參數(shù)資料
型號: SPL11A
廠商: Electronic Theatre Controls, Inc.
英文描述: SPL11A PROGRAMMING GUIDE
中文描述: SPL11A節(jié)目指南
文件頁數(shù): 15/42頁
文件大?。?/td> 1865K
代理商: SPL11A
SPL11A PROGRAMMING GUIDE
PRELIMINARY
5.2.2 How to use RFC function
Generate RC pulse
Step 1: Set one of IOA3/IOA4/IOA5 ports to be passed-through for each measurement; the
other two ports are Input-floating.
Step 2: Set IOA1 to Input floating.
Step 3: Enable RFC function ($0013 register) to generate RC-Oscillation pulse.
Measurement
Long RC time constant: use high-speed clock to sample RC-pulse in
P_09H_TIMER_SET($0009)
Step 1: GroupA timer-clock source comes from HSCK/N_TIMER (HSCK/N where N is the
divisor of HSCK, selected in P_09H_TIMER_SET($0009)) .
Step 2: GroupB timer-clock source comes from EXT2 divided by 2 (EXT2CFG=1)
Step 3: Sample the number of HSCK pulses in one RC pulse.
Short RC time constant: use LSCK divided by M (where M is the divisor of LSCK, selected in
P_09H_TIMER_SET($0009) ) as time-base to count RC-pulse in P_09H_TIMER_SET($0009).
Step 1: GroupA timer-clock source comes from EXT2.
Step 2: GroupB timer-clock source comes from LSCK/M_TIMER (LSCK/M as time-base).
Step 3: Count the number of RC pulses in LSCK/M time-base.
5.2.3 Function description of PortA(IOA[7:0])
Sunplus Technology Co., Ltd.
PAGE 15
V0.1 – OCT. 23, 2002
IOA7
Schmitt
-
Special Function
1. I/O
2. Pass-through: IROUT
1. I/O
2. Pass-through: TONE
1. I/O
2. Pass-through: HSCK/N_TIMER
3. LCD output: COM8
4. Output pin for RFC application
1. I/O
2. Pass-through: LSCK
3. LCD output: COM11
4. Output pin for RFC application
1. I/O
2. LCD output: SEG29
3. Output pin for RFC application
1. I/O
2. LCD output: SEG28
1. I/O
2. EXT2 interrupt with P/N edge
3. Timer input
4. Input pin for RFC application
1. I/O
2. EXT1 interrupt with P/N edge
3. Timer input
IOA6
-
IOA5
-
IOA4
-
IOA3
-
IOA2
-
IOA1
Yes
IOA0
Yes
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