IDT72V70180PFG8 IDT, Integrated Device Technology Inc, IDT72V70180PFG8 Datasheet
IDT72V70180PFG8
Specifications of IDT72V70180PFG8
Available stocks
Related parts for IDT72V70180PFG8
IDT72V70180PFG8 Summary of contents
Page 1
FEATURES: • 128 x 128 channel non-blocking switching at 2.048 Mb/s • Per-channel variable or constant throughput delay • ® Automatic identification of ST-BUS • Accepts 4 serial data streams of 2.048 Mb/s • Automatic frame offset delay measurement • ...
Page 2
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 PIN CONFIGURATIONS PIN 1 GND 1 RX0 2 3 RX1 RX2 4 RX3 F0i GND 12 13 CLK ...
Page 3
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 PIN DESCRIPTION SYMBOL NAME I/O GND Ground. Vcc Vcc TX0-3 TX Output (Three-state Outputs) RX0-3 RX Input F0i Frame Pulse I FE ...
Page 4
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 FUNCTIONAL DESCRIPTION The IDT72V70180 is capable of switching 128 x 128, 64 Kbit/s PCM Kbit/s channel data. The device maintains frame integrity in data applications and ...
Page 5
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 In ST-BUS ® mode, the falling edge of the frame measurement signal (FE) is evaluated against the falling edge of the ST-BUS the rising edge evaluated against ...
Page 6
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 CONNECTION MEMORY CONTROL If the ODE pin or the OSB bit is high, the OE bit of each connection memory location controls the output drivers-enables (if high) or disables (if ...
Page 7
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 TABLE 1 — VARIABLE THROUGHPUT DELAY VALUE Delay for Variable Throughput Delay Mode Input Rate (m – output channel number) (n – input channel number) m < ...
Page 8
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 TABLE 5 — CONTROL REGISTER (CR) BITS Read/Write Address Reset Value: 0000 . Bit Name 15-6 ...
Page 9
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 TABLE 7 — FRAME ALIGNMENT REGISTER (FAR) BITS Read/Write Address Reset Value: 0000 . CFE FD11 FD10 Bit ...
Page 10
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 TABLE 8 — FRAME INPUT OFFSET REGISTER (FOR) BITS Read/Write Address Reset Value: 0000 . OF32 OF31 OF30 DLE3 OF22 (1) ...
Page 11
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 TABLE 9 — OFFSET BITS (OFn2, OFn1, OFn0, DLEn) & FRAME DELAY BITS (FD11, FD2-0) Input Stream Offset No clock period shift (Default) + 0.5 clock period shift + 1.0 ...
Page 12
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 TABLE 10 — CONNECTION MEMORY BITS V/C LPBK PC CCO OE Bit Name 15 LPBK (Per Channel Loopback) V/C 14 (Variable/Constant Throughput Delay ...
Page 13
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage CC Vi Voltage on Digital Inputs GND -0.3 I Current at Digital Outputs O T Storage Temperature S P Package Power Dissapation ...
Page 14
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 AC ELECTRICAL CHARACTERISTICS - FRAME PULSE AND CLK Symbol Characteristics ® t Frame Pulse Width (ST-BUS FPW t Frame Pulse Setup time before CLK falling (ST-BUS FPS t Frame Pulse ...
Page 15
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 t FPW F0i t FPS CLK (1) TX Bit 0, Last Ch RX (1) Bit 0, Last Ch NOTE: 1. last channel = ch 31. t FPW F0i t FPS ...
Page 16
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 AC ELECTRICAL CHARACTERISTICS - MULTIPLEXED BUS TIMING (INTEL) Symbol Parameter t ALE Pulse Width ALW t Address Setup from ALE falling ADS t Address Hold from ALE falling ADH RD ...
Page 17
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 AC ELECTRICAL CHARACTERISTICS - MULTIPLEXED BUS TIMING (MOTOROLA) Symbol Parameter t ALE Pulse Width ASW t Address Setup from AS falling ADS t Address Hold from AS falling ADH Data ...
Page 18
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 AC ELECTRICAL CHARACTERISTICS-MOTOROLA NON-MULTIPLEXED BUS MODE Symbol Parameter t CS Setup from DS falling CSS t R/W Setup from DS falling RWS t Address Setup from DS falling ADS t ...
Page 19
IDT72V70180 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128 CLK GCI CLK ST-BUS t DSS DS t CSS CS t RWS R/W t ADS A0-A7 AD0-AD7/ D8-D15 DTA t DSS t DSPW t t CSS CSH t t ...
Page 20
ORDERING INFORMATION IDT XXXXXX XX Device Type Package DATASHEET DOCUMENT HISTORY 5/02/2000 pg.1 1/04/2001 pgs 10, 13, 15, 16, 17, 18 and 19. 1/25/2001 pgs. 13 and 18. 08/06/2001 pg. 1 03/24/2003 pg. 1 CORPORATE HEADQUARTER 2975 ...