MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 79

• 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

3.2.1.2
These registers can be used as software stack pointers, index registers, or base address registers;
they can also be used for word and longword operations.
3.2.1.3
Certain ColdFire implementations, including the MCF5235, support two unique stack pointer
(A7) registers—the supervisor stack pointer (SSP) and the user stack pointer (USP). This support
provides the required isolation between operating modes of the processor. The SSP is described in
Section 3.2.3.2, “Supervisor/User Stack Pointers (A7 and
A subroutine call saves the PC on the stack and the return restores it from the stack. Both the PC
and the SR are saved on the supervisor stack during the processing of exceptions and interrupts.
The return from exception (RTE) instruction restores the SR and PC values from the supervisor
stack.
3.2.1.4
The PC contains the address of the currently executing instruction. During instruction execution
and exception processing, the processor automatically increments the contents of the PC or places
a new value in the PC, as appropriate. For some addressing modes, the PC is used as a base address
for PC-relative operand addressing.
Freescale Semiconductor
Address Registers (A0–A6)
Stack Pointer (A7)
Program Counter (PC)
31
Figure 3-2. User Programming Model
MCF5235 Reference Manual, Rev. 2
15
15
7
7
0
0
OTHER_A7).”
CCR
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
PC
Data
Registers
Address
registers
USERStack
Pointer
Program
Counter
ConditionCode
Register
Processor Register Description
3-3