HD64F2168 Datasheet, PDF (603/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

16.3.24 BT Data Buffer (BTDTR)
BTDTR is used to implement the BT mode. BTDTR consists of two FIFOs: the host write transfer
FIFO and the host read transfer FIFO. Their capacities are 64 bytes each. When using BTDTR,
enable FIFO by means of the bits FSEL0 and FSEL1.
R/W
Bit Bit Name Initial Value Slave Host
7 to bit7 to bit0 Undefined R/W R/W
0
Description
The data written by the host is stored in FIFO (64
bytes) for host write transfer and read out by the
slave in order of host writing. The data written by
the slave is stored in FIFO (64 bytes) for host read
transfer and read out by the host in order of slave
writing.
Rev. 3.00, 03/04, page 563 of 830