Техническая Спецификация для Intel Xeon Wolfdale E3210 P4X-UPE3210-316-6M1333

210

Datasheet

B/D/F/Type:

0/3/3/KT MM/IO

Address Offset: 4h

Default Value:

00h

Access:

RO, RW 

Size:

8 bits

The Modem Control Register controls the interface with the modem. Since the FW 

emulates the modem, the Host communicates to the FW via this register. Register has 

impact on hardware when the Loopback mode is on.

Reset: Host system Reset or D3->D0 transition.

7:5

RO

000b

Reserved 

4

RW

0b

Loop Back Mode (LBM): When set by Host, this bit indicates that the serial 
port is in loop Back mode. This means that the data that is transmitted by the 
host should be received. Helps in debug of the interface.

3

RW

0b

Output 2 (OUT2): This bit has no affect on hardware in normal mode. In loop 
back mode the value of this bit is written by hardware to Modem Status Register 
bit 7.

2

RW

0b

Output 1 (OUT1): This bit has no affect on hardware in normal mode. In loop 
back mode the value of this bit is written by hardware to Modem Status Register 
bit 6.

1

RW

0b

Request to Send Out (RTSO): This bit has no affect on hardware in normal 
mode. In loopback mode, the value of this bit is written by hardware to Modem 
Status Register bit 4.

0

RW

0b

Data Terminal Ready Out (DRTO): This bit has no affect on hardware in 
normal mode. In loopback mode, the value in this bit is written by hardware to 
Modem Status Register Bit 5.