1 i2c address registers (i2adrn), 2 i2c frequency divider registers (i2fdrn), C address registers (i2adr n ) – Freescale Semiconductor ColdFire MCF52210 User Manual
Page 424: C frequency divider registers (i2fdr n ), The i2adr n hold the address the i, C clock for bit-rate selection
I
2
C Interface
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
25-4
Freescale Semiconductor
25.2.1
I
2
C Address Registers (I2ADRn)
The I2ADRn hold the address the I
2
C responds to when addressed as a slave. It is not the address sent on
the bus during the address transfer when the module is performing a master transfer.
25.2.2
I
2
C Frequency Divider Registers (I2FDRn)
The I2FDRn, shown in
, provide a programmable prescaler to configure the I
2
C clock for
bit-rate selection.
Table 25-1. I
2
C Module Memory Map
IPSBAR Offset
Register
Access
Reset Value
Section/Page
I
2
C0
I
2
C1
0x0300
0x0380
I
2
C Address Registers (I2ADRn)
R/W
0x00
0x0304
0x0384
I
2
C Frequency Divider Registers (I2FDRn)
R/W
0x00
0x0308
0x0388
I
2
C Control Registers (I2CRn)
R/W
0x00
0x030C
0x038C
I
2
C Status Registers (I2SRn)
R/W
0x81
0x0310
0x0390
I
2
C Data I/O Registers (I2DRn)
R/W
0x00
IPSBAR
Offset:
0x0300 (I2ADR0)
0x0380 (I2ADR1)
Access: User read/write
7
6
5
4
3
2
1
0
R
ADR
0
W
Reset:
0
0
0
0
0
0
0
0
Figure 25-2. I2ADRn Registers
Table 25-2. I2ADRn Field Descriptions
Field
Description
7–1
ADR
Slave address. Contains the specific slave address to be used by the I
2
C module. Slave mode is the default I
2
C mode
for an address match on the bus.
0
Reserved, must be cleared.