ZHCSE48B September 2015 – January 2019 ADC31JB68
PRODUCTION DATA.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DF | SYS)CM[1:0] | Reserved | SYSG_EN | Reserved | |||
R/W | R/W | R/W | R/W | R/W |
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7 | DF | R/W | 1 | Output data format
0 : Offset binary 1 : Signed 2s complement (default) |
6:5 | SYS_CM[1:0] | R/W | 10 | SYSREF Common-Mode Configuration
When the SYSREF signal interface is DC coupled, the SYSREF+/- input receiver must be configured to appropriately match the common-mode of the received signal. Set the register field according to the expected common-mode. 00 : 0.4 V - 0.59 V (RTAIL = Open) 01 : 0.6 V - 0.99 V (RTAIL = 4 kΩ) 10 : 1.0 V - 1.49 V (RTAIL = 1 kΩ, default) 11 : 1.5 V - 2.0 V (RTAIL = 0 Ω)
|
4:3 | Reserved | R/W | 00 | Reserved and must be written with 00. |
2 | SYSG_EN | R/W | 0 | SYSREF detection gate enable
0 : SYSREF gate is disabled; (input is ignored, default) 1 : SYSREF gate is enabled |
1:0 | Reserved | R/W | 01 | Reserved. Must be written with 01. |