參數(shù)資料
型號(hào)： STLC1511
廠商： 意法半導(dǎo)體
英文描述： NorthenLite⑩ G.lite BiCMOS Analog Front-End Circuit
中文描述： NorthenLite⑩G.lite的BiCMOS模擬前端電路
文件頁(yè)數(shù)： 20/31頁(yè)
文件大?。?/td> 358K
代理商： STLC1511
STLC1511
20/31
Figure 10. Clip Indicator Output.
Bit 0 in the “AFE Status” register is also set to high
when a clip occurs. This bit can be disabled via the
control interface, see Table 8 on page 21 for more
details. This bit is cleared on read. For more informa-
tion see "Digital Interface And Memory Map" on page
20.
3.6.2 Tx Loop Back
When bit “b1” of register “011” (AFE Control 4) is as-
serted the data received on the TXSIN[1:0] pins is
converted to parallel and then sent directly to both the
DAC and the RX parallel data input replacing the usu-
al data from the ADC.
This allows a “l(fā)oop back” to the input TX data from
TXSIN[1:0] to the RXSOUT[1:0] to help the testability
of the serial interface.
3.7 Digital Interface And Memory Map
All parametric specifications in Table 2 on page 6
and Table 3 on page 9 are guaranteed assuming that
the Digital Interface is inactive.
All parametric specifications in Table 2 and Table 3
are guaranteed assuming that the Digital Interface is
inactive. The digital interface operates at a rate of
35.328 MHz. The companion DSP chip, STLC1510,
sources the 35.328 MHz clock used by the AFE. To
minimize the impact of digital noise on the
STLC1511, this supplied clock is gated, and is only
enabled during data transfers and during reset.
The
clock does not need to be present in order to re-
set the chip.
The processor interface consists of four pins: 1) the
35.328 MHz gated clock (DIGCLK); 2) a data in port
for data transfers (DRX); a data out pin for data trans-
fer (DTX); and 4) a chip select pin (ENB).
There are a total of 12 bits which are serially transmit-
ted between the STLC1510 and AFE during data
transfers. The gated clock lasts for a duration of 12
clock cycles. This 12 cycle interaction consists of a R/
W bit, a 3 bit address, and a 8 bit data word.
The format for this serial transaction is given below in
Figure 11.
CK35M
FRMCLK
RXSOUT[0]
RXSOUT[1]
b[15:8]=7F
b[7:0]=FF
RXSOUT[0]
RXSOUT[1]
b[15:8]=80
b[7:0]=00
Positive Clip
Negative Clip
Figure 11. Digital Interface Timing Diagram
DIGCK
(35MHz)
ENB
DATA[b7:b0] for write access
ADDRESS
[a2:a0]
R/W
DRX
DATA[b7:b0] for read access
DTX
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參數(shù)描述
STLC1512 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:NorthenLite⑩ G.lite BiCMOS Analog Front-End Circuit
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