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參數(shù)資料
| 型號： | PT8R1002 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | CMOS Zero-IF Radio Transceiver IC for Bluetooth |
| 中文描述： | 的CMOS零中頻無線電收發(fā)器IC，藍牙 |
| 文件頁數(shù)： | 8/26頁 |
| 文件大小： | 516K |
| 代理商： | PT8R1002 |
Preliminary Data Sheet
PT8R1002 CMOS Zero-IF
Radio Transceiver IC for Bluetooth
PT0124(12/04)
Ver:2
8
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Transmit operation in Unidirectional interface
The primary signal for data transmit is TXACTIVE signal. The
actual data transmission starts after TXDATA_EN provided by
baseband. During transmit mode, DATACLK is sent from
PT8R1002 to baseband as a timing reference. The baseband
circuit transmits data to the PT8R1002 at the falling edge of
DATACLK, whereas the PT8R1002 latches the data at the ris-
ing edge of DATACLK. The state of PT8R1002 transitions
from the
idle state
when the baseband drives TXACTIVE
HIGH
.
TXACTIVE enables all the transmit circuitry except for the
final output stage. TXACTIVE is driven high at a time T
TuningTX
before the hop frequency synthesizer has settled to allow any
frequency offsets caused by the TX circuitry to be eliminated.
Either when, or just before, the TX circuitry has correctly settled
on frequency, the baseband drives TXDATA_EN
HIGH
, which
enables the PA stage, and causes the unidirectional interface
to enter the
transmit data state
. The baseband drives data to
the PT8R1002 on the falling edge of DATACLK, and the
PT8R1002 reads the transmit data on the rising edge. When all
the data has been transmitted, the baseband drives TXDATA_EN
and TXACTIVE
LOW
to disable the PA stage and return to the
idle state
.
Figure 6. Transmit procedure timing diagram in unidirectional interface
Idle
VCO Tuning
Tx-Ramp-Up
Tx-Burst
Tx-Ramp-Down
Idle
JTAG
Programming
TXACTIVE
TXDATA_EN
TXDATA
RXACTIVE
SYNCDETECT
RXDATA
DATACLK
HOP CMD
Tx DATA
t
TuningTX
t
Ramp-Up
t
Ramp-Down
DATACLK(13MHz,O)
TXACTIVE(I)
TXDATA_EN(I)
TXDATA(I)
RXACTIVE(I)
SYNCDETECT(I)
RXDATA(O)
PE
SYNC WORD TE
HEDER+PAYLOAD
PE
SYNC WORD
t
Ramp-Up
t
Ramp-Down
PE : Preamble
TE : Trailer
Figure 7. Transmit signal timing diagram in unidirectional interface
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相關代理商/技術參數(shù) |
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| PT8U1.5NFBHSMRA | 功能描述:CBL ASSY PIGTAIL 1.5' NF SMAM RoHS:是 類別:電纜組件 >> 同軸，RF 系列:* 標準包裝:1 系列:* |
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