參數(shù)資料
型號： CXD2401R
廠商： Sony Corporation
英文描述： Electronic Iris Control IC(電子式光圈控制芯片)
中文描述： 電子光圈控制IC（電子式光圈控制芯片）
文件頁數(shù)： 10/21頁
文件大?。?/td> 318K
代理商： CXD2401R
– 10 –
CXD2401R
Control pin
Detailed description
The operations of SPUPV, IRIN, and SPDNV pins differ according to the mode (IRENB control)
of the electronic iris and electronic shutter. The operations are described below for each case.
SPUPV
(Pin 38)
IRIN
(Pin 39)
SPDNV
(Pin 40)
D7
D6
D5
D4
D3
D2
D1
D0
SPUPV (ED0)
IRIN (ED1)
SPDNV (ED2)
IRENB = Low: When the operation of electronic shutter is assigned
PS = Low: When inputting serial data is assigned
SPUPV : Strobe input pin
IRIN
: Clock input pin
SPDNV : Data input pin
Ld : Shutter speed data
Ex.: Ld = 100 [decimal]
<Shutter speed calculation formula> Shutter speed = 1/n [s]
0
D7
D6
D5
D4
D3
D2
D1
D0
1
1
0
0
1
0
0
MSB
LSB
Ld
(decimal)
255 to 248
247 to 241
240 to 232
231 to 220
219 to 202
201 to 151
150 to 114
113 to 107
106 to 98
97 to 86
85 to 69
68 to 0
[261 – {(255 – Ld)
×
7 + 2}]
×
63.56 + 31
[261 – {(247 – Ld)
×
5 + 58}]
×
63.56 + 31
[261 – {(240 – Ld0
×
4 + 93}]
×
63.56 + 31
[261 – {(231 – Ld)
×
3 + 129}]
×
63.56 + 31
[261 – {(219 – Ld)
×
2 + 165}]
×
63.56 + 31
[261 – {(201 – Ld)
×
1 + 201}]
×
63.56 + 31
[875 – {(150 – Ld)
×
11 + 253}]
×
0.978 + 0.047
[875 – {(113 – Ld)
×
5 + 660}]
×
0.978 + 0.047
[875 – {(106 – Ld)
×
4 + 695}]
×
0.978 + 0.047
[875 – {(97 – Ld)
×
3 + 731}]
×
0.978 + 0.047
[875 – {(85 – Ld)
×
2 + 767}]
×
0.978 + 0.047
[875 – {(68 – Ld)
×
1 + 801}]
×
0.978 + 0.047
[311 – {(255 – Ld)
×
10 + 2}]
×
64 + 30.77
[311 – {(250 – Ld)
×
7 + 52}]
×
64 + 30.77
[311 – {(242 – Ld)
×
5 + 108}]
×
64 + 30.77
[311 – {(235 – Ld)
×
4 + 143}]
×
64 + 30.77
[311 – {(226 – Ld)
×
3 + 179}]
×
64 + 30.77
[311 – {(214 – Ld)
×
2 + 215}]
×
64 + 30.77
[311 – {(196 – Ld)
×
1 + 251}]
×
64 + 30.77
[923 – {(145 – Ld)
×
11 + 303}]
×
0.987 + 0.721
[923 – {(108 – Ld)
×
5 + 710}]
×
0.987 + 0.721
[923 – {(101 – Ld)
×
4 + 745}]
×
0.987 + 0.721
[923 – {(92 – Ld)
×
3 + 781}]
×
0.987 + 0.721
[923 – {(80 – Ld)
×
2 + 817}]
×
0.987 + 0.721
[923 – {(63 – Ld)
×
1 + 851}]
×
0.987 + 0.721
255 to 251
250 to 243
242 to 236
235 to 227
226 to 215
214 to 197
196 to 146
145 to 109
108 to 102
101 to 93
92 to 81
80 to 64
63 to 0
NTSC: NTSC (Pin 48) = L
n = 1/m
×
10
6
m
PAL: NTSC (Pin 48) = H
n = 1/m
×
10
6
m
Ld
(decimal)
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