MCF5253 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MCF5253

ColdFire® Microprocessor Data Sheet

Freescale Semiconductor 

Electrical Specifications

BCLK

D1

data (write)

D2

BCLKE, SDXDQM, SDWE,

SDCS0, SDRAS, SDCAS

D3

A[24:9]

D4

data (read)

D5

Figure 3. SDRAM Bus Timing Diagram

Table 11. SDRAM Bus Timing Parameters

Timing to 50% Points

Maximum

ID

Characteristic

Units

30 pF 40 pF 50 pF

Load Load Load

D1 Propagation delay BCLK rising to data valid

7.88 8.8

9.6

ns

D2 Propagation delay BCLK rising to BCLKE, SDLDQM, 8.7

–

SDUDQM, SDWE, SDCS0, SDRAS, SDCAS valid

–

ns

D3 Propagation delay BCLK rising to A[24:9] valid

8.3 9.2

–

ns

D4 Set-up time data valid to BCLK rising

0

0

0

ns

D5 Hold time BCLK rising to data valid

0.7 0.7

0.7

ns

4.2 SPDIF Timing

The Sony/Philips Digital Interface (SPDIF) timing parameters are provided in Table 12. SPDIF timing is

totally asynchronous, therefore there is no need for relationship with the clock. Table 12 shows the

differences between high-low and low-high propagation delay which is called the skew.

MCF5253 ColdFire Processor Data Sheet: Technical Data, Rev. 2

Freescale Semiconductor

15

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