HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 652

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

21.3
The BT registers are accessed via firmware that is provided rather than directly by the user.
Therefore, no description is given here. For the functions of the firmware, refer to the separate
manual.
All registers in BT module are initialized only by the power-on reset input pin. They are not
initialized by the power-on reset and manual reset generated from WDT.
21.4
The Bluetooth interface (BT) supports the direct connection with the Renesas RF ICs, such as
HD157100NP and HD157102NP.
21.4.1
Figure 21.2 shows an example of the connection of this LSI and a Renesas RF IC, such as the
HD157100NP and HD157102NP. When a power-on reset signal is applied, the reset signal is sent
to the BT power-on reset/clock-resume control circuit and is also sent to the RF IC via the
RDI_CTRL4 pin. After the RDI_CTRL4 pin has fulfilled its function as a reset pin, the pin will
function as a power-supply pin for the interface of the RF IC. Even after the external power-on
reset signal has been negated, the reset state is maintained within this LSI.
Rev. 1.00, 02/04, page 614 of 804
Register Description
RF-IC Interface
Connection with RF ICs
RF-IC
interface
RF-IC
SPI interface
CPG
Figure 21.2 Example of Connection to RF IC
RDI_RXBDW_OUT
RDI_REFCLK_IN
RDI_TXTRDATA
RCI_SPI_TXRX
RCI_SPI_ENB
RCI_SPI_CLK
RDI_CTRL3
RDI_CTRL4
EXTAL
BT
A separate clock source may
provide the clock input on the
EXTAL pin.
BDATA1
BPKTCTL
BRCLK
BXTLEN
BnPWR
BDDATA
BDCLK
BnDEN
RF IC