The Transmit Length register is a 32-bit read/write register ( This Figure ). This register is used to store the length (in bytes) of the transmit data stored in dual port memory. The higher 8 bits of the length value should be stored in data bits 15 to 8, while the lower 8 bits should be stored in data bits 7 to 0. The bit definition of this register for the ping and pong buffer interface is shown in Table: Transmit Length Register (0x07F4),(0x0FF4) .
