SM320C6414-EP_16 Datasheet, PDF (58/93 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSORS

SM320C6414-EP, SM320C6415-EP, SM320C6416-EP
FIXED-POINT DIGITAL SIGNAL PROCESSORS
SGUS043D – MAY 2003 – REVISED SEPTEMBER 2008
www.ti.com
ECLKOUT1
CEx
ABE[7:0] or BBE[1:0]
AEA[22:3] or BEA[20:1]
AED[63:0] or BED[15:0]
Setup = 2
Strobe = 3
Not Ready
8
8
BE
8
Address
8
Write Data
Hold = 2
9
9
9
9
AOE/SDRAS/SOE^‡
ARE/SDCAS/SADS/SRE^‡
10
10
AWE/SDWE/SWE^‡
ARDY
7
6
7
6
NOTE: These C64xE devices have two EMIFs (EMIFA and EMIFB). All EMIFA signals are prefixed by an A and all EMIFB
signals are prefixed by a B. Throughout the rest of this document, in generic EMIF areas of discussion, the prefix A or
B may be omitted [e.g., the asynchronous memory access signals are shown as generic (AOE, ARE, and AWE)
instead of AAOE, AARE, and AAWE (for EMIFA) and BAOE, BARE, and BAWE (for EMIFB)].
A. AOE/SDRAS/SOE, ARE/SDCAS/SADS/SRE, and AWE/SDWE/SWE operate as AOE (identified under select signals),
ARE, and AWE, respectively, during asynchronous memory accesses.
Figure 5-12. Asynchronous Memory Write Timing for EMIFA and EMIFB (see NOTE ^(A))
5.3 PROGRAMMABLE SYNCHRONOUS INTERFACE TIMING
5.3.1 Timing Requirements for Programmable Synchronous Interface Cycles for EMIFA
Module ⁽¹⁾ (see Figure 5-13)
NO.
PARAMETER
–50xEP
MIN MAX
UNIT
6
t_{su(EDV-EKOxH)} Setup time, read EDx valid before ECLKOUTx high
7 t_h(EKOxH-EDV) Hold time, read EDx valid after ECLKOUTx high
3.1
ns
1.5
ns
(1) These C64x devices have two EMIFs (EMIFA and EMIFB). All EMIFA signals are prefixed by an A and all EMIFB signals are prefixed by
a B. Throughout the rest of this document, in generic EMIF areas of discussion, the prefix A or B may be omitted [e.g., the
programmable synchronous interface access signals are shown as generic (SADS/SRE, SOE, and SWE) instead of ASADS/ASRE,
ASOE, and ASWE (for EMIFA) and BSADS/BSRE, BSOE, and BSWE (for EMIFB)].
NO.
PARAMETER
1 t_d(EKOxH-CEV) Delay time, ECLKOUTx high to CEx valid
2 t_d(EKOxH-BEV) Delay time, ECLKOUTx high to BEx valid
3 t_{d(EKOxH-BEIV)} Delay time, ECLKOUTx high to BEx invalidE
4 t_d(EKOxH-EAV) Delay time, ECLKOUTx high to EAx valid
5 t_{d(EKOxH-EAIV)} Delay time, ECLKOUTx high to EAx invalid
–50xEP
MIN MAX
1.3
6.4
6.4
1.3
6.4
1.3
UNIT
ns
ns
ns
ns
ns
58
PARAMETER MEASUREMENT INFORMATION
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