UART I/O Signals

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

The UART controller I/O signals are routed to both the PMC and LPD MIOs, and the EMIO. Each set of I/O signals can be located on one of six sections of pins as shown in MIO-at-a-Glance. The CTS_b and RTS_b signals are available on the MIO or EMIO. The UART flow control signals are available on EMIO.

Table 1. UART Controller I/O Signals
MIO EMIO
Signal Name I/O PMC MIO Pin LPD MIO Pin MIO-at-a-Glance Table Signal Name I/O

UART0_RXD
UART1_RXD

I MIO-at-a-Glance 1 0   I

UART0_TXD
UART1_TXD

O 1   O

UART0_CTS_b
UART1_CTS_b

I 2 CTS_b I

UART0_RTS_b
UART1_RTS_b

O 3 RTS_b O
Not available on MIO DCD_b O
DSR_b I
RI_b I
DTR_b I
SIRIN O
SIROUT_b I
  1. The RXD, TXD, CTS_b, and RTS_b signals are routed to the MIO as a group. The groups are shown in the MIO-at-a-Glance. Unused signals (e.g., CTS_b and RTS_b) do not need to be routed through the MIO.