參數(shù)資料
型號(hào)： AD9920ABBCZRL
廠(chǎng)商： Analog Devices Inc
文件頁(yè)數(shù)： 76/112頁(yè)
文件大?。?/td> 0K
描述： IC PROCESSOR CCD 12BIT 105CSPBGA
標(biāo)準(zhǔn)包裝： 2,000
位數(shù)： 12
電壓 - 電源，模擬： 1.6 V ~ 2 V
電壓 - 電源，數(shù)字： 1.6 V ~ 2 V
封裝/外殼： 105-LFBGA，CSPBGA
供應(yīng)商設(shè)備封裝： 105-CSPBGA（8x8）
包裝： 帶卷 (TR)
AD9920A
Rev. B | Page 66 of 112
Single-Field Toggles
Single-field toggles occur in the next field only. There can be up to
four toggles in the field. The mode is set with GP_PROTOCOL
equal to 1, and the toggles are triggered in the next field by
writing to the MANUAL_TRIG register (Register 0x70, Bits[13:6]).
In this mode, the field toggle settings must be set to a value of 1.
Two consecutive fields do not have activity. If toggles are required
to repeat in the next field, the MANUAL_TRIG register can be
written to in consecutive fields.
Preparation
The GP toggle positions can be programmed any time prior to
use. For example,
0x7C
← 0x000A001
0x7D
← 0x0002000
0x7E
← 0x000000F
0x7F
← 0x00C4002
0x80
← 0x0004000
0x81
← 0x00000B3
Details
A) Field 0:
0x70
← 0x0000040
0x73
← 0x0000001
B) Field 1:
0x73
← 0x0000000
VD
1
REGISTER WRITE
AB
GP1_PROTOCOL 0
1
0
GPO1
NOTES
1. THE FIELD TOGGLE POSITION MUST BE SET TO 1 WHEN
GP PROTOCOL IS 1.
CAUTION! THE GP_PROTOCOL MUST BE RESET BEFORE
USING AGAIN.
06878-
084
Figure 84. Single-Field Toggles Using GP_PROTOCOL = 1
Scheduled Toggles
Scheduled toggles are programmed to occur during upcoming
fields. For example, there can be one toggle in Field 1, two
toggles in Field 3, and a last toggle in Field 4. The mode is set
with GP_PROTOCOL = 5 or GP_PROTOCOL = 6. Mode 5
tells the GPO to obey the primary field counter, and Mode 6
tells the GPO to obey the secondary field counter.
Note that for GP_PROTOCOL = 5 or GP_PROTOCOL = 6, at
least one toggle must be programmed in Field 1 for the AD9920A
to output the proper pattern on the GPO pins. If no toggle is
programmed in Field 1, all subsequent toggle positions are
ignored when GP_PROTOCOL = 5 or GP_PROTOCOL = 6.
This restriction applies only to GP_PROTOCOL = 5 or
GP_PROTOCOL = 6.
Preparation
The GP toggle positions can be programmed any time prior to
use. For example,
0x7C
← 0x00C4001
0x7D
← 0x0004000
0x7E
← 0x00000B3
Details
A) Field 0:
0x70
← 0x0000008
0x73
← 0x0000006
VD
1
2
REGISTER WRITE
A
GP1_PROTOCOL 0
SECONDARY
COUNT
01
6
20
GPO1
CAUTION! THE PRIMARY COUNTER REGULATES THE SUBCK
AND VSG ACTIVITY. LINK A GPO TO THE PRIMARY COUNTER
ONLY IF SUBCK AND VSG ACTIVITY WILL OCCUR DURING
EXPOSURE/READ.
(IDLE)
06
87
8-
0
85
Figure 85. Scheduled Toggles Using GP_PROTOCOL = 6
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