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PC87591L Datasheet(PDF) 314 Page - National Semiconductor (TI) |
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PC87591L Datasheet(HTML) 314 Page - National Semiconductor (TI) |
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314 / 437 page  Host Controller Interface Modules (Continued) www.national.com 314 Revision 1.07 5.4.1 Core Access to Host-Controlled Module Registers The following set of registers is accessible only by the core. The registers are powered by VCC. For a summary of the abbreviations used for Register Type, see “Register Abbreviations and Access” on page 34. Core Access to Host-Controlled Modules Register Map Indirect Host I/O Address Register (IHIOA) This register defines the host I/O address for read or write transactions from/to the Host-Controlled modules. The I/O ad- dress is an offset from the least significant bits of the device address. The accessed device is selected using the Core to SIB Modules Access Enable Register (CRSMAE); see page 316. Location: 00 FCE016 Type: R/W Indirect Host Data Register (IHD) This register holds host data for read or write transactions from/to the Host-Controlled modules. Location: 00 FCE216 Type: R/W Mnemonic Register Name Type IHIOA Indirect Host I/O Address R/W IHD Indirect Host Data R/W LKSIOHA Lock SuperI/O Host Access R/W SIOLV SuperI/O Access Lock Violation R/W1C CRSMAE Core to SIB Modules Access Enable R/W SIBCTRL SIB Control Varies per bit Bit 15 14 13 12 11 10 9876543210 Name Reserved Indirect Host I/O Offset Reset 0 00000 0 0 0 0 0 0 0 0 0 0 Bit Description 7-0 Indirect Host I/O Offset. Only offsets within the device range are allowed. Other offsets may have unpredictable results. 15-8 Reserved. Bit 76543210 Name Indirect Host Data Reset 00000000 Bit Description 7-0 Indirect Host Data. |
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