IDT72510L35J Integrated Device Technology, Inc., IDT72510L35J Datasheet

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IDT72510L35J

Manufacturer Part Number
IDT72510L35J
Description
Bus-matching bidirectional FIFO 512 x 18-bit - 1024 x 9-bit 1024 x 18-bit - 2048 x 9-bit
Manufacturer
Integrated Device Technology, Inc.
Datasheet

Specifications of IDT72510L35J

Case
PLCC52
Dc
95+

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IDT72510L35J
Manufacturer:
SIL
Quantity:
23
Part Number:
IDT72510L35J
Manufacturer:
IDT
Quantity:
95
FEATURES:
• Two side-by-side FIFO memory arrays for bidirectional
• 512 x 18-Bit – 1024 x 9-Bit (IDT72510)
• 1024 x 18-Bit – 2048 x 9-Bit (IDT72520)
• 18-bit data bus on Port A side and 9-bit data bus on Port
• Can be configured for 18-to-9-bit, 36-to-9-bit, or 36-to-18-
• Fast 25ns access time
• Fully programmable standard microprocessor interface
• Built-in bypass path for direct data transfer between two
• Two fixed flags, Empty and Full, for both the A-to-B and
• Two programmable flags, Almost-Empty and Almost-Full
• Programmable flag offset can be set to any depth in the
• Any of the eight internal flags can be assigned to four
• Flexible reread/rewrite capabilities.
• On-chip parity checking and generation
• Standard DMA control pins for data exchange with
• IDT72510 and IDT72520 available in the the 52-pin PLCC
SIMPLIFIED BLOCK DIAGRAM
COMMERCIAL TEMPERATURE RANGE
For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391.
The IDT logo is a registered trademark of Integrated Device Techology, Inc.
1996 Integrated Device Technology, Inc.
data transfers
B side
bit communication
ports
the B-to-A FIFO
for each FIFO
FIFO
external flag pins
peripherals
package
Integrated Device Technology, Inc.
Control
Port
Flags
A
Data
18-bits
Processor
BUS-MATCHING
BIDIRECTIONAL FIFO
512 x 18-BIT – 1024 x 9-BIT
1024 x 18-BIT – 2048 x 9-BIT
Interface
Programmable
A
Flag Logic
Bypass Path
Registers
18-Bit
18-Bit
FIFO
FIFO
5.31
DESCRIPTION:
in, first-out memories that enhance processor-to-processor
and processor-to-peripheral communications. IDT BiFIFOs
integrate two side-by-side memory arrays for data transfers
in two directions.
standard microprocessor interfaces. All BiFIFO operations
are controlled from the 18-bit wide Port A. The BiFIFOs
incorporate bus matching logic to convert the 18-bit wide
memory data paths to the 9-bit wide Port B data bus. The
BiFIFOs have a bypass path that allows the device con-
nected to Port A to pass messages directly to the Port B
device.
Command Register, a Status Register, and eight Configuration
Registers.
memory array has four internal flags, Empty, Almost-Empty,
Almost-Full and Full, for a total of eight internal flags. The
Almost-Empty and Almost-Full flag offsets can be set to any
depth through the Configuration Registers. These eight inter-
nal flags can be assigned to any of four external flag pins
(FLG
ity generation and checking can be done by the BiFIFO on
data passing through Port B. The Reread and Rewrite con-
The BiFIFOs have two ports, A and B, that both have
Ten registers are accessible through Port A, a
The IDT BiFIFOs have programmable flags. Each FIFO
Port B has parity, reread/rewrite and DMA functions. Par-
The IDT72510 and IDT72520 are highly integrated first-
A
-FLG
Handshake
Interface
D
Processor
Interface
) through one Configuration Register.
9-bits
B
9-bits
2669 drw 01
Data
Port
Control
DMA
B
DECEMBER 1995
IDT72510
IDT72520
DSC-2669/-
1

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IDT72510L35J Summary of contents

Page 1

... A Control Flags The IDT logo is a registered trademark of Integrated Device Techology, Inc. COMMERCIAL TEMPERATURE RANGE 1996 Integrated Device Technology, Inc. For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391. BUS-MATCHING BIDIRECTIONAL FIFO 512 x 18-BIT – 1024 x 9-BIT 1024 x 18-BIT – 2048 x 9-BIT ...

Page 2

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO trols will read or write Port B data blocks multiple times. The BiFIFOs have three pins, REQ, ACK and CLK, to control DMA transfers from Port B devices. PIN CONFIGURATION INDEX D A10 D ...

Page 3

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO PIN DESCRIPTIONS Symbol Name DA0-DA15 Data A DA16-DA17 Parity Chip Select Data Strobe Read/Write A A0, A1 Addresses DB0-DB7 Data B DB8 Parity B ...

Page 4

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO PIN DESCRIPTIONS Symbol Name ACK Acknowledge CLK Clock FLGA-FLGD Flags RS Reset VCC Power GND Ground I/O O When Port B is programmed in peripheral mode, Acknowledge is asserted in response to a Request ...

Page 5

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO DETAILED BLOCK DIAGRAM MUX Check Generate/ Parity Check Generate/ Parity MUX Register Byte Odd 5.31 COMMERCIAL TEMPERATURE RANGE 2669 drw 03 5 ...

Page 6

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO FUNCTIONAL DESCRIPTION IDT’s BiFIFO family is versatile for both multiprocessor and peripheral applications. Data can be sent through both FIFO memories concurrently, thus freeing both processors from laborious direct memory access (DMA) protocols and ...

Page 7

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO 36-BIT PROCESSOR to 18-BIT PERIPHERAL CONFIGURATION Processor Address Control Data RAM NOTE: 1. Upper BiFIFO only is used in 18- to 9-bit configuration. Note that Cntl A refers to W and . B talk ...

Page 8

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO alone configuration BiFIFOs connected to a peripheral 36- to 9-bit configuration, the master device controls the bus. The Port B interface pins of the master device are outputs and the interface pins ...

Page 9

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO 36-BIT PROCESSOR to 9-BIT PERIPHERAL CONFIGURATION Processor Address Control Data RAM NOTE Cntl A refers and IDT BiFIFO (Master) Cntl ...

Page 10

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO PORT A RESOURCES Read FIFO 9-bit Bypass Path Configuration Registers Status Register 1 ...

Page 11

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO RESET COMMAND FUNCTIONS Reset Function Operands 000 No Operation 001 Reset B A FIFO (Read, Write, and Rewrite Pointers = 0) 010 Reset A B FIFO (Read, Write, and Reread Pointers = 0) 011 ...

Page 12

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO Status Register The Status Register reports the state of the programmable flags, the DMA read/write direction, the Odd Byte Register valid bit, and parity errors. The Status Register is read by CS setting = ...

Page 13

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO CONFIGURATION REGISTER FORMATS 15 Config. Reg Config. Reg Config. Reg Config. Reg Config. Reg. ...

Page 14

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO Port B Interface Port B also has parity, reread/rewrite and DMA functions. Port B can be configured to interface to either Intel-style ( Motorola-style ( , R/ ) devices ...

Page 15

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO CONFIGURATION REGISTER 7 FORMAT BIT FUNCTION 0-7 Unused 8 Parity Input Control Parity Output Control Parity Odd/Even Control 11 Assign Parity Error to Flag A Pin 12-15 Unused ...

Page 16

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO two parity error bits is brought out to FLG of Configuration Register 7. Parity generation creates the ninth bit. This ninth bit is placed on D for A->B read operation, and ...

Page 17

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO ABSOLUTE MAXIMUM RATINGS Symbol Rating Commercial V Terminal –0.5 to +7.0 TERM Voltage with Respect to Ground T Operating A Temperature T Temperature –55 to +125 BIAS Under Bias T Storage –55 to +125 ...

Page 18

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO AC ELECTRICAL CHARACTERISTICS (Commercial 10 + Symbol Parameter RESET TIMING (Port A and Port B) t Reset cycle time RSC t Reset pulse ...

Page 19

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO AC ELECTRICAL CHARACTERISTICS (Commercial 10 + Symbol Parameter PORT B PROCESSOR INTERFACE TIMING tb Port B access time with A1 no parity tb ...

Page 20

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO AC ELECTRICAL CHARACTERISTICS (Commercial 10 + Symbol Parameter PORT B RETRANSMIT and PARITY TIMING RER REW LDRER, DSBH LDREW set-up ...

Page 21

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO ( RER , REW LDRER LDREW REQ DS A FLG , A FLG C FLG B, FLG D t RSC t ...

Page 22

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO Figure 10. Basic Port A Control Signal Timing (Applies to All Port A Timing Opcode D D ...

Page 23

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO WRITE Input A17 READ Output A17 WPW ta WR ...

Page 24

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO WRITE Input D – DS1 or NOTES: 1. tbDS1 and tbDH1 are with parity checking or if parity is ignored, ...

Page 25

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO AÆB FIFO WRITE FLOW-THROUGH –D A0 A17 A B (1) Full Flag ( – NOTES: 1. Assume the flag pin is ...

Page 26

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO BÆA FIFO WRITE FLOW-THROUGH –D A0 A17 (1) Full Flag – NOTES: 1. Assume the flag pin ...

Page 27

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO BÆA READ BYPASS –D A0 A7, D A16 R DS ( BYD W ( BYD D –D ...

Page 28

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO SINGLE WORD DMA TRANSFER t t CKH CLK REQ t REQS ACK WRITE Output B17 READ W ( ...

Page 29

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO RER , REW LDRER, LDREW Figure 18. Port B Reread and Rewrite Timing for Intelligent Retransmit SET PARITY ERROR: FLGA IS ...

Page 30

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO DS A Write ( Empty Flag B A Almost- Empty Flag Figure 20. Empty and Almost-Empty Flag Timing for BÆA ...

Page 31

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO Write ( Empty Flag A B Almost-Empty Flag Figure 22. Empty and Almost-Empty Flag Timing for AÆB FIFO ...

Page 32

IDT72510, IDT72520 BUS MATCHING BIDIRECTIONAL FIFO ORDERING INFORMATION XXXXX L IDT Device Power Type XX J Speed Package Process/ Temperature Range 5.31 COMMERCIAL TEMPERATURE RANGE Blank Commercial ( + Plastic Leaded Chip Carrier 25 Commerical Only ...

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