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XIO2001IPNP 数据表(PDF) 102 Page - Texas Instruments |
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XIO2001IPNP 数据表(HTML) 102 Page - Texas Instruments |
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102 / 145 page  8.6 Memory-Mapped TI Proprietary Register Space The programming model of the memory-mapped TI proprietary register space is unique to this device. All bits marked with a ☆ are sticky bits and are reset by a global reset ( GRST) or the internally-generated power-on reset. All bits marked with a(1) are reset by a PCI Express reset ( PERST), a GRST or the internally- generated power-on reset. The remaining register bits are reset by a PCI Express hot reset, PERST, GRST, or the internally-generated power-on reset. Table 8-74. Device Control Memory Window Register Map REGISTER NAME OFFSET Reserved Revision ID Device control map ID 000h Reserved 004h–03Ch GPIO data(1) GPIO control (1) 040h Serial-bus control and status(1) Serial-bus slave address(1) Serial-bus word address(1) Serial-bus data(1) 044h Serial IRQ edge control(1) Reserved Serial IRQ mode control(1) 048h Reserved Serial IRQ status(1) 04Ch Cache Timer Transfer Limit(1) PFA Request Limit(1) 050h Cache Timer Upper Limit(1) Cache Timer Lower Limit(1) 054h Reserved 058h–FFFh (1) These bits are reset by a PCI Express reset ( PERST), a GRST, or the internally-generated power-on reset. 8.6.1 Device Control Map ID Register The device control map ID register identifies the TI proprietary layout for this device control map. The value 04h identifies this as a PCI Express-to-PCI bridge. Device control memory window register offset: 00h Register type: Read-only Default value: 04h BIT NUMBER 7 6 5 4 3 2 1 0 RESET STATE 0 0 0 0 0 1 0 0 8.6.2 Revision ID Register The revision ID register identifies the revision of the TI proprietary layout for this device control map. The value 00h identifies the revision as the initial layout. Device control memory window register offset: 01h Register type: Read-only Default value: 00h BIT NUMBER 7 6 5 4 3 2 1 0 RESET STATE 0 0 0 0 0 0 0 0 XIO2001 SCPS212J – MAY 2009 – REVISED JANUARY 2021 www.ti.com 102 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: XIO2001 |
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