4.3.1. KBDCR [4] (+0x00)

This is a control register that provides direct access to the KCLK and KDATA outputs, and a bit to enable the interface. A write access to this location updates the control signals. A read returns the three values written. Table 4-2: KBDCR register details shows the bit details for the register.

Table 4.2. KBDCR register details

BitNameFunction
3ENA

Keyboard enable bit.

0 = disable

1 = enable

2N/AReserved - Reads as zero.
1FKD

Force KDATA pad LOW

1 = Force the pad LOW regardless of the state of the Keyboard FSM.

0FKC1 = Force KCLK pad LOW regardless of the state of the Keyboard FSM.
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