參數(shù)資料
型號(hào): AD9937
廠商: Analog Devices, Inc.
英文描述: CCD Signal Processor with Precision Timing⑩ Generator
中文描述: CCD信號(hào)處理器精確定時(shí)⑩發(fā)生器
文件頁(yè)數(shù): 30/44頁(yè)
文件大?。?/td> 410K
代理商: AD9937
REV. 0
–30–
AD9937
1
2
3
4
5
6
TG1A
TG1B
TG3A
TG3B
OFD
PROGRAMMABLE CLOCK POSITIONS
1. TGACTLINE (PROGRAMMABLE AT MODE_REG(1))
2. TGTOG1_0 (PROGRAMMABLE AT SHUT_REG(1))
3. TGTOG2_0 (PROGRAMMABLE AT SHUT_REG(1))
4. TGTOG1_1 (PROGRAMMABLE AT SHUT_REG(2))
5. TGTOG2_1 (PROGRAMMABLE AT SHUT_REG(2))
6. OFDTOG1_0 (PROGRAMMABLE AT SHUT_REG(3))
7. OFDTOG2_0 (PROGRAMMABLE AT SHUT_REG(3))
001
002
003
000
000
11-BIT
VD COUNTER
12-BIT
HD COUNTER
VD
001
HD
LAST LINE
N – 1
N 2048
7
t
EXP
Figure 24. Horizontal Timing Example with TGACTLINE = 1 and OFDNUM = 2
VD
HD
TG1A
TG1B
TG3A
TG3B
OFD
LAST LINE
1
2
SECOND OFD PULSE ADDED IN THE
LAST LINE FOR GREATER EXPOSURE
CONTROL PRECISION
PROGRAMMABLE CLOCK POSITIONS
1. OFDHPTOG1 (PROGRAMMABLE AT CONTROL REGISTER 0x11)
2. OFDHPTOG2 (PROGRAMMABLE AT CONTROL REGISTER 0x11)
t
EXP
Figure 25. High Precision
Table XIV. OFD Registers
Length
(Bits)
Register
Type
Register Name
Range
Description
OFDEN
OFDNUM
OFDHPTOG1
OFDHPTOG2
OFDTOG1_0
OFDTOG2_0
OFDTOG1_1
OFDTOG2_1
OFDPATSEL
1
11
12
12
12
12
12
12
1
Control 0x10
Control 0x10
Control 0x11
Control 0x11
Shut_Reg(3)
Shut_Reg(3)
Shut_Reg(4)
Shut_Reg(4)
Mode_Reg(1)
High/Low
0
2048 Pulses
0
4095 Pixel Locations
0
4095 Pixel Locations
0
4095 Pixel Locations
0
4095 Pixel Locations
0
4095 Pixel Locations
0
4095 Pixel Locations
High/Low
OFD Output Enable Control (0 = Disable, 1 = Enable)
Total Number of OFD Pulses per Field
High Precision Toggle Position 1. See Figure 24.
High Precision Toggle Position 2. See Figure 24.
OFD0 Pulse Toggle Position 1
OFD0 Pulse Toggle Position 2
OFD1 Pulse Toggle Position 1
OFD1 Pulse Toggle Position 2
OFD Pattern Selector (0 = OFD0, 1 = OFD1)
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