pen=disabled, stop=one, eps=odd, dlab=rx_buffer, dls=five
UART Line Control Register
| dls | Data Length Select 0 (five): 5 bits 1 (six): 6 bits 2 (seven): 7 bits 3 (eight): 8 bits |
| stop | Number of stop bits 0 (one): 1 stop bit 1 (two): 1.5 stop bits when DLS(LCR[1:0]) is zero, else 2 stop bits |
| pen | Parity Enable 0 (disabled): undefined 1 (enabled): undefined |
| eps | Even Parity Select 0 (odd): undefined 1 (even): undefined 2 (rs485_data): undefined 3 (rs485_addr): undefined |
| bc | Break Control Bit |
| dlab | Divisor Latch Access Bit 0 (rx_buffer): undefined 1 (divisor_latch): undefined |