STLC2416 STMicroelectronics, STLC2416 Datasheet - Page 23

• Manufacturer Part Number: STLC2416
• Description: Bluetooth Class I 1.8V 0.721Mbps 120-Pin LFBGA
• Manufacturer: STMicroelectronics

Specifications of STLC2416

• Package: 120LFBGA
• Power Class: Class I
• Maximum Data Rate: 0.721 Mbps
• Operating Supply Voltage: 1.8 V
• Lead Free Status / Rohs Status: Not Compliant

Figure 12. PCM interface timing
9
The UART Transport Layer has been specified by the Bluetooth™ SIG, and allows HCI level communica-
tion between a host controller (STLC2416) and a host (e.g. PC), via a serial line.
The objective of this HCI UART Transport Layer is to make it possible to use the Bluetooth™ HCI over a
serial interface between two UARTs on the same PCB. The HCI UART Transport Layer assumes that the
UART communication is free from line errors.
9.1 UART Settings
The HCI UART Transport Layer uses the following settings for RS232:
Flow control with RTS/CTS is used to prevent temporary UART buffer overrun. It should not be used for
flow control of HCI, since HCI has its own flow control mechanisms for HCI commands, HCI events and
HCI data.
If CTS is 1, then the Host/Host Controller is allowed to send.
If CTS is 0, then the Host/Host Controller is not allowed to send.
The flow-off response time defines the maximum time from setting RTS low until the byte flow actually
stops. The signals should be connected in a null-modem fashion; i.e. the local TXD should be connected
to the remote RXD and the local RTS should be connected to the remote CTS and vice versa.
Figure 13. UART Transport Layer
– Baud rate:
– Number of data bits:
– Parity bit:
– Stop bit:
– Flow control:
– Flow-off response time:
HCI UART TRANSPORT LAYER
BLUETHOOTH
PCM_B/A out
PCM_SYNC
PCM_A/B in
PCM_CLK
HOST
Configurable (Default baud rate: 57.600 kbps)
8
no parity
1 stop bit
RTS/CTS
3 ms
t
WCH
HCI UART TRANSPORT LAYER
t
WSH
t
BLUETHOOTH HCI
WCL
t
SSC
MSB
MSB
MSB-1
t
SDC
MSB-1
t
DCD
MSB-2
MSB-2
BLUETHOOTH
CONTROLLER
MSB-3
t
HCD
MSB-3
HOST
MSB-4
D02TL557
MSB-4
D02TL556
STLC2416
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