Altera LCD Multimedia HSMC - Manual (Page 30)

Altera Corporation 2–22
August 2008 LCD Multimedia HSMC
Board Components and Interfaces
Tables 2–15 shows the pinout of RS232 Interface with HSMC connector.
Figure 2–12 shows the RS232 interface schematic.
Figure 2–12. RS232 Interface Schematic
PS/2 Interface
The LCD Multimedia HSMC includes a standard PS/2 interface and a
connector (J9) for a PS/2 keyboard or mouse. The PS/2 interface is a
standard interface that is described extensively elsewhere.
Implementation of a PS/2 interface can be done either in hardware on the
MAXII or FPGA or software in a Nios processor running on the FPGA.
Table 2–15. RS232 Interface Pinout with HSMC Connector
HSMC Connector MAX II RS232 Interface
Signal Name
Pin
No.
HSMC
Connector
Side Pin
Device
Side Pin
Signal Name Pin No. Description
HC_UART_RXD 115 G18 K4 UART_RXD U5-12 ( 1 ) UART Receiver
HC_UART_TXD 119 G16 J4 UART_TXD U5-11 ( 2 ) UART Transmitter
Notes:
(1) U5.12 connects to pin 3 on the RS-232 connector (J6) via U5.13.
(2) U5.11 connects to pin 2 on the RS-232 connector (J6) via U5.14.
UART_TXD
UART_RXD
UART_RXD
UART_TXD
VCC33
VCC33
RXD LEDR RXD LEDR
J8
RS232
J8
RS232
5
9
4
8
3
7
2
6
1
11 10
C30
1U
C30
1U
U5
ADM3202
U5
ADM3202
R1IN 13
R2IN 8
T1IN 11
T2IN
10
C+ 1
C1- 3
C2+ 4
C2- 5
V+ 2
V-
6
R1OUT 12
R2OUT 9
T1OUT 14
T2OUT
7
VCC 16
GND 15 C28 1U C28 1U
R76 330 R76 330
R75 330 R75 330
C27 1U C27 1U
TXD LEDG TXD LEDG
C29
1U
C29
1U