CC2564MODN Datasheet, PDF (12/62 Pages) Texas Instruments – Bluetooth Host Controller Interface (HCI) Module

CC2564MODN, CC2564MODA
SWRS160D – FEBRUARY 2014 – REVISED DECEMBER 2015
4.7.3 Peripherals
4.7.3.1 UART
Figure 4-2 shows the UART timing diagram.
HCI_RTS
t1
t2
HCI_RX
t6
HCI_CTS
t3
t4
HCI_TX
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Start bit
Stop bit
10 bits
Figure 4-2. UART Timing
td_uart_swrs064
Table 4-3 lists the UART timing characteristics.
Table 4-3. UART Timing Characteristics
SYMBOL
t3
t4
t6
t1
t2
CHARACTERISTICS
Baud rate
Baud rate accuracy per byte
Baud rate accuracy per bit
CTS low to TX_DATA on
CTS high to TX_DATA off
CTS-high pulse width
RTS low to RX_DATA on
RTS high to RX_DATA off
CONDITION
Receive and transmit
Receive and transmit
Hardware flow control
Interrupt set to 1/4 FIFO
MIN
37.5
–2.5
–12.5
0
1
0
Figure 4-3 shows the UART data frame.
TYP MAX UNIT
4000 kbps
1.5%
12.5%
2
μs
1 byte
bit
2
μs
16 byte
tb
TX
STR
D0
D1
D2
Dn
Figure 4-3. Data Frame
Table 4-4 describes the symbols used in Figure 4-3.
PAR STP
td_uart_swrs064
Table 4-4. Data Frame Key
SYMBOL
STR
D0...Dn
PAR
STP
DESCRIPTION
Start bit
Data bits (LSB first)
Parity bit (optional)
Stop bit
12
Specifications
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