ML620Q503/Q504 User's Manual
Chapter 12 Synchronous Serial Port with FIFO
FEUL620Q504 12–31
12.3.17 Hi-Z Operation
Figure 12-14 shows an example of using Hi-Z (SF0MOZ, SF0SOZ, and SF0SSZ).
The Hi-Z transmit interval of the master is limited to the IDLE time shown below.
To reduce the effect of noise in the Hi-Z state, "1"/"0" is fixed 1SCKF0 before the transmission starts (HiZ guard
interval), and "1"/"0" is fixed during the DTL time of the transfer interval. If any of the SF0MOZ, SF0SOZ, and
SF0SSZ bits is set to 1, the HiZ guard interval is inserted before the transmission starts.
Figure 12-24 Hi-Z Operation
12.3.18 Interval from SF0MST Setting to Transfer Start
The SSIOF bus (SOUTF0, SCKF0, and SSF0) remains high impedance until Master mode is set.
After setting SF0MSTR, wait for at least 100ns before starting the transmission (SF0SPE = 1, or transfer started
by data write).
12.3.19 Pin Settings
To enable the SSIOF function, the applicable bit of each related port register needs to be set. See Chapter 19,
“Port 2”, Chapter 20, “Port 3”, Chapter 21, “Port 4”, and Chapter 22, “Port 5” for details about the port registers.
These settings should be completed before use.
For SOUTF0, SINF0, SCKF0 and SSF0, the ports can be selected from several possibilities.
Be sure to select one of the following combinations of ports for SOUTF0/SINF0/SCKF0/SSF0.
SSIOF pin
Combination 1
Combination 2
Combination 3
Combination 4
SSIOF
SOUTF0,SINF0,
SCKF0,SSF0
P20,P21,
P22,P23
P34,P35,
P36,P37
P44,P45,
P46,P47
P54,P55,
P56,P57
Note that only one port can be selected as port.
If using P22 as SCKF0 in master mode, the max clock output frequency is 2MHz.
SSF0(SF0SOZ=1)
SSF0(SF0SOZ=0)
SCKF0
SOUTF0
(SF0MOZ=1)
SOUTF0
(SF0MOZ=0)
SOUTF0
(SF0SOZ=1)
SOUTF0
(SF0SOZ=0)
HiZ
HiZ
HiZ
HiZ
HiZ
0
0
0
0 1
1
1
1
7
7
7
7
0
1
7
7
7
7
1
1
1
0
0
0
IDLE
SCK
DTL
IDLE
SCK_state
DTL
HiZ output interval
HiZ guard
interval
HiZ guard
interval
LEAD_state
LEAD_state
LAG_state
HiZ
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...