CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 367

• Manufacturer Part Number: CS5535-UDCF
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of CS5535-UDCF

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Keyboard Emulation Logic Register Descriptions
6.10.2.2 KEL HCE Input (KEL_HCE_IN)
KEL Memory Offset 104h
Type
Reset Value
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.
6.10.2.3 KEL HCE Output (KEL_HCE_OUT)
KEL Memory Offset 108h
Type
Reset Value
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.
AMD Geode™ CS5535 Companion Device Data Book
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31:8
31:8
Bit
7:0
Bit
7:0
Name
RSVD
Input_Data
Name
RSVD
Output_Data
R/W
000000xxh
R/W
000000xxh
Description
Reserved. Writes have no effect; reads return 0.
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.
Description
Reserved. Writes have no effect; reads return 0.
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.
KEL_HCE_OUT Bit Descriptions
RSVD
RSVD
KEL_HCE_IN Bit Descriptions
KEL_HCE_OUT Register Map
KEL_HCE_IN Register Map
9
9
8
8
31506B
7
7
6
6
5
5
Output_Data
Input_Data
4
4
3
3
2
2
1
1
367
0
0