vsc055xkm-01 Maxim Integrated Products, Inc., vsc055xkm-01 Datasheet - Page 102
vsc055xkm-01
Manufacturer Part Number
vsc055xkm-01
Description
Enhanced I?c Backplane Controller
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.VSC055XKM-01.pdf
(133 pages)
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3.2.90 E9h: Master Interface Port Select (MIPS)
3.2.91 EAh: Master Interface Data (MID)
Revision 4.1
January 2008
The following table shows the bit assignments for the Master Interface Port Select register.
The following table shows the bit assignments for the Master Interface Data register.
Register Name:
Address:
Reset Value:
Bit
7
6:5
4:2
1:0
Register Name:
Address:
Reset Value:
Bit
7:0
Bit Label
MIPE
RES
PS2-0
BS1-0
Bit Label
MD7-0
MIPS
E9h
0X00_0000b
MID
EAh
0000_0000b
Access
R/W
R
R/W
R/W
Access
R/W
Description
Master Interface Port Enable
This bit enables the Master Interface on to the selected set of GPIO pins based
on the port select and bit select bits.
Setting this bit enables the interface allowing the Master Interface to transfer
data over the selected GPIO pins based on register control.
Clearing this bit disables the interface and returns control of the GPIO pins to
other functions within this device.
After a reset or power on, this bit is cleared.
Reserved.
These three bits determine the port selected for Master mode two-wire serial
transfers. Valid ports for the VSC055-01 include Port 4 (4h), Port 5 (5h), Port 6
(6h), and Port 7 (7h). Values other than those specified do not enable the
interface.
After a reset or power on, these bits are cleared.
Master Interface Bit Select
These two bits determine the bits within a port selected for master mode two-
wire serial transfers.
00b: enables the SDA function on bit 0 and the SCL function on bit 1 of the port.
01b: enables the SDA function on bit 2 and the SCL function on bit 3 of the port.
10b: enables the SDA function on bit 4 and the SCL function on bit 5 of the port.
11b: enables the SDA function on bit 6 and the SCL function on bit 7 of the port.
After a reset or power on, these bits are cleared.
Description
Master Interface Data
These eight bits store data to be used for serial write operations or received
from serial read operations.
After a reset or power on, these bits are cleared.
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VSC055-01
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