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TUSB7340 Datasheet(PDF) 71 Page - Texas Instruments |
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TUSB7340 Datasheet(HTML) 71 Page - Texas Instruments |
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71 / 117 page  TUSB7320, TUSB7340 www.ti.com SLLSE76M – MARCH 2011 – REVISED JULY 2015 7.5.3.2.4 Host Controller Structural Parameters 2 This read only register defines basic structural parameters supported by the TUSB73X0. BAR0 register offset: 08h Register type: Read-Only Default value: 0C00 00F1h Table 137. HC Capability Register 08h Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 No. Reset 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 State Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 No. Reset 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 1 State Table 138. HC Structural Parameters 2 Description BIT FIELD NAME ACCESS DESCRIPTION Max Scratchpad Buffers. This field indicates the number of Scratchpad 31:27 MAX_SCRATCH_BUF r Buffers system software reserves. The TUSB73X0 uses one Scratchpad Buffer. Scratchpad Restore. This bit is 1b to indicate that the TUSB73X0 26 SPR r requires the integrity of the Scratchpad Buffer space to be maintained across power events. 25:13 RSVD r Reserved. Returns zeros when read. 12:8 IOC_INTERVAL r IOC Interval. This field is 0b. Event Ring Segment Table Max. This field is 1111b to indicate that the 7:4 ERST_MAX r TUSB73X0 supports up to 32K Event Ring Segment Table entries. Isochronous Scheduling Threshold. This field is 0001b to indicate that 3:0 IST r software can add a TRB no later than 1 Microframes before that TRB is scheduled to be executed. 7.5.3.2.5 Host Controller Structural Parameters 3 This read only register defines basic structural parameters supported by the TUSB73X0. BAR0 register offset: 0Ch Register type: Read-Only Default value: 07FF 00A0h Table 139. HC Capability Register 0Ch Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 No. Reset 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 State Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 No. Reset 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 State Copyright © 2011–2015, Texas Instruments Incorporated Submit Documentation Feedback 71 Product Folder Links: TUSB7320 TUSB7340 |
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