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DM562AP датащи(PDF) 27 Page - Davicom Semiconductor, Inc. |
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DM562AP датащи(HTML) 27 Page - Davicom Semiconductor, Inc. |
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27 / 48 page ![]() DM562AP V.90 Integrated Data/ Fax/Voice/Speakerphone Modem Device Single Chip with Memory Built in Command Register Definition: 15 10 987 654 3 21 0 Reserved R/W 0 R/W 0 0 R/W R/W R/W 0 0 Parity Error Response Enable/Disable I/O Space Access Enable/Disable Memory Space Access Enable/Disable Master Device Capability Enable/Disable SERR# Driver Enable/Disable Mast Mode Fast Back-To-Back Address/Data Steeping VGA Palette snoop Special Cycle Memory Write and Invalid Bit Default Type Description 15:10 000000 RO Reserved 9 0 RO Master Fast Back-to-back Mode (0 For No Support) The DM6588A does not support master mode fast back-to-back capability and will not generate fast back-to-back cycles. 8 0 RW SERR# Driver Enable/Disable This bit controls the assertion of SERR# signal output. The SERR# output will be asserted on detection of an address parity error and if both this bit and bit 6 are set. 7 0 RO Address/Data Stepping (0 For No Stepping) 6 0 RW Parity Error Response Enable/Disable Setting this bit will enable the DM6588A to assert PERR# on the detection of a data parity error and to assert SERR# for reporting address parity error. 5 0 RO VGA Palette Snooping (0 For No Support) 4 0 RO Memory Write and Invalid (0 For No Support) 3 0 RO Special Cycles (0 For No Implementation) 2 0 RW Master Device Capability Enable/Disable The DM6588A will never support the function. 1 0 RW Memory Space Access Enable/Disable The DM6588A will never support the function. 0 1 RW I/O Space Access Enable/Disable This bit controls the ability of I/O space access. Final 27 Version: DM562AP-DS-F03 Nov. 09, 2007 |
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