MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 516

• 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
25.1.3.1 Interface and Signals
The module provides access to as many as 15 devices with a total of seven signals: QSPI_DOUT,
QSPI_DIN, QSPI_CLK, QSPI_CS0, QSPI_CS1, QSPI_CS2, and QSPI_CS3.
Peripheral chip-select signals, QSPI_CS[3:0], are used to select an external device as the source
or destination for serial data transfer. Signals are asserted at a logic level corresponding to the
value of the QSPI_CS[3:0] bits in the command RAM whenever a command in the queue is
executed. More than one chip-select signal can be asserted simultaneously.
Although QSPI_CS[3:0] will function as simple chip selects in most applications, up to 15 devices
can be selected by decoding them with an external 4-to-16 decoder.
25-2
Internal Bus
QSPI Data Output (QSPI_DOUT)
QSPI Data Input (QSPI_DIN)
Queue Control
Control Logic
Comparator
End Queue
Internal Bus
Clock (f
Table 25-1. QSPI Input and Output Signals and Functions
Counter
Control
Pointer
Pointer
Queue
Block
Status
Delay
Regs
Regs
Signal Name
sys/2
)
Figure 25-1. QSPI Block Diagram
Divide by 2
MCF5235 Reference Manual, Rev. 2
Address
Register
Done
4
QSPI
Logic
Array
4
Configurable
N/A
Hi-Z or Actively Driven
Command
Select
Chip
4
4
Baud Rate
Generator
80-Byte
QSPI
RAM
msb
8/16 Bit Shift Reg.
Rx/Tx Data Reg.
Serial data output from QSPI
Serial data input to QSPI
Function
lsb
4
Register
Freescale Semiconductor
QSPI
Data
QSPI_DIN
QSPI_DOUT
QSPI_CS[3:0]
QSPI_CLK