Quad Serial Peripheral Interface (QuadSPI)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor
1067
30.7.2
Serial Flash Clock Frequency Limitations
Certain commands of the Winbond serial flash devices are limited in the frequency applied to the serial
flash device on command execution. To allow for higher clock speeds for the remaining commands the
serial flash device clock can be divided by 2 (half speed) when executing such a command limited in
frequency by setting the QSPI_SMPR[HSENA] bit. Refer to
for the commands affected.
30.8
Internal Sampling of Serial Flash Input Data
Depending from the actual implementation there is a delay between the internal clocking in the QuadSPI
module and the external serial flash device. This means that the incoming data from the serial flash appear
this delay later in time at the QuadSPI sampling logic w.r.t. internal reference clock. Refer to
for an overview of this scheme.
Figure 30-36. Serial Flash Sampling Clock Overview
NOTE
The arrival of the serial flash data in the sampling stage of the QuadSPI
module are given in fig
below. Note that the amount of the
total delay t
Del,total
is very specific to the characteristics of the actual
implementation.
9Fh
Size
FFh
Siz
e
opt. FFh
2
1
‘read’ bit controls if 8 SCLK clocks are added to read the device ID, equivalent to Size = 1 (1byte to read)
2
To reset continuos read mode while in Dual I/O operations, set size to 1 and Byte 1 to FFh (ICR = 0001FFFFh). To
reset the continuos read mode while in Quad I/O operations, only instruction FFh is required (ICR = 000000FFh).
Table 30-53. Instruction Code Options on Winbond Devices (continued)
Instruction
Code
Byte 3
Byte 2
Byte 1
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
QUADSPI
SCK—Serial Flash Clock
SFM
Sampling
SFM
Clock Gen
Serial Flash
Data
Out
Clock
SI_IO[0:3]—Serial Flash Data
1
2
3
4
5
Содержание MPC5602S
Страница 76: ...Overview MPC5606S Microcontroller Reference Manual Rev 7 74 Freescale Semiconductor...
Страница 82: ...Memory Map MPC5606S Microcontroller Reference Manual Rev 7 80 Freescale Semiconductor...
Страница 112: ...Signal Description MPC5606S Microcontroller Reference Manual Rev 7 110 Freescale Semiconductor...
Страница 166: ...Analog to Digital Converter ADC MPC5606S Microcontroller Reference Manual Rev 7 164 Freescale Semiconductor...
Страница 182: ...Boot Assist Module BAM MPC5606S Microcontroller Reference Manual Rev 7 180 Freescale Semiconductor...
Страница 234: ...Clock Description MPC5606S Microcontroller Reference Manual Rev 7 232 Freescale Semiconductor...
Страница 286: ...Crossbar Switch XBAR MPC5606S Microcontroller Reference Manual Rev 7 284 Freescale Semiconductor...
Страница 470: ...e200z0h Core MPC5606S Microcontroller Reference Manual Rev 7 468 Freescale Semiconductor...
Страница 524: ...Enhanced Direct Memory Access eDMA MPC5606S Microcontroller Reference Manual Rev 7 522 Freescale Semiconductor...
Страница 546: ...Error Correction Status Module ECSM MPC5606S Microcontroller Reference Manual Rev 7 544 Freescale Semiconductor...
Страница 669: ...Flash Memory MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 667...
Страница 670: ...Flash Memory MPC5606S Microcontroller Reference Manual Rev 7 668 Freescale Semiconductor...
Страница 716: ...FlexCAN MPC5606S Microcontroller Reference Manual Rev 7 714 Freescale Semiconductor...
Страница 882: ...LIN Controller LINFlex MPC5606S Microcontroller Reference Manual Rev 7 880 Freescale Semiconductor...
Страница 901: ...Memory Protection Unit MPU MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 899...
Страница 902: ...Memory Protection Unit MPU MPC5606S Microcontroller Reference Manual Rev 7 900 Freescale Semiconductor...
Страница 955: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 953...
Страница 956: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 954 Freescale Semiconductor...
Страница 1072: ...Quad Serial Peripheral Interface QuadSPI MPC5606S Microcontroller Reference Manual Rev 7 1070 Freescale Semiconductor...
Страница 1096: ...Reset Generation Module MC_RGM MPC5606S Microcontroller Reference Manual Rev 7 1094 Freescale Semiconductor...
Страница 1106: ...Real Time Clock RTC API MPC5606S Microcontroller Reference Manual Rev 7 1104 Freescale Semiconductor...
Страница 1186: ...Stepper Stall Detect SSD MPC5606S Microcontroller Reference Manual Rev 7 1184 Freescale Semiconductor...
Страница 1213: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1211...
Страница 1214: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 1212 Freescale Semiconductor...
Страница 1238: ...Voltage Regulators and Power Supplies MPC5606S Microcontroller Reference Manual Rev 7 1236 Freescale Semiconductor...
Страница 1252: ...Wakeup Unit WKPU MPC5606S Microcontroller Reference Manual Rev 7 1250 Freescale Semiconductor...
Страница 1258: ...Registers Under Protection MPC5606S Microcontroller Reference Manual Rev 7 1256 Freescale Semiconductor...
Страница 1323: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1321...
Страница 1324: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 1322 Freescale Semiconductor...