參數(shù)資料
型號： MC72000
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： Integrated Bluetooth Radio
中文描述： 集成藍(lán)牙無線
文件頁數(shù)： 99/156頁
文件大小： 1782K
代理商： MC72000
MOTOROLA
MC72000
Advance Information Data Sheet
Go to: www.freescale.com
99
TFCNT[3:0]—Transmit FIFO Counter
This read-only bit field indicates the number of data words in the TXFIFO. Table 46 shows the
TFCNT[3:0] bit field encoding.
Table 46. TFCNT[3:0] Encoding
RFWM[3:0]—Receive FIFO Full WaterMark
This bit field controls the threshold at which the receive FIFO full flag (RFF) will be set. RFF is set
whenever the data level in the RXFIFO reaches the selected threshold. For example, if RFWM=1, RFF
will be set after the SSI received 2 data words (one in SRX and the other in RXFIFO). Table 47 shows
RFWM[3:0] bit field encoding and Table 48 shows the status of RFF for all data levels of the RXFIFO.
Table 47. RFWM[3:0] Encoding
0110
0111
1000
6 data words in RXFIFO
7 data words in RXFIFO
8 data words in RXFIFO
Bits
Description
0000
0001
0010
0011
0100
0101
0110
0111
1000
0 data words in TXFIFO
1 data words in TXFIFO
2 data words in TXFIFO
3 data words in TXFIFO
4 data words in TXFIFO
5 data words in TXFIFO
6 data words in TXFIFO
7 data words in TXFIFO
8 data words in TXFIFO
Bits
Description
0000
0001
Reserved
RFF set when at least one data word has been written to the RXFIFO.
Set when RXFIFO = 1, 2, 3, 4, 5, 6, 7, or 8 data words
RFF set when 2 or more data words have been written to the RXFIFO.
Set when RXFIFO = 2, 3, 4, 5, 6, 7, or 8 data words
RFF set when 3 or more data words have been written to the RXFIFO.
Set when RXFIFO = 3, 4, 5, 6, 7, or 8 data words
RFF set when 4 or more data words have been written to the RXFIFO.
Set when RXFIFO = 4, 5, 6, 7, or 8 data words
RFF set when 5 or more data words have been written to the RXFIFO.
Set when RXFIFO = 5, 6, 7, or 8 data words
RFF set when 6 or more data words have been written to the RXFIFO.
Set when RXFIFO = 6, 7, or 8 data words
RFF set when 7 or more data words have been written to the RXFIFO.
Set when RXFIFO = 7 or 8 data words
RFF set when 8 data words have been written to the RXFIFO.
Set when RXFIFO = 8 data words
0010
0011
0100
0101
0110
0111
1000
Table 45. RFCNT[3:0] Encoding (Continued)
Bits
Description
F
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