220.127.116.11.2 Internal Respiration Circuitry With External Clock (ADS1292R)
This mode is set by RESP_CTRL = 1. In this mode GPIO1 and GPIO2 are automatically configured as inputs. GPIO1 and GPIO2 cannot be used for other purposes. The signals must be provided as described in Figure 43. An external, synchronous master clock (CLK) is required for this mode in order to operate.
Figure 43. Internal Respiration (RESP_CTRL = 1) Timing Diagram
Table 12. Timing Characteristics for Figure 43(1)
||1.65 V ≤ DVDD ≤ 3.6 V
||Respiration phase delay
|| Modulation clock rising edge to XOR signal
(1) Specifications apply from –40°C to +85°C.