DSP56857 datasheet(39/53 Pages) FREESCALE

Part #	DSP56857

Description	16-bit Digital Signal Controllers

PDF	53 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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39 / 53 page

Enhanced Synchronous Serial Interface (ESSI) Timing

56857 Technical Data, Rev. 6

Freescale Semiconductor

Figure 4-26 Master Mode Timing Diagram

Table 4-12 ESSI Slave Mode1 Switching Characteristics

Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz

Parameter

Symbol

Min

Typ

Max

Units

SCK frequency

—

152

MHz

SCK period3

tSCKW

66.7

—

SCK high time

tSCKH

33.44

——

SCK low time

tSCKL

33.44

——

Output clock rise/fall time

—

Delay from SCK high to SC2 (bl) high - Slave5

tTFSBHS

-1

—

Delay from SCK high to SC2 (wl) high - Slave5

tTFSWHS

-1

—

tTHM

tTSM

tHM

tSM

tRFSWLM

tRFSWHM

tRFBLM

tRFSBHM

tTXHIM

tTXNVM

tTXVM

tTXEM

tTFSWLM

tTFSWHM

tTFSBLM

tTFSBHM

tSCKL

tSCKW

tSCKH

First Bit

Last Bit

SCK output

SC2 (bl) output

SC2 (wl) output

STD

SC0 output

SC1 (bl) output

SC1 (wl) output

SRD

DSP56857 Datasheet(PDF) 39 Page - Freescale Semiconductor, Inc

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