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CS5535 数据表(PDF) 350 Page - National Semiconductor (TI) |
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CS5535 数据表(HTML) 350 Page - National Semiconductor (TI) |
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350 / 555 page  www.national.com 350 Revision 0.8 KEL Register Descriptions (Continued) 5.10.2.2 KEL HCE Input (KEL_HCE_IN) I/O data that is written to I/O Port 060h and 064h is captured in the HCE_Input register when emulation is enabled. This register may be read or written directly by accessing it with its memory address in the KEL’s operational register space. When accessed directly via the KEL’s operational address space, reads and writes of this register have no side effects. 5.10.2.3 KEL HCE Output (KEL_HCE_OUT) The data placed in the HCE_Output register by the emulation software is returned when I/O Port 060h is read and emula- tion is enabled. On a read of this location, the OutputFull bit in HCE_Status is cleared to 0. KEL Memory Offset 104h Type R/W Reset Value 000000xxh KEL_HCE_IN Register Map 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9876543210 RSVD Input_Data KEL_HCE_IN Bit Descriptions Bit Name Description 31:8 RSVD Reserved. Writes have no effect; reads return 0. 7:0 Input_Data Input Data. This register holds data normally read by SSM software. The register value is normally established by a write to I/O Port 060h or 064h. However, the value can also be established by a direct write. Such direct writes have no side effects. KEL Memory Offset 108h Type R/W Reset Value 000000xxh KEL_HCE_OUT Register Map 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9876543210 RSVD Output_Data KEL_HCE_OUT Bit Descriptions Bit Name Description 31:8 RSVD Reserved. Writes have no effect; reads return 0. 7:0 Output_Data Output Data. This register holds data normally written by SSM software. It is returned when an I/O read of I/O Port 060h is performed. Writes to this register have no side effects. After writing this register, SSM software normally sets OutputFull in HCE_Status. |
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