MPC8536-RDK Freescale Semiconductor, MPC8536-RDK Datasheet - Page 707

Manufacturer Part Number

BOARD REF COMEXPRESS MPC8536

Manufacturer

Freescale Semiconductor

PowerQUICC ™r

CSB1880, CSB1801, Cables, Documentation, Enclosure, Power Supply with cord

For Use With/related Products

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

FCM has a fully general command and data transfer sequencer that caters for both common and

specific/proprietary NAND Flash command sequences. The command sequencer reads a program out of

the FIR register, which can hold up to 8 instructions, each represented by a 4-bit op-code, as illustrated in

likewise to subsequent instructions, ending at FIR[OP7] or until the only instructions remaining are NOPs.

If FIR contains nothing but NOP instructions, FCM will not assert LCSn, otherwise, LCSn is asserted prior

to the first instruction and remains asserted until the last instruction has completed. If LTESR[CC] is

enabled, completion of the last instruction will trigger a command completion event interrupt from eLBC.

Prior to executing a sequence, necessary operands for the instructions will need to be set in the FMR, FCR,

MDR, FBCR, FBAR, and FPAR registers. The AS0–AS3 address and data pointers associated with FCM’s

use of MDR all reset to select AS0 at the start of the instruction sequence. A complete list of op-codes can

Freescale Semiconductor

13-53. The first instruction executed is read from FIR[OP0], the next is read from FIR[OP1], and

Figure 13-52. ECC Placement in NAND Flash Spare Regions in Relation to FMR[ECCM]

Section 13.3.1.18, “Flash Instruction Register (FIR).”

FBAR Register

FBCR Register

FPAR Register

Programming FCM

MDR Register

FMR Register

FCR Register

MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1

MDR AS select

Byte 511 Other Mains Spare 0

Figure 13-53. FCM Instruction Sequencer Mechanism

FCM Instruction

Flash instruction shift register

FIR Register

parallel load on FCM bank select

Enhanced Local Bus Controller