Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
Table 9.14 Flash Low Address Register
MBX80h
0x7FB1
VCC1
HOST ADDRESS
8051 ADDRESS
POWER
0x00
DEFAULT
BIT
D7
D6
R/W
D5
R/W
D4
R/W
D3
R/W
D2
R/W
D1
R/W
D0
R/W
R/W
HOST TYPE
8051 R/W
BIT NAME
R/W
A7
R/W
A6
R/W
A5
R/W
A4
R/W
A3
R/W
A2
R/W
A1
R/W
A0
9.10.10 Flash Data Register
The Flash Data register contains either the LPC47N350 64k Embedded Flash data, CSI command-
codes, or the contents of the CSI Status register (Table 9.15). The LPC Host can access the Flash Data
register using the Mailbox Register Interface address 0x81. The 8051 can access the Flash Data
register using MMCR address 0x7FB2.
Note: To properly access the LPC47N350 64k Embedded Flash, the Flash High Address and the Flash
Low Address registers must be initialized before reading or writing the Flash Data register.
Table 9.15 Flash Data Register
MBX81h
0x7FB2
VCC1
HOST ADDRESS
8051 ADDRESS
POWER
0x00
DEFAULT
BIT
D7
D6
R/W
D5
R/W
D4
R/W
D3
R/W
D2
R/W
D1
R/W
D0
R/W
R/W
HOST TYPE
8051 R/W
BIT NAME
R/W
D7
R/W
D6
R/W
D5
R/W
D4
R/W
D3
R/W
D2
R/W
D1
R/W
D0
SMSC LPC47N350
125
Revision 1.1 (01-14-03)
DATASHEET
SMSC [ SMSC CORPORATION ]
