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参数资料
| 型号： | PADS1298CZXGT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA64 |
| 封装： | 8 X 8 MM, LEAD FREE, PLASTIC, NFBGA-64 |
| 文件页数： | 59/73页 |
| 文件大小： | 957K |
| 代理商： | PADS1298CZXGT |
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PRODUCTPREVIEW
GPIO3
GPIO4
GPIO2
SBAS459C – JANUARY 2010 – REVISED MARCH 2010
www.ti.com
Respiration
The ADS1294/6/8 provide clock signals for driving external respiration circuitry, as shown in Table 13.
Table 13. Respiration Control
RESP_CTRL[1]
RESP_CTRL[0]
DESCRIPTION
0
No respiration
0
1
External respiration circuitry required. The ADS1294/6/8 send clocks that can be
used with the external respiration circuitry through the GPIO2, GPIO3, and GPIO4
pins.
External Respiration Circuitry Option
This mode is set by RESP_CTRL = 01. In this mode, GPIO2, GPIO3, and GPIO4 are automatically configured as
outputs. The phase relationship between the signals is shown in Figure 46. GPIO2 is the exor of GPIO3 and
GPIO4; GPIO3 is the in-phase signal; and GPIO4 is the out-of-phase signal. Note that GPIO2, GPIO3, and
GPIO4 are available for other use in this mode. The frequency is set by the RESP_FREQ[2:0] bits in the
CONFIG4 register. The phase is set by the RESP_PH[2:0] bits in the RESP register.
Figure 46. GPIOx Timing Diagram
62
Copyright 2010, Texas Instruments Incorporated
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