Texas Instruments ADS8402 2. Jumper Settings for Decoder Outputs, 3. Data Bus Connector P3, Reset

Table 3- 2. Jumper Settings for Decoder Outputs

Reference Designator		Description					Jumper Settings
							1-2	2-3
	Set A[2..0] = 0x1 to generate			pulse			Installed†	Not installed
W2			RD
	Set A[2..0] = 0x2 to generate RD pulse						Not installed	Installed
	Set A[2..0]	= 0x3 to generate				pulse	Installed†	Not installed
W5			CONVST
	Set A[2..0]	= 0x4 to generate CONVST pulse					Not installed	Installed
	Set A[2..0]	= 0x5 to generate			pulse		Installed†	Not installed
W4			RESET
	Set A[2..0]	= 0x6 to generate RESET pulse					Not installed	Installed

†Factory set condition

The data bus is available at connector P3, see Table 3- 3 for pin out information.

Table 3- 3. Data Bus Connector P3

Connector.Pin	Signal	Description
P3.1	D0	Buffered Data Bit 0 (LSB)
P3.3	D1	Buffered Data Bit 1
P3.5	D2	Buffered Data Bit 2
P3.7	D3	Buffered Data Bit 3
P3.9	D4	Buffered Data Bit 4
P3.11	D5	Buffered Data Bit 5
P3.13	D6	Buffered Data Bit 6
P3.15	D7	Buffered Data Bit 7
P3.17	D8	Buffered Data Bit 8
P3.19	D9	Buffered Data Bit 9
P3.21	D10	Buffered Data Bit 10
P3.23	D11	Buffered Data Bit 11
P3.25	D12	Buffered Data Bit 12
P3.27	D13	Buffered Data Bit 13
P3.29	D14	Buffered Data Bit 14
P3.31	D15	Buffered Data Bit 15

Note: All even numbered pins of P3 are tied to DGND.

This evaluation module provides direct access to all the analog-to-digital converter control signals via connector J3, see Table 3- 4.

Table 3- 4. Pinout for Converter Control Connector J3

Connector.Pin		Signal		Description
J3.1				Chip select pin. Active low
			CS
J3.3				Read pin. Active low
			RD
J3.5				Convert start pin. Active low
	CONVST
J3.7		BYTE		Byte mode pin. Used for 8-bit buses.
J3.9				Reset pin. Active low.
		RESET
J3.11		BUSY		Converter status output. High when a conversion is in progress.

Note: All even numbered pins of J3 are tied to DGND.

3-2