CY82C693UB Cypress Semiconductor Corporation., CY82C693UB Datasheet - Page 106

• Manufacturer Part Number: CY82C693UB
• Description: Hypercache Tm / Stand-alone Pci Peripheral Controller With Usb
• Manufacturer: Cypress Semiconductor Corporation.

Keyboard/Mouse Register 1: Command Byte Register. Stored in keyboard RAM at location 20H; A 20H command must be
written to the input buffer at 64H, Data is accessed at 60H.
Bit
7
6
5
4
3
2
1
0
Function
Reserved. Must be set to zero.
Scan Code Translation:
0:
1:
Mouse Interface Control:
0:
1:
Keyboard Interface Control:
0:
1:
When the keyboard interface is disabled, the KBCLK signal is driven LOW. Nothing can be
sent or received.
KEYLOCK Override Control:
0:
1:
System Flag:
0:
1:
Output Buffer Filled with Mouse Data Interrupt Control:
0:
1:
Output Buffer Filled with Keyboard Data Interrupt Control:
0:
1:
Do not translate scan codes.
Scan codes are translated to AT scan codes.
Enable PS/2 mouse interface.
Disable PS/2 mouse interface.
Enable keyboard interface.
Disable keyboard interface.
Normal Operation.
Override the KEYLOCK signal. This will cause the keyboard to be unlocked
regardless of the state of the KEYLOCK signal.
Report 0 on bit 2 of Status Register during status reads.
Report 1 on bit 2 of Status Register during status reads.
Will not send IRQ12 whenever the output buffer is filled with mouse data.
Will send IRQ12 whenever the output buffer is filled with mouse data.
Will not send IRQ1 whenever the output buffer is filled with keyboard data.
Will send IRQ1 whenever the output buffer is filled with keyboard data.
PRELIMINARY
106
CY82C693UB
Default
0
0
0
0
0
0
0
0