BC41B143A-ANN-E4 ETC, BC41B143A-ANN-E4 Datasheet - Page 61

• Manufacturer Part Number: BC41B143A-ANN-E4
• Description: Bluecore 4-rom CSP EDR Single Chip Bluetooth v2.0 + EDR System
• Manufacturer: ETC

The UART interface is capable of resetting BlueCore4-ROM CSP upon reception of a break signal. A break is
identified by a continuous logic low (0V) on the UART_RX terminal, as shown in Figure 11.10. If t
than the value, defined by the PS Key PSKEY_HOST_IO_UART_RESET_TIMEOUT, (
This allows a host to initialise the system to a known state. Also, BlueCore4-ROM CSP can emit a break
character that can be used to wake the Host.
Table 11.6 shows a list of commonly used Baud rates and their associated values for the PS Key
PSKEY_UART_BAUD_RATE (
within the supported range can be set in the PS Key according to the formula in Equation 11.9.
BC41B143A-ds-002Pd
UART RX
Baud Rate
1382400
1843200
2764800
115200
230400
460800
921600
19200
38400
57600
76800
1200
2400
4800
9600
This material is subject to CSR’s non-disclosure agreement
0x204
Baud
PSKEY_UART_BAUD_RATE Store Value
). There is no requirement to use these standard values. Any Baud rate
0x0005
0x000a
0x0014
0x0027
0x004f
0x009d
0x00ec
0x013b
0x01d8
0x03b0
0x075f
0x0ebf
0x161e
0x1d7e
0x2c3d
Table 11.6: Standard Baud Rates
© Cambridge Silicon Radio Limited 2005
Rate
Hex
Figure 11.10: Break Signal
Equation 11.9: Baud Rate
=
PSKEY_UART
Production Information
. 0
004096
t
BRK
_BAUD_RATE
11325
1887
3775
5662
7550
Dec
157
236
315
472
944
10
20
39
79
5
Device Terminal Descriptions
0x1a4
), a reset occurs.
BRK
-0.82%
-0.18%
-0.02%
-0.01%
1.73%
1.73%
1.73%
0.45%
0.03%
0.14%
0.03%
0.03%
0.00%
0.00%
0.00%
Error
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is longer