MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 576

• Manufacturer Part Number: MOD5234-100IR
• Description: MOD5234 10/100 ETHERNET MODULE
• Manufacturer: NetBurner Inc
• Type: Controllers & Processorsr

Specifications of MOD5234-100IR

• Interface: I²C, SPI, UART
• Voltage - Supply: 2.5V
• Mounting Type: Surface Mount
• Package / Case: Module
• Product: Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Format: -
• Baud Rates: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4483564

I
27.4.8 Handshaking and Clock Stretching
The clock synchronization mechanism can be used as a handshake in data transfers. Slave devices
can hold I2C_SCL low after completing one byte transfer. In such a case, the clock mechanism
halts the bus clock and forces the master clock into wait states until the slave releases I2C_SCL.
Slaves may also slow down the transfer bit rate. After the master has driven I2C_SCL low, the
slave can drive I2C_SCL low for the required period and then release it. If the slave I2C_SCL low
period is longer than the master I2C_SCL low period, the resulting I2C_SCL bus signal low period
is stretched.
27.5
Table 27-1
27.5.1 I
The I2ADR holds the address the I
address sent on the bus during the address transfer.
27-8
2
C Interface
Bits
7–1
0
IPSBAR Offset
Memory Map/Register Definition
0x030C
2
lists the configuration registers used in the I
0x0300
0x0304
0x0308
0x0310
C Address Register (I2ADR)
Name
ADR
Address
—
Reset
W
R
Mnemonic
Slave address. Contains the specific slave address to be used by the I
mode is the default I
Reserved, should be cleared.
I2ADR
I2FDR
Figure 27-9. I
I2CR
I2DR
I2SR
0
7
Table 27-1. I
Table 27-2. I2ADR Field Descriptions
MCF5235 Reference Manual, Rev. 2
0
2
6
C responds to when addressed as a slave. Note that it is not the
2
I
2
2
C Address Register (I2ADR)
0
C mode for an address match on the bus.
5
2
C Frequency Divider Register
C Interface Memory Map
IPSBAR + 0x00_0300
I
I
I
2
2
I
2
C Data I/O Register
C Address Register
2
C Control Register
C Status Register
ADR
0
4
[31:24]
Description
2
0
3
C interface.
2
0
0
1
Reserved
Reserved
Reserved
Reserved
Reserved
[23:0]
0
0
0
Freescale Semiconductor
2
C module. Slave
Access
R/W
R/W
R/W
R/W
R/W