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GS3590 Datasheet(PDF) 65 Page - Semtech Corporation |
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GS3590 Datasheet(HTML) 65 Page - Semtech Corporation |
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65 / 118 page  GS3590 Final Data Sheet Rev.4 PDS-061414 September 2017 65 of 118 Semtech Proprietary & Confidential www.semtech.com Figure 4-25: Command and Data Word Format Figure 4-26: Command Word 1 and Command Word 2 Details 4.10.6 GSPI Transaction Timing Figure 4-27: GSPI External Interface Timing MSB LSB R / W EMEM AUTOINC UA0 UA1 UA2 UA4 UA3 Command Words UNIT ADDRESS ADDRESS[22:16] B’CAST ALL D15 D14 D13 D12 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D11 D10 Data Word ADDRESS[15:0] A16 A17 A18 A19 A20 A21 A22 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 Command Word 1 Command Word 2 23-bit CSR address field. 5-bit UNIT ADDRESS field providing up to 32 devices to be connected on a single CS. Auto increment read/write access when set. Single read write access when reset. Extended memory mode. When set, the extended memory mode is enabled. When reset, normal GSPI addressing is enabled. Read access when this bit is set. Write access when this bit is reset. When set, the UNIT ADDRESS field is ignored and all data accesses are actioned by the device. When reset, the Unit Address is used to manage data accesses in the device. MSB LSB R / W EMEM AUTOINC UA0 UA1 UA2 UA4 UA3 UNIT ADDRESS ADDRESS[22:16] B’CAST ALL A16 A17 A18 A19 A20 A21 A22 ADDRESS[15:0] A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 X t cmd_GSPI_config t cmd t 9 SCLK SDOUT SDIN X CS Write Mode SDI signal is looped out on SDO A4 A3 A2 A1 A0 Read Mode SDI signal is looped out on SDO A4 A3 A2 A1 A0 Read Data is output on SDO D0 A4 A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D15 D14 D13 D12 D11 D10 D9 D8 SCLK CSb t 0 t 8 t 2 t 3 t 1 t 9 t 6 t 5 t 7 t 4 R/W BCST SDIN EMEM Auto_Inc UA4 UA3 UA2 UA1 UA0 A6 A5 R/W BCST SDOUT EMEM Auto_Inc UA4 UA3 UA2 UA1 UA0 A6 A5 A6 A5 A6 A5 RSV EMEM Auto_Inc RSV EMEM Auto_Inc UA4 UA3 UA2 UA1 UA0 UA4 UA3 UA2 UA1 UA0 SCLK CSb SDOUT SDIN A11 A10 A9 A8 A7 A11 A10 A9 A8 A7 A13 A12 A13 A12 A18 A17 A16 A15 A14 A18 A17 A16 A15 A14 A20 A19 A20 A19 A22 A21 A22 A21 A11 A10 A9 A8 A7 A11 A10 A9 A8 A7 A13 A12 A13 A12 A18 A17 A16 A15 A14 A18 A17 A16 A15 A14 A20 A19 A20 A19 A22 A21 A22 A21 R/W R/W |
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