MSC C6-MB-EVA
- PRELIMINARY -
User Manual
50 / 63
4.23.1
SIO Configuration
The SIO strap options can be changed via DIP switches S2902 and S2905.
Switch
Signal name
ON
OFF
S2902 #1
48MHz_EN
Enable 48MHz (default) Enable 24MHz
S2902 #2
PNP_ADR
Reset FDC UARTs LPT
setting
No reset FDC UARTs
LPT setting
S2902 #3
4EH_ENA
SIO address 4EH
(default)
SIO address 2EH
S2902 #4
KBD_EN
Enable KBC
Disable KBC
S2905 #1
SIO_RST_N
Enable SIO
Disable SIO
Table 31 SIO Configuration
4.23.2
Parallel Port
Specification:
References:
X2304
Connector:26 pin IDC-M
Pin-out:
Refer to Table 32
Pin
Signal name
Signal name
Pin
1
STB#
AFD#
2
3
PD0
ERR#
4
5
PD1
INIT#
6
7
PD2
SLIN#
8
9
PD3
GND
10
11
PD4
GND
12
13
PD5
GND
14
15
PD6
GND
16
17
PD7
GND
18
19
ACK#
GND
20
21
BUSY
GND
22
23
PE
GND
24
25
SLCT
VCC n.c.
26
Table 32 Pin-out LPT Port
4.23.3
COM Ports COM1 COM2
Characteristics of the COM ports:
RS232 standard
RS232 transceiver ESD pro/- 15kV
EMC improved by using EMI filters in the signal lines
Specification:
References:
X2301 (COM1), X2302 (COM2)
Connector:10 pin IDC-M
Pin-out:
Refer to Table 33 Pin-out COM Ports