HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 654

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

21.5
This BT employs a function of the direct transfer of data with the RF IC over an SCO link without
intervention of the CPU. As an external Voice Codec IC, this BT supports a direct interface with
the STLC7550 (STMicroelectronics) or MC145483 (Motorola) Voice Codec IC.
21.5.1
Figure 21.3 shows an example of the connection of this BT and the Voice Codec (STLC7550).
The SCLK pin of the STLC7550 is not used.
The VCI_SCO_SYNC_OUT pin is multiplexed with the BREQ pin. This pin should be pulled-up
for the normal power-up sequence.
Rev. 1.00, 02/04, page 616 of 804
Voice Codec IC Interface
Voice Codec (STLC7550) Interface
Figure 21.3 Example of Connection to Voice Codec (STLC7550)
Voice Codec interface
VCI_CODEC_PWRDWN
VCI_SCO_SYNC_OUT
VCI_SCO_CLK_OUT
VCI_SCO_RX
VCI_SCO_TX
VCI_HWC
BT
MCLK
FS
DIN
DOUT
HCI
PWRDWN
Voice codec IC (STLC7550)
MCM
MS
SCLK