MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 530

• 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

Queued Serial Peripheral Interface (QSPI) Module
25.3.8 Programming Example
The following steps are necessary to set up the QSPI 12-bit data transfers and a QSPI_CLK of
4.688 MHz. The QSPI RAM is set up for a queue of 16 transfers. All four QSPI_CS signals are
used in this example.
25-16
1. Write the QMR with 0xB308 to set up 12-bit data words with the data shifted on the falling
2. Write QDLYR with the desired delays.
3. Write QIR with 0xD00F to enable write collision, abort bus errors, and clear any
4. Write QAR with 0x0020 to select the first command RAM entry.
clock edge, and a QSPI_CLK frequency of 4.688 MHz (assuming a 75-MHz internal bus
clock).
interrupts.
QS1: QSPI_CS to QSPI_CLK
QS2: QSPI_CLK to QSPI_DOUT VALID
QS3: QSPI_CLK to QSPI_DOUT HOLD
QS4: QSPI_DIN to QSPI_CLK SETUP
QS5: QSPI_DIN to QSPI_CLK HOLD
QSPI_CS[3:0]
QSPI_CLK
QSPI_DOUT
QSPI_DIN
1 T1 is defined as the clock period in ns.
QS1
QS2
QS3
MCF5235 Reference Manual, Rev. 2
Figure 25-11. QSPI Timing
10 ns
10 ns
0 ns
Min
1T1
QS4
20 ns
Max
QS5
Freescale Semiconductor