SIS Documentation
SIS3820
VME Scaler
Page 34 of 79
7.18 (Acquisition) Operation Mode register (0x100)
#define SIS3820_ACQUISITION_MODE 0x100 /* read/write; D32 */
Bit Function
Default
31 reserved
0
30
Operation Mode bit 2
0
29
Operation Mode bit 1
0
28
Operation Mode bit 0
0
27
Reserved
0
26
Reserved
0
25 Reserved
0
24 reserved
0
23
Control outputs inverted
0
22 reserved
0
21
Control output mode bit 1
0
20
Control output mode bit 0
0
19
Control inputs inverted
0
18
Control input mode bit 2
0
17
Control input mode bit 1
0
16
Control input mode bit 0
0
15 reserved
0
14 HISCAL_START_SOURCE_BIT
0
13
select SDRAM add mode
0
12
select SDRAM mode
0
11
Reserved
0
10
Reserved
0
9
Arm/Enable source bit 1
0
8
Arm/Enable source bit 0
0
7
Reserved
0
6
LNE source bit 2
0
5
LNE source bit 1
0
4
LNE source bit 0
0
3
data format bit 1
0
2
data format bit 0
0
1
Reserved
0
0
select non clearing mode
0
The power up default value reads 0x 00000000
7.18.1 Modes of Operation modes (Bits 30:28)
Op Mode bit 2
Op Mode bit 1
Op Mode bit 0
Mode of operation
0 0 0
Scaler/Counter,
Latching Scaler, Preset Scaler
0 0 1
reserved
0 1 0
Multi
channel
Scaler
0 1 1
reserved
1 0 0
reserved
1 0 1
reserved
1 1 0
reserved
1
1
1
SDRAM/FIFO VME write test mode