TS-4600 DIO

From Technologic Systems Manuals
Revision as of 14:21, 27 October 2016 by Kris (talk | contribs) (Changed in-page links)

This board uses both CPU and a DIO controller in the FPGA. The CPU DIO typically have up to 4 functions associated with various pins (I2C, PWM, SPI, etc). See the CPU manual CPU manual for the complete listing and for information on how to control these DIO. This section only lists FPGA DIO.
Bit masking: Any bits not expressly mentioned here should be masked out. Direction setting: 0 is input, 1 is output.

All FPGA DIO are controlled by three distinct register types: Direction, Input Data, and Output Data. To use any DIO pin, the direction register must be set (0 for input, 1 for output), then either the input register may be read, or the output register may be written to. These registers are described in the Syscon memory table.
For example, to write to DIO_0, bit 0 (the LSB) of 0xC (The direction register for DIO_0 through DIO_15) must be set high, then the desired value (high = 1 low = 0) should be written to bit 0 of 0xA (the Output Data register for DIO_0 through DIO_15). Alternatively to read the status of that pin, the Direction Register must be set low, then bit zero of 0x8 would reflect the status of that pin.

The TS-4600 FPGA contains our EVGPIO core, event driven GPIO. This allows for atomic setting of DIO pins (no need to read-modify-write) as well as setting up pins to generate interrupts on state changes. See the EVGPIO and Interrupts sections for more information.
All 69 of the DIO from the FPGA will default to the DIO mode. These pins coming from the FPGA are all 3.3V tolerant. To manipulate these DIO you can access the Syscon, either through tshwctl or a custom application.

DIO Number Connector Location Alternate Function
0 CN1_93 N/A
1 CN1_91 N/A
2 CN1_89 N/A
3 CN1_87 12.5MHz/14.28MHz clock
4 CN1_85 N/A
5 CN1_83 Board ID
6 CN1_81 ADC_DAT
9 CN1_73 External Reset
10 CN1_71 XUART2 TX_EN
11 CN1_69 N/A
12 CN1_67 XUART0 TX_EN
13 CN1_65 XUART3 TX_EN
14 CN1_63 XUART4 TX_EN
15 CN2_97 CAN1_TXD
16 CN2_99 CAN1_RXD
17 CN1_97 BUS_WAIT#
18 CN1_99 BUS_BHE#
19 CN1_100 BUS_CS#
20 CN1_98 BUS_DIR, MODE2
21 CN1_96 BUS_ALE#
22 CN1_94 MUX_AD_00
23 CN1_92 MUX_AD_01
24 CN1_90 MUX_AD_02
25 CN1_88 MUX_AD_03
26 CN1_86 MUX_AD_04
27 CN1_84 MUX_AD_05
28 CN1_82 MUX_AD_06
29 CN1_80 MUX_AD_07
30 CN1_78 MUX_AD_08
31 CN1_76 MUX_AD_09
32 CN1_74 MUX_AD_10
33 CN1_72 MUX_AD_11
34 CN1_70 MUX_AD_12
35 CN1_68 MUX_AD_13
36 CN1_66 MUX_AD_14
37 CN1_64 MUX_AD_15
38 CN2_72 N/A
39 CN2_70 N/S
40 CN2_68 N/A
41 CN2_66 XUART0 CTS
42 CN2_64 XUART1 CTS
43 CN2_62 XUART2 CTS
44 CN2_60 XUART3 CTS
45 CN2_58 XUART4 CTS
46 CN2_56 XUART5 CTS
47 CN2_52 N/A
48 CN2_32 N/A
49 CN1_61 N/A
50 CN1_59 N/A
51 CN1_60 N/A
52 CN1_58 N/A
53 CN2_78 XUART0 TXD
54 CN2_80 XUART0 RXD
55 CN2_82 XUART1 TXD
56 CN2_84 XUART1 RXD
57 CN2_86 XUART2 TXD
58 CN2_88 XUART2 RXD
59 CN2_90 XUART3 TXD
60 CN2_92 XUART3 RXD
61 CN2_94 XUART4 TXD
62 CN2_96 XUART4 RXD
63 CN2_98 XUART5 TXD
64 CN2_100 XUART5 RXD
65 CN2_67 SPI_MOSI [1]
66 CN2_71 SPI_CLK [1]
67 CN2_69 SPI_MISO [1]
68 CN2_65 SPI_FRM [1]
69 CN1_4 N/A
  1. 1.0 1.1 1.2 1.3 Note that the DIO and SPI functions cannot be used simultaneously. A bitstream with the SPI core disabled must be soft-reloaded in order to use these pins as DIO. See the FPGA Programming section for more information.