ML620Q503/Q504 User's Manual
Chapter 12 Synchronous Serial Port with FIFO
FEUL620Q504 12–20
12.3.4 Data Transfer Timing When SF0CPHA Is "1"
Figure 12-3 shows the data transfer timing when SF0CPHA is "1". For the SCKF0, two cases are shown
(SF0CPOL is "0" and "1").
SSF0 is the slave selection input in Slave mode.
In Master mode, the transfer is started when data is written to SF0DWR. In Slave mode, the transfer is started at
the first edge of SCKF0. The received data is sampled at the falling-edge of SCKF0 in SF0CPOL is “0” and the
rising-edge of SCKF0 in SF0CPOL is “1”. The transmitted data is shifted at the rising-edge of SCKF0 in
SF0CPOL is “0” and the falling-edge of SCKF0 in SF0CPOL is “1”.
CPHA=1
SSN
MOSI
(MOZ=0)
BIT 0
BIT 7
BIT 7
BIT 0
SCK Cycle
1
2
3
4
5
6
7
8
MISO
(SOZ=0)
SCK
(CPOL=0
)
SCK
(CPOL=1
)
MOZ=SOZ=SSZ=SIZE=LSBF=LEAD=LAG=0
の例
です。
Figure 12-3 Clock Waveform When CPHA = 1
12.3.5 Serial Clock Baud Rate
The baud rate is selected by the SF0BR9-0 bit of SF0BRR. This is only valid in Master mode. The baud-rate
clock SCKF0 is generated by dividing HSCLK or LSCLK.
The baud rate (f
SCK
) is calculated as follows.
f
SCK
=f
HLSCLK
/(2×SF0BR9-0)
f
SCK
: Frequency of baud-rate clock
f
HLSCLK
: Frequency of HSCLK or LSCLK
SF0BR
: Value set in SF0BR9-0 of the SF0BRR register (1 to 1023)
If 0 is set the SF0BR register, it is processed as 1.
For SF0BR, it can be selected from 1023 dividing types (2 to 2046).
SF0CPHA=1
SINF0
SSF0
SCKF0
(SF0CPOL=0)
SCKF0
(SF0CPOL=1)
SOUTF0
Example for
SF0MOZ=SF0SOZ=SF0SSZ=SF0SIZ=SF0LSB=SF0LEAD=SF0LAG=0.
SCK Cycle
Содержание LAPIS SEMICONDUCTOR ML620Q503
Страница 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Страница 18: ...Chapter 1 Overview...
Страница 32: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 50: ...Chapter 4 Power Management...
Страница 70: ...Chapter 5 Interrupts...
Страница 134: ...Chapter 6 Clock Generation Circuit...
Страница 161: ...Chapter 7 Time Base Counter...
Страница 170: ...Chapter 8 Timers...
Страница 183: ...Chapter 9 Function Timer FTM...
Страница 231: ...Chapter 10 Watchdog Timer...
Страница 239: ...Chapter 11 Synchronous Serial Port SSIO...
Страница 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Страница 283: ...Chapter 13 UART...
Страница 303: ...Chapter 14 UART with FIFO UARTF...
Страница 327: ...Chapter 15 I2 C Bus Interface...
Страница 344: ...Chapter 16 Port XT...
Страница 350: ...Chapter 17 Port 0...
Страница 361: ...Chapter 18 Port 1...
Страница 368: ...Chapter 19 Port2...
Страница 379: ...Chapter 20 Port 3...
Страница 395: ...Chapter 21 Port 4...
Страница 410: ...Chapter 22 Port 5...
Страница 426: ...Chapter 23 Melody Driver...
Страница 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Страница 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Страница 479: ...Chapter 26 Analog Comparator...
Страница 489: ...Chapter 27 Flash Memory Control...
Страница 505: ...Chapter 28 Voltage Level Supervisor VLS...
Страница 517: ...Chapter 29 LLD circuit...
Страница 519: ...Chapter 30 On Chip Debug Function...
Страница 522: ...Appendixes...
Страница 552: ...Revision History...