User Manual

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2015 Microchip Technology Inc.
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20
BM78SPPS5MC2 , RN4678
10.0 Throughput
The BM78 UART pins TXD and RXD connect to the UART pins of the host MCU. It is highly
recommended to use hardware flow control pins RTS and CTS. The BM78 hardware flow control is
disabled by default and must be configured to enable. The UART Baud is configurable. The
available signal rates are listed in Table 10‐1.
TABLE 10‐1: UART BAUD
Baud Crystal Frequency (MHz) Actual Baud Error Rate (%)
921600 16 941176 2.12
460800 16 457143 -0.79
307200 16 307692 0.16
230400 16 231884 0.64
115200 16 117647 2.1
57600 16 57145 -0.97
38400 16 38462 0.16
28800 16 28623 -0.62
19200 16 19231 0.16
14400 16 14480 0.55
9600 16 9615 0.16
4800 16 4808 0.16
2400 16 2399 -0.03
TABLE 10‐2: APP mode Throughput report
BR/EDR mode iPad mini (Wi‐Fi disable){iOS 7.0.4 (11B554a)}
921600 bps echo Tx echo Rx Tx Rx
Burst Throughput(byte/s) 14384.46 9845.31 14521.5 14333.3
Normal
Throughput(byte/s)
8437.462 8375.28 6674.11 14399.4
BR/EDR mode iPad mini (Wi‐Fi disable){iOS 7.0.4 (11B554a)}
115200 bps echo Tx echo Rx Tx Rx
Burst Throughput(byte/s) 11080.55 9284.37 11640.3 11134.8
Normal
Throughput(byte/s)
6248.758 6211.69 11513 11158.4
BR/EDR mode Android Samsung Note3/Android 4.3
921600 bps echo Tx echo Rx Tx Rx
Normal
Throughput(byte/s)
9727.704 9041.34 17030.1 10233.6