723616L15PFGI中文资料瑞萨数据手册PDF规格书

• Two independent FIFOs (64 X 36 storage capacity each) buffer

data between bidirectional 36-bit port A and two unidirectional

18/9-bit ports (Port B transmits, Port C receives)

• Clock frequencies up to 67 MHz (10 ns access time)

Free-running clock lines for each port: CLKA, CLKB and CLKC,

may be asynchronous or coincident (simultaneous reading and

writing of data is permitted)

• IDT Standard timing

• Empty flag functions: EFA (synchronized by CLKA) and EFB

(synchronized by CLKB)

• Full flag functions: FFA (synchronized by CLKA) and FFC

(synchronized by CLKC)

• Programmable Almost-Empty and Almost-Full flags; each has

four default offsets (4, 8, 12 and 16)

• Bus sizing of 18-bits (word) and 9-bits (byte) for ports B and C

• Byte order swapping on ports B and C

• Passive parity checking on ports A and C

• Parity generation can be selected for ports A and B

• Master Reset clears data and configures FIFO