User's Manual

Datalogic Scanning, Inc
959 Terry Street
Eugene, Oregon 97402
Page 65 10/23/2009
Revision X2
it will be sent at the old rate. The preferred method is to change this PS key then to reboot the chip.
Although this key can be set higher, the maximum rated speed for the UART hardware is 1.5 Mbaud.
This is a presentation PS key. PSKEY_HOSTIO_UART_PS_BLOCK is the real data store, but this key
should be used to access it.
Key Name Key Number Type Default Setting
PSKEY_UART_CONFIG 0x0205 uint16 none
Configures the settings of the chip's UART port.
Bit Meaning
0 0 => one stop bit, 1 => two stop bits.
1 0 => no parity bits, 1 => one parity bit.
2 0 => odd parity, 1 => even parity.
3 0 => h/w flow control disabled, 1 => enabled.
4 Set to 0.
5 0 => RTS deasserted, 1 => RTS asserted.
6 Set to 0.
7 0 => non-BCSP/H5 operation disabled, 1 => enabled.
8 Set to 0.
9 Set to 0.
10 Set to 0.
11 Set to 1.
12 0 => H5 operation disabled, 1 => enabled.
13 Set to 0.
14 Set to 0.
15 Set to 0.
This is a presentation PS key. PSKEY_HOSTIO_UART_PS_BLOCK is the real data store, but this key
should be used to access it.
This bitfield should be set to 0x0006 for BCSP and 0x00a8 for H4. PSKEY_HOST_INTERFACE
must
also be set appropriately.
Key Name Key Number Type Default Setting
PSKEY_STUB 0x0207 uint16 0
A key that can be harmlessly read or written.
Key Name Key Number Type Default Setting
PSKEY_TXRX_PIO_CONTROL 0x0209 uint16 0
The chip contains a radio power amplifier (PA) and low noise amplifier (LNA), allowing it to act as a
limited-range Bluetooth device. Although this is adequate for many applications, some systems require
more range and so use external PA/LNA devices.
If external devices are used the LNA is enabled by pin PIO0 and the PA by pin PIO1, i.e., this takes over
two pins of the PIO port.
Before transmitting, the chip normally ramps up the power to the internal PA, then it ramps it down again