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： 集成藍牙無線
文件頁數(shù)： 103/156頁
文件大?。?/td> 1782K
代理商： MC72000
MOTOROLA
MC72000
Advance Information Data Sheet
Go to: www.freescale.com
103
Figure 67. TSMB Register Diagram
The transmit slot mask registers are two 16-bit read/write registers. In network mode, these registers are
used by the transmitter to determine which action to take in the current transmission slot. Depending on the
setting of the bits, the transmitter either tri-states the transmitter data signal or transmits a data word and
generates the appropriate transmit status.
TSMA and TSMB can be viewed as a single 32-bit register, TSM. Bit n in TSM (TSMn) is an enable/
disable control bit for transmission in slot number N.
1 = Transmit sequence proceeds normally.
Data is transferred from the STX register (or TXFIFO, if enabled) to the shift register during
slot number N and flags are set appropriately.
0 = Transmit data signal of the transmitter is tri-stated during transmit time slot number N.
Data is not transferred to the TXSR and, therefore, transmit status flags are not changed.
The DSP is interrupted only for enabled slots. Data written to the STX register when the transmitter empty
(or transmit FIFO empty) interrupt request is being serviced is transmitted in the next enabled transmit time
slot.
The TSM slot mask does not conflict with the STSR. Even if a slot is enabled in the TSM, the user may
choose to write to the STSR to tri-state the signals of the enabled transmitters during the next transmission
slot. Setting the bits in the TSM affects the next frame transmission. The frame currently being transmitted
is not affected by the new TSM setting. If the TSM is read, it shows the current setting.
After a hardware RESET signal or executing a DSP software RESET instruction, the TSM register is reset
to $FFFFFFFF; that value enables all 32 slots for data transmission. The transmit DC setting determines
how many of these control bits are actually used.
7.4.5.3 Receive Slot Mask Registers (RSMA, RSMB)
Figure 68. RSMA Register Diagram
Base + 0x16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
W
TSMA[31:16]
RESET:
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
= Unimplemented or Reserved
Base + 0x18
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
W
RSMA[15:0]
RESET:
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
= Unimplemented or Reserved
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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