What is stored in timer register $1?$

The upper $16$ bits of the timeout value

The lower $32$ bits of the timeout value

The timeout bit in bit $0$

The upper $32$ bits of the timeout value

The timeout bit in bit $1$

The start bit in bit $1$ and the continue bit in bit $0$

The start bit in bit $2$ and the continue bit in bit $1$

The lower $16$ bits of the timeout value