Chapter Seven : Serial over LAN Support
59
MCARD_DETECT_L = Logic Low
When the MegaRAC M300V card is present, the motherboard UART TXD and RXD signals are
routed to the MegaRAC M300V OPMA SoL pins. The X4 De-MUX direction is from Y to A.
X1
X2
X3
X4
X5
RS232 xlator
Connector
UART0
UART1
UART
BMC
CLI
Generator
ESC Snoop
BMC
Local Bus
Management
NIC
Ethernet
Super I/ O
Host System
Handshake Signals
UAR
T Handshake Signals
SoL / ESC Snoop
TxD, RxD
mCard
Present
B not used when
card installed
On-card TxD/ RxD
signal mux control
Handshake signal mux control
from mCard
Driven by UART and muxed to connector
TxD, RxD
TxD, RxD
Rx
A
B
Y
A
B
Y
A
B
Y
A
B
Y
A
B
Y
X1
X2
X3
UART0
UART1
BMC
CLI
Generator
E
SC Snoop
BMC
Local Bus
M
ana
g
emen
t
NI
C
SoL / ESC Snoop
T
x
D,
R
x
D
On-card TxD/ RxD
signal mux control
Rx
A
B
Y
A
B
Y
A
B
Y
Содержание MegaRAC M300V
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Страница 87: ...Index 81 ...