Preliminary
S3C2451X RISC MICROPROCESSOR
IIC-BUS INTERFACE
18-13
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
MULTI-MASTER IIC-BUS ADDRESS (IICADD) REGISTER
Register Address
R/W
Description
Reset
Value
IICADD0
0x54000008
R/W
IIC0-Bus address register
0xXX
IICADD1
0x54000108
R/W
IIC1-Bus address register
0xXX
IICADD0
IICADD1
Bit Description Initial
State
Slave address
[7:0]
7-bit slave address, latched from the IIC-bus.
When serial output enable = 0 in the IICSTAT, IICADD is write-
enabled. The IICADD value can be read any time, regardless of the
current serial output enable bit (IICSTAT) setting.
Slave address : [7:1]
Not mapped : [0]
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MULTI-MASTER IIC-BUS TRANSMIT/RECEIVE DATA SHIFT (IICDS) REGISTER
Register Address
R/W
Description
Reset
Value
IICDS0 0x5400000C
R/W
IIC0-Bus
transmit/receive data shift register
0xXX
IICDS1 0x5400010C
R/W
IIC1-Bus
transmit/receive data shift register
0xXX
IICDS0
IICDS1
Bit Description Initial
State
Data shift
[7:0]
8-bit data shift register for IIC-bus Tx/Rx operation.
When serial output enable = 1 in the IICSTAT, IICDS is write-
enabled. The IICDS value can be read any time, regardless of the
current serial output enable bit (IICSTAT) setting.
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