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LH543620 Datasheet(PDF) 9 Page - Sharp Corporation |
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LH543620 Datasheet(HTML) 9 Page - Sharp Corporation |
9 / 38 page PIN NAME DESCRIPTION DATABUS D[35:0] 36-bit Input-Port Databus. The D port is the input port for the FIFO memory array, the resource registers, and the mailbox, or it may be directly connected to the output port. See Figure 4. D[35:0] is synchronous to the rising edge of CKI. Q[35:0] Three-State 36-Bit Output-Port Databus. The Q port is the output port for the FIFO memory array, the resource registers, and the mailbox, or it may be directly connected to the input port. See Figure 4. Q[35:0] is synchronous to the rising edge of CKO. The lower 16 bits of the Q port (Q[15:0]) may also be used as the input port for the resource register. CLOCKS CKI Input-Port Clock. CKI is a free-running waveform controlled by an oscillator. It may be irregular or asynchronous if minimum clock-HIGH times and clock-LOW times are met. CKO Output-Port Clock. CKO is a free-running waveform controlled by an oscillator. It may be irregular or asynchronous if minimum clock-HIGH times and clock-LOW times are met. PIN DESCRIPTIONS (FUNCTIONAL) CAPR D → MAILBOX MFF = L MEF = H IDLE * All the operations are synchronized to CKI, except MEF is set HIGH on CKO. * All the operations are synchronized to CKO, except MFF is set HIGH on CKI. 543620-5 SELECT INPUT PORT FUNCTION ADI [2:0] = MAILBOX RESOURCE REGISTER OE MAILBOX → Q MFF = H MEF = L RESOURCE REGISTER (ADO) → Q SELECT OUTPUT PORT FUNCTION ADO [2:0] = MAILBOX CAPR Q → RESOURCE REGISTER (ADO) LH L H LH D → RESOURCE REGISTER (ADI) RESOURCE REGISTER IDLE INPUT PORT OUTPUT PORT Figure 4. Resource Registers, Read and Write 1024 × 36 Synchronous FIFO LH543620 9 |
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