MEC1404 Datasheet, PDF (405/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
TABLE 29-5: EC-ONLY REGISTER SUMMARY
Offset
0h
0h
4h
8h
Register Name
PS2 Transmit Buffer Register
PS2 Receive Buffer Register
PS2 Control Register
PS2 Status Register
29.15.1 PS2 TRANSMIT BUFFER REGISTER
Offset ^00h
Bits
Description
Type
31:8 Reserved
R
7:0 TRANSMIT_DATA
W
Writes to this register start a transmission of the data in this register
to the peripheral.
29.15.2 PS2 RECEIVE BUFFER REGISTER
Default
-
0h
Reset
Event
-
nSYSR
ST
Offset ^00h
Bits
Description
Type
31:8 Reserved
R
7:0 RECEIVE_DATA
R
Data received from a peripheral are recorded in this register.
A transmission initiated by writing the PS2 Transmit Buffer Register
will not start until valid data in this register have been read and
RDATA_RDY has been cleared by hardware.
The Receive Buffer Register is initialized to FFh after a read or
after a Time-out has occurred.
Default
-
FFh
Reset
Event
-
nSYSR
ST
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DS00001956D-page 405