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IDT72T40108 Datasheet(PDF) 5 Page - Integrated Device Technology |
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IDT72T40108 Datasheet(HTML) 5 Page - Integrated Device Technology |
5 / 52 page 5 COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES IDT72T4088/98/108/118 2.5V HIGH-SPEED TeraSync™ DDR/SDR FIFO 40-BIT CONFIGURATION 16,384 x 40, 32,768 x 40, 65,536 x 40 and 131,072 x 40 BM I W OW Write Port Width Read Port Width L L L x40 x40 H L L x40 x20 H L H x40 x10 H H L x20 x40 H H H x10 x40 TABLE 1 — BUS-MATCHING CONFIGURATION MODES NOTE: 1. Pin status during Master Reset. Figure 1. Single Device Configuration Signal Flow Diagram (x40, x20, x10) DATA OUT (Q0 - Qn) (x40, x20, x10) DATA IN (D0 - Dn) MASTER RESET ( MRS) READ CLOCK (RCLK) READ ENABLE ( REN) OUTPUT ENABLE ( OE) EMPTY FLAG/OUTPUT READY ( EF/OR) PROGRAMMABLE ALMOST-EMPTY ( PAE) WRITE CLOCK (WCLK) WRITE ENABLE ( WEN) WRITE SINGLE DATA RATE ( WSDR) FULL FLAG/INPUT READY ( FF/IR) PROGRAMMABLE ALMOST-FULL ( PAF) IDT 72T4088 72T4098 72T40108 72T40118 PARTIAL RESET ( PRS) FIRST WORD FALL THROUGH (FWFT) RETRANSMIT ( RT) 5995 drw03 SERIAL ENABLE( SEN) INPUT WIDTH (IW) OUTPUT WIDTH (OW) SERIAL CLOCK (SCLK) MARK READ CHIP SELECT ( RCS) RCLK ECHO (ERCLK) REN ECHO (EREN) WRITE CHIP SELECT ( WCS) READ SINGLE DATA RATE ( RSDR) SERIAL OUTPUT (SO) SERIAL INPUT (SI) SERIAL READ ENABLE( SREN) WSDR RSDR Write Port Width Read Port Width H H Double Data Rate Double Data Rate H L Double Data Rate Single Data Rate L H Single Data Rate Double Data Rate L L Single Data Rate Single Data Rate TABLE 2 — DATA RATE-MATCHING CONFIGURATION MODES NOTE: 1. Pin status during Master Reset. 2. Data Rate Matching can be used in conjunction with Bus-Matching modes. |
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