NXP Semiconductors QorIQ T1040 - Page 31

Each UART supports:
• Full-duplex operation
• Software-programmable baud generators
• Clear-to-send (CTS) and ready-to-send (RTS) modem control functions
• Software-selectable serial interface data format that includes:
• Data length
• Parity
• 1/1.5/2 stop bit
• Baud rate
• Overrun, parity, and framing error detection
The UART ports are routed to the RJ45 connectors, as shown in the figure below.
DVDD
T1040
7 PROC_UART1_CTS_N
7 PROC_UART1_RTS_N
7 PROC_UART1_TXD
7 PROC_UART1_RXD
7 PROC_UART2_CTS_N
7 PROC_UART2_RTS_N
7 PROC_UART2_TXD
7 PROC_UART2_RXD
U40
3V3
13
12
11
10
9
5
14
15
NC3
GND
7
6
8
4
3
2
1
16
VCCA
A1
OE_B
VCCB
B1
A2
A3
A4
B2
B3
B4
GND
NC2
NC1
TXBN0304RSV
UART1_TXD
UART1_RXD
UART1_RTS_N
UART1_CTS_N
C274
0.1uF
C271
0.1uF 1
3
4
5
11
12
10
9
U39
C1+
C1-
C2+
C2-
T1-IN
R1-OUT
T2-IN
R2-OUT
MAX3232
R2-IN
T2-OUT
R1-IN
T1-OUT
GND
V-
V+
VCC
RS-232 XCVR
3V3
16
2
6
15
14
13
7
8
R199
100
FB21
BLM188D601SN1
0.1uF
C275
R198
R197
R196
100
100
100
FB20
FB19
FB18
BLM188D601SN1
BLM188D601SN1
BLM188D601SN1
C273
C272
0.1uF
0.1uF
C276
100pF
RS232_TXD1
A1
J13A
RJ45_2X1
100pF
100pF
100pF
C277
C278
C279
RS232_RXD1
RS232_RTS1
RS232_CTS1
A2
A3
A4
A5
A6
A7
A8
17
18
19
DVDD
U42
3V3
13
12
11
10
9
5
14
15
NC3
GND
7
6
8
4
3
2
1
16
VCCA
A1
OE_B
VCCB
B1
A2
A3
A4
B2
B3
B4
GND
NC2
NC1
TXBN0304RSV
UART2_TXD
UART2_RXD
UART2_RTS_N
UART2_CTS_N
C284
0.1uF
C285
0.1uF 1
3
4
5
11
12
10
9
U41
C1+
C1-
C2+
C2-
T1-IN
R1-OUT
T2-IN
R2-OUT
MAX3232
R2-IN
T2-OUT
R1-IN
T1-OUT
GND
V-
V+
VCC
RS-232 XCVR
3V3
16
2
6
15
14
13
7
8
R203
100
FB25
BLM188D601SN1
0.1uF
C288
R202
R201
R200
100
100
100
FB24
FB23
FB22
BLM188D601SN1
BLM188D601SN1
BLM188D601SN1
C287
C286
0.1uF
0.1uF
C289
100pF
RS232_TXD2
B1
J13B
RJ45_2X1
100pF
100pF
100pF
C290
C291
C292
RS232_RXD2
RS232_RTS2
RS232_CTS2
B2
B3
B4
B5
B6
B7
B8
20
21
22
3V3
3V3
DVDD DVDD
C280
0.1uF
C281
0.1uF
C282
0.1uF
C283
0.1uF
Figure 2-15. UART connection
The table below shows the connection setting for the UART RJ45 and the DB9 female
cable (Part number: 600-76847-000).
Table 2-5. RJ45 and DB9 connection
RJ45 pin number RS-232 signal DB9 female pin number
1 RTS 8
2 N/C
3 TXD 2
4 GND
5 GND 5
6 RXD 3
7 N/C
8 CTS 7
Chapter 2 Architecture
QorIQ T1040 Reference Design Board User Guide, Rev. 0, 06/2015
Freescale Semiconductor, Inc. 31