MPC8536E-ANDROID Freescale Semiconductor, MPC8536E-ANDROID Datasheet - Page 712

• Manufacturer Part Number: MPC8536E-ANDROID
• Description: HARDWARE/SOFTWARE ANDROID OS
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536E-ANDROID

• Contents: Board
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Enhanced Local Bus Controller
13.4.3.3.3
Instructions CW0, CW1, RBW, and RSW force FCM to observe the state of the LFRB pin, which may be
driven low by a long-latency NAND Flash operation, such as a page read. Following the issue of such
commands, FCM waits as shown in
observing LFRB before it has been properly driven low by the device, but does not preclude LFRB from
remaining high after a command. In addition, FCM samples and compares the state of LFRB on two
consecutive cycles of LCLK to filter out noise on this signal as it rises to the ready state (LFRB = 1).
13.4.3.3.4
The timing for read data transfers is shown in
enable its output drivers and drive valid read data while LFRE is held low. FCM samples read data on the
rising edge of LFRE, which follows an optional number of wait states. Note that FCM will delay the first
read if a RBW or RSW instruction is issued, in which case LFRB sample timing takes effect (see
Section 13.4.3.3.3, “FCM Ready/Busy
13-70
LCLK
(unused)
LFCLE
LFALE
LFWE
LAD[0:7]
TA
LFCLE
LFWE
LFRB
LFRE
Figure 13-56. Example of FCM Command and Address Timing with Relaxed Parameters
FCM Ready/Busy Timing
FCM Read Data Timing
long-latency CW command issue
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
TRLX = 0:
TRLX = 1:
Figure 13-57. FCM Delay Prior to Sampling LFRB State
8×(2+SCY) cycles
16×(2+SCY) LCLK cycles
(for TRLX = 1, CHT = 0, CST = 1, SCY = 2)
2×SCY = 4 cycles
Figure 13-57
Timing”).
command
Figure
LFRB sample
points
before sampling the state of LFRB. This guards against
13-58. Upon assertion of LFRE, the Flash device will
NAND FlashFlash busy state
ready state
FCM continues
following LFRB high
Freescale Semiconductor
address