1073: ...MPC5566 Microcontroller Reference Manual Rev 2 22 36 Freescale Semiconductor...
Page 1185: ...Nexus MPC5566 Microcontroller Reference Manual Rev 2 25 92 Freescale Semiconductor...