Shift Buffer Register; Prescaler Register - Samsung S3C2501X User Manual

2
I C CONTROLLER
6.5.2 SHIFT BUFFER REGISTER (IICBUF)
Register Address
IICBUF 0xF00F0004
Bit Number Bit Name
[7:0] Data
[31:8] Reserved
6.5.3 PRESCALER REGISTER (IICPS)
Register Address
IICPS 0xF00F0008
Bit Number Bit Name
[15:0] Prescaler value
[31:16] Reserved
6-10
Table 6-3. IICBUF Register
R/W
R/W

Shift buffer register

This data field acts as serial shift register and read buffer for interfacing to
2
the I C. All read and write operations to/from the I
register. The IICBUF register is a combination of a shift register and a data
buffer. 8-bit parallel data is always written to the shift register, and read form
2
the data buffer. I C data is always shifted in or out of the shift register.
Not applicable.
Table 6-4. IICPS Register
R/W
R/W

Prescaler register

This prescaler value is used to generate the serial I
clock is divided by (16 x (prescaler value + 1) + 3) to make the serial I
clock. If the prescaler value is zero, the system clock is when divided by 19
2
to make the serial I C clock. Therefore, when I
standard mode, the prescaler value must be changed.
Not applicable.
Description
Description
2
C are done via this
Description
Description
2
C clock. The system
2
C is used to 100kbit/s in the
S3C2501X
Rest Value
Undefined
Rest Value
0x00000000
2
C