ADZS-21262-1-EZEXT Analog Devices Inc, ADZS-21262-1-EZEXT Datasheet - Page 25

• Manufacturer Part Number: ADZS-21262-1-EZEXT
• Description: BOARD DAUGHTER FOR ADSP-21262
• Manufacturer: Analog Devices Inc

Specifications of ADZS-21262-1-EZEXT

• Accessory Type: DSP
• Silicon Manufacturer: Analog Devices
• Core Architecture: SHARC
• Features: Expansion Interface, High Speed Converter (HSC) Interface
• Kit Contents: Board Docs
• Silicon Family Name: SHARC
• Silicon Core Number: ADSP-21262
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ADSP-21262
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Table 21. 16-Bit Memory Read Cycle
1
2
Parameter
Timing Requirements
t
t
Switching Characteristics
t
t
t
t
t
t
t
t
t
D = (The value set by the PPDUR Bits (5–1) in the PPCTL register) × t
H = t
F = 7 × t
On reset, ALE is an active high cycle. However, it can be configured by software to be active low.
This parameter is only available when in EMPP = 0 mode.
DRS
DRH
ALEW
ADAS
ALERW
RRH
RWALE
RDDRV
ADAH
ALEHZ1
RW
2
PCLK
1
1
PCLK
(if a hold cycle is specified, else H = 0)
(if FLASH_MODE is set, else F = 0)
AD15–0 Data Setup Before RD High
AD15–0 Data Hold After RD High
ALE Pulse Width
AD15–0 Address Setup Before ALE Deasserted
ALE Deasserted to Read Asserted
Delay Between RD Rising Edge to Next Falling
Edge
Read Deasserted to ALE Asserted
ALE Address Drive After Read High
AD15–0 Address Hold After ALE Deasserted
ALE Deasserted to Address/Data15–0 in High-Z t
RD Pulse Width
AD15–0
ALE
WR
RD
NOTE: FOR 16-BIT MEMORY READS, WHEN EMPP
ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
WHEN EMPP = 0, MULTIPLE RD PULSES OCCUR BETWEEN ALE CYCLES. FOR COMPLETE INFORMATION,
SEE THE ADSP-2136x SHARC PROCESSOR HARDWARE REFERENCE.
t
t
ALEW
ADAS
VALID ADDRESS
t
Figure 18. Read Cycle for 16-Bit Memory Timing
ADAH
t
ALEHZ
t
ALERW
Rev. G | Page 25 of 56 | March 2011
t
t
0, ONLY ONE RD PULSE OCCURS BETWEEN ALE CYCLES.
RW
VALID DATA
Min
3.3
0
2 × t
t
2 × t
H + t
F + H + 0.5
F + H + t
t
D – 2.0
DRS
PCLK
PCLK
PCLK
PCLK
PCLK
PCLK
PCLK
– 2.5
– 2.3
t
DRH
K and B Grade
PCLK
– 2.0
– 3.8
– 1.4
t
RRH
– 2.3
VALID DATA
Max
t
PCLK
+ 3.0 t
t
RWALE
t
RDDRV
Min
4.5
0
2 × t
t
2 × t
H + t
F + H + 0.5
F + H + t
t
D – 2.0
PCLK
PCLK
PCLK
PCLK
PCLK
PCLK
– 2.5
– 2.3
PCLK
– 2.0
– 3.8
– 1.4
ADDRESS
VALID
Y Grade
– 2.3
Max
t
PCLK
+ 3.8
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns