Freescale Semiconductor MCF52211 Manual Do Utilizador

25-4

Freescale Semiconductor

 

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.

C Frequency Divider Registers (I2FDRn)

The I2FDRn, shown in 

, provide a programmable prescaler to configure the I

2

C clock for 

bit-rate selection.

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

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.