View MT9315_1134345.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Obsolescence Notice
This product is obsolete. This information is available for your convenience only. For more information on Zarlink's obsolete products and replacement product lists, please visit
http://products.zarlink.com/obsolete_products/
CMOS MT9315 Acoustic Echo Canceller Advance Information
Features
* * * * * * * * * * * * * * Contains two echo cancellers: 112ms acoustic echo canceller + 16ms line echo canceller Works with low cost voice codec. ITU-T G.711 or signed mag /A-Law, or linear 2's comp Each port may operate in different format. Advanced NLP design - full duplex speech with no switched loss on audio paths Fast re-convergence time: tracks changing echo environment quickly Adaptation algorithm converges even during Double-Talk Designed for exceptional performance in high background noise environments Provides protection against narrow-band signal divergence Howling prevention stops uncontrolled oscillation in high loop gain conditions Offset nulling of all PCM channels Serial micro-controller interface ST-BUS or variable-rate SSI PCM interfaces User gain control provided for speaker path (-24dB to +21dB in 3dB steps) AGC on speaker path
DS5038 ISSUE 3 February 1999
Ordering Information MT9315AP MT9315AE 28 Pin PLCC 28 Pin PDIP
-40 C to + 85 C * * * * Handles up to 0 dB acoustic echo return loss and 0dB line ERL Transparent data transfer and mute options 20 MHz master clock operation Low power mode during PCM Bypass
Applications
* * * * Full duplex speaker-phone for digital telephone Echo cancellation for video conferencing Handsfree in automobile environment Full duplex speaker-phone for PC
Limiter
Sin MD1
/A-Law/
Linear
Offset Null
+
+
S2
ADV NLP
/A-Law
Micro Interface
Linear/
Sout DATA1
ACOUSTIC ECHO PATH
NBSD
S1
S3
DATA2
CONTROL Line ECho Path UNIT Adaptive Filter
Double Talk Detector R3 R2 -24 -> +21dB User Gain
PORT 1
PORT 2
Adaptive Filter
Howling Controller
NBSD R1
MD2 Rout Linear/ /A-Law
Limiter AGC
SCLK
ADV NLP
CS
+
+
Offset Null
/A-Law/
Linear
Rin
VDD
VSS
PWRDN
FORMAT
ENA2
ENA1
LAW
F0i
BCLK/C4i
MCLK
Figure 1 - Functional Block Diagram
1
MT9315
Advance Information
MD2 ENA2 MD1 ENA1 IC IC BCLK/C4i Rin Sin VSS MCLK IC IC IC
Figure 2 - Pin Connections
Pin Description
Pin # 1 Name ENA1 Description SSI Enable Strobe / ST-BUS Mode for Rin/Sout (Input). This pin has dual functions depending on whether SSI or ST-BUS is selected. For SSI, this strobe must be present for frame synchronization. This is an active high channel enable strobe, 8 or 16 data bits wide, enabling serial PCM data transfer for on Rin/Sout pins. Strobe period is 125 microseconds. For ST-BUS, this pin, in conjunction with the MD1 pin, will select the proper ST-BUS mode for Rin/Sout pins (see ST-BUS Operation description). ST-BUS Mode for Rin/Sout (Input). When in ST-BUS mode, this pin, in conjunction with the ENA1 pin, will select the proper ST-BUS mode for Rin/Sout pins (see ST-BUS Operation description). Connect this pin to Vss in SSI mode. SSI Enable Strobe / ST-BUS Mode for Sin/Rout (Input).This pin has dual functions depending on whether SSI or ST-BUS is selected. For SSI, this is an active high channel enable strobe, 8 or 16 data bits wide, enabling serial PCM data transfer on Sin/Rout pins. Strobe period is 125 microseconds. For ST-BUS, this pin, in conjunction with the MD2 pin, will select the proper ST-BUS mode for Sin/Rout pins (see ST-BUS Operation description). ST-BUS Mode for Sin/Rout (Input).When in ST-BUS mode, this pin in conjunction with the ENA2 pin, will select the proper ST-BUS mode for Sin/Rout pins (see ST-BUS Operation description). Connect this pin to Vss in SSI mode. Receive PCM Signal Input (Input). 128 kbit/s to 4096 kbit/s serial PCM input stream. Data may be in either companded or 2's complement linear format. This is the Receive Input channel from the line (or line) side. Data bits are clocked in following SSI or ST-BUS timing requirements. Send PCM Signal Input (Input). 128 kbit/s to 4096 kbit/s serial PCM input stream. Data may be in either companded or 2's complement linear format. This is the Send Input channel (from the microphone). Data bits are clocked in following SSI or ST-BUS timing requirements. Digital Ground: Nominally 0 volt. Master Clock (Input): Nominal 20 MHz Master Clock input. May be connected to an asynchronous (relative to frame signal) clock source. Internal Connection (Input): Must be tied to Vss. Internal Connection (Input). Tie to Vss. A/ Law Select (Input). When low, selects -Law companded PCM. When high, selects ALaw companded PCM. This control is for both serial pcm ports.
2
MD1
3
ENA2
4
MD2
5
Rin
6
Sin
7 8 9 10, 11 12
VSS MCLK IC IC LAW
2
LAW FORMAT PWRDN NC NC SCLK CS
ENA1 MD1 ENA2 MD2 Rin Sin VSS MCLK IC IC IC LAW FORMAT PWRDN
1 2 3 4 5 6 7 8 9 10 11 12 13 14
PDIP
28 27 26 25 24 23 22 21 20 19 18 17 16 15
IC IC BCLK/C4i F0i Rout Sout VDD NC DATA1 DATA2 CS SCLK NC NC
4 3 2 1 28 27 26
*
12 13 14 15 16 17 18
5 6 7 8 9 10 11
PLCC
25 24 23 22 21 20 19
F0i Rout Sout VDD NC DATA1 DATA2
Advance Information
Pin Description (continued)
Pin # 13 14 15, 16 17 18 19 Name Description
MT9315
FORMAT ITU-T/Sign Mag (Input). When low, selects sign-magnitude PCM code. When high, selects ITU-T (G.711) PCM code. This control is for both serial pcm ports. PWRDN Power-down (Input). An active low resets the device and puts the MT9315 into a low-power stand-by mode. NC SCLK CS DATA2 No Connect (Output). This pin should be left un-connected. Serial Port Synchronous Clock (Input). Data clock for the serial microport interface. Serial Port Chip Select (Input). Enables serial microport interface data transfers. Active low. Serial Data Receive (Input). In Motorola/National serial microport operation, the DATA2 pin is used for receiving data. In Intel serial microport operation, the DATA2 pin is not used and must be tied to Vss or Vdd. Serial Data Port (Bidirectional). In Motorola/National serial microport operation, the DATA1 pin is used for transmitting data. In Intel serial microport operation, the DATA1 pin is used for transmitting and receiving data. No Connect (Output). This pin should be left un-connected. Positive Power Supply. Nominal is 5V Send PCM Signal Output (Output). 128 kbit/s to 4096 kbit/s serial PCM output stream. Data may be in either companded or 2's complement linear PCM format. This is the Send Out signal after acoustic echo cancellation and Non-linear processing. Data bits are clocked out following SSI or ST-BUS timing requirements. Receive PCM Signal Output (Output). 128 kbit/s to 4096 kbit/s serial PCM output stream. Data may be in either companded or 2's complement linear PCM format. This is the Receive out signal after line echo cancellation Non-linear processing, AGC, and gain control. Data bits are clocked out following SSI or ST-BUS timing requirements. Frame Pulse (Input). In ST-BUS operation, this is an active-low frame alignment pulse. SSI operation is enabled by connecting this pin to Vss.
20
DATA1
21 22 23
NC VDD Sout
24
Rout
25 26
F0i
BCLK/C4i Bit Clock/ST-BUS Clock (Input). In SSI operation, BCLK pin is a 128 kHz to 4.096 MHz bit clock. This clock must be synchronous with ENA1, and ENA2 enable strobes. In ST-BUS operation, C4i pin must be connected to the 4.096MHz (C4) system clock. IC Internal Connection (Input). Tie to Vss.
27, 28
Notes: 1. All inputs have TTL compatible logic levels except for MCLK, Sin and Rin pins which have CMOS compatible logic levels and PWRDN pin which has Schmitt trigger compatible logic levels. 2. All outputs are CMOS pins with CMOS logic levels except DATA1 which is TTL bidirectional.
Glossary
Double-Talk Near-end Single-Talk Far-end Single-Talk ADV NLP Howling Narrowband NBSD Noise-Gating Offset Nulling Reverberation time ERL ERLE AGC Simultaneous signals present on Rin and Sin. Signals only present at Sin input. Signals only present at Rin input. Advanced Non-Linear-Processor Oscillation caused by feedback from acoustic and line echo paths Any mono or dual sinusoidal signals Narrow Band Signal Detector Audible switching of background noise Removal of DC component The time duration before an echo level decays to -60dBm Echo Return Loss Echo Return Loss Enhancement Automatic Gain Control
3
MT9315
Functional Description
The MT9315 device contains two echo cancellers, as well as the many control functions necessary to operate the echo cancellers. One canceller is for acoustic speaker to microphone echo, and one for line echo cancellation. The MT9315 provides clear signal transmission in both audio path directions to ensure reliable voice communication, even with low level signals. The MT9315 does not use variable attenuators during double-talk or single-talk periods of speech, as do many other acoustic echo cancellers for speaker-phones. Instead, the MT9315 provides high performance full-duplex operation similar to network echo cancellers, so that users experience clear speech and un-interrupted background signals during the conversation. This prevents subjective sound quality problems associated with "noise gating" or "noise contrasting". The MT9315 uses an advanced adaptive filter algorithm that is double-talk stable, which means that convergence takes place even while both parties are talking 1. This algorithm allows continual tracking of changes in the echo path, regardless of doubletalk, as long as a reference signal is available for the echo canceller.
(1. Patent Pending)
Advance Information
Law ITU-T G.711, /A-Law Sign-Mag or linear 2's complement coding. Automatic gain control on the receive speaker path.
*
Adaptation Speed Control The adaptation speed of the acoustic echo canceller is designed to optimize the convergence speed versus divergence caused by interfering near-end signals. Adaptation speed algorithm takes into account many different factors such as relative double-talk condition, far end signal power, echo path change, and noise levels to achieve fast convergence. Advanced Non-Linear Processor (ADV-NLP) 2
(2. Patent Pending)
After echo cancellation, there is likely to be residual echo which needs to be removed so that it will not be audible. The MT9315 uses an NLP to remove low level residual echo signals which are not comprised of background noise. The operation of the NLP depends upon a dynamic activation threshold, as well as a double-talk detector which disables the NLP during double-talk periods. The MT9315 keeps the perceived noise level constant, without the need for any variable attenuators or gain switching that causes audible "noise gating". The noise level is constant and identical to the original background noise even when the NLP is activated. For each audio path, the NLP can be disabled by setting the NLP- bit to 1 in the LEC or AEC control registers. Narrow Band Signal Detector (NBSD)
(3. Patent Pending)
The echo tail cancellation capability of the acoustic echo canceller has been sized appropriately (112ms) to cancel echo in an average sized office with a reverberation time of less than 112ms. The 16ms line echo canceller is sufficient to ensure a high ERLE for most line circuits. In addition to the echo cancellers, the following functions are supported: * Control of adaptive filter convergence speed during periods of double-talk, far end singletalk, and near-end echo path changes. * Control of Non-Linear Processor thresholds for suppression of residual non-linear echo. * Howling detector to identify when instability is starting to occur, and to take action to prevent oscillation. * Narrow-Band Detector for preventing adaptive filter divergence caused by narrow-band signals * Offset Nulling filters for removal of DC components in PCM channels. * Limiters that introduce controlled saturation levels. * Serial controller interface compatible with Motorola, National and Intel microcontrollers. * PCM encoder/decoder compatible with /A-
3
Single or multi-frequency tones (e.g. DTMF, or signalling tones) present in the reference input of an echo canceller for a prolonged period of time may cause the adaptive filter to diverge. The Narrow Band Signal Detector (NBSD) is designed to prevent this divergence by detecting single or multi-tones of arbitrary frequency, phase, and amplitude. When narrow band signals are detected, the filter adaptation process is stopped but the echo canceller continues to cancel echo. The NBSD can be disabled by setting the NB- bit to 1 in the MC control registers.
4
Advance Information
Howling Detector (HWLD)
(4. Patent Pending)
MT9315
4
The AGC can be disabled by setting the AGC- bit to 1 in MC control register. Mute Function A pcm mute function is provided for independent control of the Receive and Send audio paths. Setting the MUTE_R or MUTE_S bit in the MC register, causes quiet code to be transmitted on the Rout or Sout paths respectively. Quiet code is defined according to the following table.
LINEAR SIGN/ 16 bits MAGNITUDE 2's -Law complement A-Law +Zero (quiet code) 0000h 80h CCITT (G.711)
The Howling detector is part of an Anti-Howling control, designed to prevent oscillation as a result of positive feedback in the audio paths. The HWLD can be disabled by setting the AH- bit to 1 in the (MC) control register. Offset Null Filter To ensure robust performance of the adaptive filters at all times, any DC offset that may be present on either the Rin signal or the Sin signal, is removed by highpass filters. These filters have a corner frequency placed at 40Hz. The offset null filters can be disabled by setting the HPF- bit to 1 in the LEC or AEC control registers. Limiters To prevent clipping in the echo paths, two limiters with variable thresholds are provided at the outputs. The Rout limiter threshold is in Rout Limiter Register 1 and 2. The Sout limiter threshold is in Sout Limiter Register. Both output limiters are always enabled. User Gain The user gain function provides the ability for users to adjust the audio gain in the receive path (speaker path). This gain is adjustable from -24dB to +21dB in 3dB steps. It is important to use ONLY this user gain function to adjust the speaker volume. The user gain function in the MT9315 is optimally placed between the two echo cancellers such that no reconvergence is necessary after gain changes. The gain can be accessed through Receive Gain Control Register. AGC The AGC function is provided to limit the volume in the speaker path. The gain of the speaker path is automatically reduced during the following conditions: * * * When clipping of the receive signal occurs. When initial convergence of the acoustic echo canceller detects unusually large echo return. When howling is detected.
-Law
FFh
A-Law D5h
Table 1 - Quiet PCM Code Assignment Bypass Control A PCM bypass function is provided to allow transparent transmission of pcm data through the MT9315. When the bypass function is active, pcm data passes transparently from Rin to Rout and from Sin to Sout, with bit-wise integrity preserved. When the Bypass function is selected, most internal functions are powered down to provide low power consumption. The BYPASS control bit is located in the main control MC register. Adaptation Enable/Disable Adaptation control bits are located in the AEC and LEC control registers. When the ADAPT- bit is set to 1, the adaptive filter is frozen at the current state. In this state, the device continues to cancel echo with the current echo model. When the ADAPT- bit is set to 0, the adaptive filter is continually updated. This allows the echo canceller to adapt and track changes in the echo path. This is the normal operating state. MT9315 Throughput Delay In all modes, voice channels always have 2 frames of delay. In ST-BUS operation, the D and C channels have a delay of one frame.
5
MT9315
Power Down Forcing the PWRDN pin to logic low, will put the MT9315 into a power down state. In this state all internal clocks are halted, the DATA1, Sout and Rout pins are tristated. The user should hold the PWRDN pin low for 200 msec on Power-up. This will insure that the device powers up in a proper state. The device will automatically begin the execution of initialization routines when the PWRDN pin is returned to logic high and a clock is applied to the MCLK pin. The initialization routines execute for one frame and will set the MT9315 to default register values. After power down, the user waits for 2 complete 8 KHz frames prior to writing to the device registers.
PORT1 Rin/Sout
Enable Pins MD1 ENA1
Advance Information
ST-BUS Mode Selection
PORT2 Sin/Rout
Enable Pins MD2 ENA2
0 0 1
0 1 0
Mode 1. 8 bit companded PCM I/O on timeslot 0 Mode 2. 8 bit companded PCM I/O on timeslot 2. Mode 3. 8 bit companded PCM I/O on timeslot 2. Includes D & C channel bypass in timeslots 0 & 1. Mode 4. 16 bit 2's complement linear PCM I/O on timeslots 0 & 1.
0 0 1
0 1 0
1
1
1
1
Table 2 - ST-BUS Mode Select SSI Operation The SSI PCM interface consists of data input pins (Rin, Sin), data output pins (Sout, Rout), a variable rate bit clock (BCLK), and two enable pins (ENA1, ENA2) to provide strobes for data transfers. The active high enable may be either 8 or 16 BCLK cycles in duration. Automatic detection of the data type (8 bit companded or 16 bit 2's complement linear) is accomplished internally. The data type cannot change dynamically from one frame to the next. In SSI operation, the frame boundary is determined by the rising edge of the ENA1 enable strobe (see Figure 7). The other enable strobe (ENA2) is used for parsing input/output data and it must pulse within 125 microseconds of the rising edge of ENA1. In SSI operation, the enable strobes may be a mixed combination of 8 or 16 BCLK cycles allowing the flexibility to mix 2's complement linear data on one port (e.g., Rin/Sout) with companded data on the other port (e.g., Sin/Rout).
Enable Strobe Pin ENA1 ENA2 Designated PCM I/O Port Line Side Echo Path (PORT 1) Acoustic Side Echo Path (PORT 2)
PCM Data I/O
The PCM data transfer for the MT9315 is provided through two PCM ports. One port consists of Rin and Sout pins while the second port consists of Sin and Rout pins. The data are transferred through these ports according to either ST-BUS or SSI conventions. The device determines the convention by monitoring the signal applied to the F0i pin. When a valid STBUS frame pulse is applied to the F0i pin, the MT9315 will assume ST-BUS operation. If F0i is tied continuously to Vss, the MT9315 will assume SSI operation. ST-BUS Operation The ST-BUS PCM interface conforms to Mitel's STBUS standard and it is used to transport 8 bit companded PCM data (using one timeslot) or 16 bit 2's complement linear PCM data (using two timeslots). The MD1/ENA1 pins select the timeslot on the Rin/Sout port while the MD2/ENA2 pin selects the timeslot on the Sin/Rout port. See Table 2 and Figures 3 to 6.
Table 3 - SSI Enable Strobe Pins PCM Law and Format Control (LAW, FORMAT) The PCM companding/coding law used by the MT9315 is controlled through the LAW and FORMAT pins. ITU-T G.711 companding curves for -Law and A-Law are selected by the LAW pin. PCM coding ITU-T G.711 and Sign-Magnitude are selected by the FORMAT pin. See Table 4.
6
Advance Information
Sign-Magnitude FORMAT=0 ITU-T (G.711) FORMAT=1 -LAW LAW = 0 1000 0000 1111 1111 0111 1111 0000 0000 A-LAW LAW =1 1010 1010 1101 0101 0101 0101 0010 1010
MT9315
microport consists of a transmit/receive data pin (DATA1), a receive data pin (DATA2), a chip select pin (CS) and a synchronous data clock pin (SCLK). The MT9315 automatically adjusts its internal timing and pin configuration to conform to Intel or Motorola/ National requirements. The microport dynamically senses the state of the SCLK pin each time CS pin becomes active (i.e. high to low transition). If SCLK pin is high during CS activation, then Intel mode 0 timing is assumed. In this case DATA1 pin is defined as a bi-directional (transmit/receive) serial port and DATA2 is internally disconnected. If SCLK is low during CS activation, then Motorola/National timing is assumed and DATA1 is defined as the data transmit pin while DATA2 becomes the data receive pin. The MT9315 supports Motorola half-duplex processor mode (CPOL=0 and CPHA=0). This means that during a write to the MT9315, by the Motorola processor, output data from the DATA1 pin must be ignored. This also means that input data on the DATA2 pin is ignored by the MT9315 during a valid read by the Motorola processor. All data transfers through the microport are two bytes long. This requires the transmission of a Command/ Address byte followed by the data byte to be written to or read from the addressed register. CS must remain low for the duration of this two-byte transfer. As shown in Figures 8 and 9, the falling edge of CS indicates to the MT9315 that a microport transfer is about to begin. The first 8 clock cycles of SCLK after the falling edge of CS are always used to receive the Command/Address byte from the microcontroller. The Command/Address byte contains information detailing whether the second byte transfer will be a read or a write operation and at what address. The next 8 clock cycles are used to transfer the data byte between the MT9315 and the microcontroller. At the end of the two-byte transfer, CS is brought high again to terminate the session. The rising edge of CS will tri-state the DATA1 pin. The DATA1 pin will remain tristated as long as CS is high. Intel processors utilize Least Significant Bit (LSB) first transmission while Motorola/National processors use Most Significant Bit (MSB) first transmission. The MT9315 microport automatically accommodates these two schemes for normal data bytes. However, to ensure timely decoding of the R/W and address information, the Command/Address byte is defined differently for Intel and Motorola/National operations. Refer to the relative timing diagrams of Figure 8 and Figure 9. Receive data bits are sampled on the rising edge of SCLK while transmit data is clocked out on the falling edge of SCLK. Detailed microport timing is shown in Figure 13 and Figure 14.
7
PCM Code
/A-LAW LAW = 0 or 1 + Full Scale + Zero - Zero - Full Scale 1111 1111 1000 0000 0000 0000 0111 1111
Table 4 - Companded PCM
Linear PCM The 16-bit 2's complement PCM linear coding permits a dynamic range beyond that which is specified in ITU-T G.711 for companded PCM. The echo-cancellation algorithm will accept 16 bits 2's complement linear code which gives a maximum signal level of +15dBm0. Bit Clock (BCLK/C4i) The BCLK/C4i pin is used to clock the PCM data in both SSI (BCLK) and ST-BUS (C4i) operations. In SSI operation, the bit rate is determined by the BCLK frequency. This input must contain either eight or sixteen clock cycles within the valid enable strobe window. BCLK may be any rate between 128 KHz to 4.096 MHz and can be discontinuous outside of the enable strobe windows defined by ENA1, ENA2 pins. Incoming PCM data (Rin, Sin) are sampled on the falling edge of BCLK while outgoing PCM data (Sout, Rout) are clocked out on the rising edge of BCLK. See Figure 11. In ST-BUS operation, connect the system C4 (4.096MHz) clock to the C4i pin. Master Clock (MCLK) A nominal 20MHz master clock (MCLK) is required. The MCLK input may be asynchronous with the 8KHz frame.
Microport
The serial microport provides access to all MT9315 internal read and write registers. This microport is compatible with Intel MCS-51 (mode 0), Motorola SPI (CPOL=0, CPHA=0), and National Semiconductor Microwire specifications. The
MT9315
C4i
Advance Information
F0i
0
1
2
3
4
B
PORT1 Rin
76 543210
Sout PORT2 Sin
76 543210
76 543210
Rout
76 543210
outputs = High impedance inputs = don't care
In ST-BUS Mode 1, echo canceller I/O channels are assigned to ST-BUS timeslot 0. Note that the user could configure PORT1 and PORT2 into different ST-BUS modes.
Figure 3 - ST-BUS 8 Bit Companded PCM I/O on Timeslot 0 (Mode 1)
C4i
F0i
0
1
2
3
4
B
PORT1 Rin
76 543210
Sout
76 543210
PORT2 Sin
76 543210
Rout
outputs = High impedance inputs = don't care
76 543210
In ST-BUS Mode 2, echo canceller I/O channels are assigned to ST-BUS timeslot 2. Note that the user could configure PORT1 and PORT2 into different ST-BUS modes.
Figure 4 - ST-BUS 8 Bit Companded PCM I/O on Timeslot 2 (Mode 2)
8
Advance Information
MT9315
C4i
F0i
0
1
2
3
4
D
PORT1 Rin
C
B
765432107654321076543210 ECA
Sout
765432107654321076543210
PORT2 Sin
765432107654321076543210 ECA
Rout
765432107654321076543210
outputs = High impedance inputs = don't care indicates that an input channel is bypassed to an output channel
ST-BUS Mode 3 supports connection to 2B+D devices where timeslots 0 and 1 transport D and C channels and echo canceller I/O channels are assigned to ST-BUS timeslot 2. Both PORT1 and PORT2 must be configured in ST-BUS Mode 3.
Figure 5 - ST-BUS 8 Bit Companded PCM I/O with D and C channels (Mode 3)
C4i
F0i
Rin PORT1 Sout
S 1413 12 11 10 9 8 7 6 5 4 3 2 1 0
S 1413 12 11 10 9 8 7 6 5 4 3 2 1 0
Sin PORT2 Rout
S 1413 12 11 10 9 8 7 6 5 4 3 2 1 0
S 1413 12 11 10 9 8 7 6 5 4 3 2 1 0
outputs = High impedance inputs = don't care
ST-BUS Mode 4 allows 16 bit 2's complement linear data to be transferred using ST-BUS I/O timing. Note that PORT1 and PORT2 need not necessarily both be in mode 4.
Figure 6 - ST-BUS 16 Bit 2's complement linear PCM I/O (Mode 4)
9
MT9315
BCLK
Advance Information
PORT1 ENA1
Rin
8 or 16 bits
Sout PORT2
8 or 16 bits
ENA2
Sin
8 or 16 bits
Rout
outputs = High impedance inputs = don't care
8 or 16 bits
Note that the two ports are independent so that, for example, PORT1 can operate with 8 bit enable strobes and PORT2 can operate with 16 bit enable strobes.
Figure 7 - SSI Operation
COMMAND/ADDRESS
DATA INPUT/OUTPUT
DATA 1
R/W A0
A1 A2 A3 A4 A5
X
D0 D1 D2 D3 D4 D5 D6 D7
SCLK
CS

This delay is due to internal processor timing and is equal to Tsch time. The delay is transparent to MT9315. The MT9315: latches receive data on the rising edge of SCLK outputs transmit data on the falling edge of SCLK The falling edge of CS indicates that a COMMAND/ADDRESS byte will be transmitted from the microprocessor. The subsequent byte is always data followed by CS returning high. A new COMMAND/ADDRESS byte may be loaded only by CS cycling high then low again. The COMMAND/ADDRESS byte contains: 1 bit - Read/Write 6 bits - Addressing Data 1 bit - Unused
Figure 8 - Serial Microport Timing for Intel Mode 0
10
Advance Information
MT9315
COMMAND/ADDRESS
DATA INPUT
DATA 2 Receive
R/W A5 A4 A3 A2 A1 A0
X
D7 D6 D5 D4 D3 D2 D1 D0 DATA OUTPUT
DATA 1 Transmit
High Impedance
D7 D6 D5 D4 D3 D2 D1 D0
SCLK
CS
This delay is due to internal processor timing and is equal to Tsch time. The delay is transparent to MT9315. The MT9315: latches receive data on the rising edge of SCLK outputs transmit data on the falling edge of SCLK
The falling edge of CS indicates that a COMMAND/ADDRESS byte will be transmitted from the microprocessor. The subsequent byte is always data followed by CS returning high. A new COMMAND/ADDRESS byte may be loaded only by CS cycling high then low again. The COMMAND/ADDRESS byte contains: 1 bit - Read/Write 6 bits - Addressing Data 1 bit - Unused
Figure 9 - Serial Microport Timing for Motorola Mode 00 or National Microwire
11
MT9315
Absolute Maximum Ratings*
Parameter 1 2 3 4 5 Supply Voltage Input Voltage Output Voltage Swing Continuous Current on any digital pin Storage Temperature Symbol VDD-VSS Vi Vo Ii/o TST -65 Min -0.3 VSS-0.3 VSS-0.3
Advance Information
Max 7.0 VDD+ 0.3 VDD+ 0.3 20 150
Units V V V mA C mW
6 Package Power Dissipation PD(5v) 500 * Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
.
Recommended Operating Conditions - Voltages are with respect to ground (VSS) unless otherwise stated
Characteristics 1 2 3 4 5 6 Supply Voltage TTL Input High Voltage TTL Input Low Voltage CMOS Input High Voltage CMOS Input Low Voltage Operating Temperature TA Sym VDD Min 4.5 2.4 VSS 2.1 VSS -40 Typ 5.0 Max 5.5 VDD 0.4 VDD 0.5 +85 Units V V V V V C Test Conditions
Echo Return Limits Characteristics 1 2 Acoustic Echo Return Line Echo Return Min Typ Max 0 0 Units dB dB Test Conditions Measured from Rout -> Sin Measured from Sout -> Rin
DC Electrical Characteristics*- Voltages are with respect to ground (VSS) unless otherwise stated.
Characteristics Standby Supply Current: 1 Operating Supply Current: Input HIGH voltage (TTL) Input LOW voltage (TTL) Input HIGH voltage (CMOS) Input LOW voltage (CMOS) Input leakage current High level output voltage Low level output voltage High impedance leakage Output capacitance Sym ICC IDD VIH VIL VIHC VILC IIH/IIL VOH VOL IOZ Co 1 10 0.9VDD 0.1VDD 10 0.1 0.7VDD 0.3VDD 10 2.0 0.8 50 Min Typ Max 60 Units A mA V V V V A V V A pF Conditions/Notes PWRDN = 0 PWRDN = 1, clocks active All except MCLK,Sin,Rin All except MCLK,Sin,Rin MCLK,Sin,Rin MCLK,Sin,Rin VIN=VSS to VDD IOH=2.5mA IOL=5.0mA VIN=VSS to VDD
2 3 4 5 6 7 8 9 10
12
Advance Information
DC Electrical Characteristics*- Voltages are with respect to ground (VSS) unless otherwise stated.
Characteristics 11 12 Input capacitance PWRDN Positive Threshold Voltage Hysteresis Negative Threshold Voltage Sym Ci V+ VH V0.75VDD 1.0 0.25VDD Min Typ 8 Max Units pF V V V
MT9315
Conditions/Notes
Typical figures are at 25C and are for design aid only: not guaranteed and not subject to production testing. *DC Electrical Characteristics are over recommended temperature and supply voltage.
AC Electrical Characteristics - Serial Data Interfaces - Voltages are with respect to ground (VSS) unless
otherwise stated
Characteristics 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 MCLK Clock High MCLK Clock Low MCLK Frequency BCLK/C4i Clock High BCLK/C4i Clock Low BCLK/C4i Period SSI Enable Strobe to Data Delay (first bit) SSI Data Output Delay (excluding first bit) SSI Output Active to High Impedance SSI Enable Strobe Signal Setup SSI Enable Strobe Signal Hold SSI Data Input Setup SSI Data Input Hold F0i Setup F0i Hold ST-BUS Data Output delay ST-BUS Output Active to High Impedance ST-BUS Data Input Hold time ST-BUS Data Input Setup time
Sym tMCH tMCL fCLK tBCH, tC4H tBLL, tC4L tBCP tSD tDD tAHZ tSSS tSSH tDIS tDIH tF0iS tF0iH tDSD tASHZ tDSH tDSS
Min 20 20 19.15 90 90 240 80 80 80 10 15 10 15 20 20 80 80 20 20
Typ
Max
Units ns ns
Test Notes
20.5
MHz ns ns
7900
ns ns ns ns CL=150pF CL=150pF CL=150pF
tBCP -15 tBCP -10
ns ns ns ns
150 150
ns ns ns ns ns ns CL=150pF CL=150pF
Timing is over recommended temperature and power supply voltages.
13
MT9315
AC Electrical Characteristics - Microport Timing
Characteristics 1 2 3 4 5 6 7 8 9 10 Input Data Setup Input Data Hold Output Data Delay Serial Clock Period SCLK Pulse Width High SCLK Pulse Width Low CS Setup-Intel CS Setup-Motorola CS Hold CS to Output High Impedance Sym tIDS tIDH tODD tSCP tSCH tSCL tCSSI tCSSM tCSH tOHZ Min 100 30 100 500 250 250 200 100 100 100 Typ Max Units ns ns ns ns ns ns ns ns ns ns
Advance Information
Test Notes
CL=150pF
CL=150pF
Timing is over recommended temperature range and recommended power supply voltages.
Characteristic TTL reference level CMOS reference level Input HIGH level Input LOW level Rise/Fall HIGH measurement point Rise/Fall LOW measurement point
Symbol VTT VCT VH VL VHM VHL
TTL Pin 1.5 2.4 0.4 2.0 0.8
CMOS Pin 0.5*VDD 0.9*VDD 0.1*VDD 0.7*VDD 0.3*VDD
Units V V V V V V
Table 8 - Reference Level Definition for Timing Measurements
tMCH MCLK (3)
VH
VCT
VL
tMCL
Figure 10 - Master Clock - MCLK
Notes: 1. CMOS output 2. TTL input compatible 3. CMOS input (see Table 8 for symbol definitions)
14
Advance Information
MT9315
Bit 0 Bit 1 VCT
Sout/Rout (1) tSD BCLK (2)
VH
tDD
tBCH
tAHZ
VTT
VL
tSSS ENA1/ENA2 (2) or ENB1/ENB2 (2)
VH
tBCP
tBCL
tSSH
VTT
VL
tDIS tDIH
VH
Bit 0
Bit 1 VCT
Rin/Sin (3)
VL
Figure 11 - SSI Data Port Timing
Notes: 1. CMOS output 2. TTL input compatible 3. CMOS input (see Table 8 for symbol definitions)
Bit 0 Sout/Rout (1) tDSD tC4H C4i (2)
VH
Bit 1 VCT tASHZ
VTT
VL
tF0iS tF0iH F0i (2)
VH
tC4L
VTT
VL
tDSS tDSH Rin/Sin (3)
VH
VCT
VL
Bit 0
Bit 1
Figure 12 - ST-BUS Data Port Timing
Notes: 1. CMOS output 2. TTL input compatible 3. CMOS input (see Table 8 for symbol definitions)
15
MT9315
Advance Information
DATA INPUT DATA1 (1, 2) tIDS tIDH SCLK (2)
VH
DATA OUTPUT VTT,VCT tSCH tODD tOHZ
VTT
VL
tCSSI CS (2)
VH
tSCL
tSCP
tCSH
VTT
VL
Figure 13 - INTEL Serial Microport Timing
Notes: 1. CMOS output 2. TTL input compatible 3. CMOS input (see Table 8 for symbol definitions)
DATA2 (2) (Input)
VH
VTT
VL
tIDS tIDH SCLK (2)
VH
tSCH
tSCP
VTT
VL
tCSSM CS (2)
VH
tSCL
tCSH
VTT
VL
tODD DATA1 (1) (Output)
tOHZ
VCT
Figure 14 - Motorola Serial Microport Timing
Notes: 1. CMOS output 2. TTL input compatible 3. CMOS input (see Table 8 for symbol definitions)
16
Advance Information
Register Summary
Address: 00h R/W Power Up Reset 00h RESET AHAGCNBBYPASS MUTE_S MUTE_R LIMIT
MT9315
Main Control Register (MC)
7
MSB
LIMIT
6 MUTE_R 5 MUTE_S
4 BYPASS 3
NB-
2
AGC-
1
AH-
0 RESET
LSB
When high, the power initialization routine is executed presetting all registers to default values. This bit automatically clears itself to'0' when reset is complete. When high, the Howling detector is disabled and when low the Howling detector is enabled. When high, AGC is disabled and when low AGC is enabled When high, Narrowband signal detectors in Rin and Sin paths are disabled and when low the signal detectors are enabled When high, the Send and Receive paths are transparently by-passed from input to output and when low the Send and Receive paths are not bypassed When high, the Sin path is muted to quite code (after the NLP) and when low the Sin path is not muted When high, the Rin path is muted to quite code (after the NLP) and when low the Rin path is not muted When high, the 2-bit shift mode is enabled in conjunction with bit 7 of LEC register and when low 2-bit shift mode is disabled
Address: 21h R/W Power Up Reset 00h ECBY ADAPTHCLR HPFINJNLPASCP-
Acoustic Echo Canceller Control Register (AEC)
7
MSB
P-
6
ASC-
5
NLP-
4
INJ-
3
HPF-
2 HCLR
1
ADAPT-
0 ECBY
LSB
When high, the Echo estimate from the filter is not substracted from the Send path, when low the estimate is substracted When high, the Echo canceller adaptation is disabled and when low the adaptation is enabled When high, Adaptive filter coefficients are cleared and when low the filter coefficients are not cleared When high, Offset nulling filter is bypassed in the Sin/Sout path and when low the Offset nulling filter in not bypassed When high, the Noise filtering process is disabled in the NLP and when low the Noise filtering process is enabled When high, the Non Linear Processor is disabled in the Sin/Sout path and when low the NLP is enabled When high, the Internal Adaptation speed control is disabled and when low the Adaptation speed is enabled When high, the Exponential weighting function for the adaptive filter is disabled and when low the weighting function is enabled
Address: 01h R/W Power Up Reset 00h ECBY ADAPTHCLR HPFINJNLPASCSHFT
Line Echo Canceller Control Register (LEC)
MSB
7 SHFT
6
ASC-
5
NLP-
4
INJ-
3
HPF-
2 HCLR
1
ADAPT-
0 ECBY
LSB
When high, the Echo estimate from the filter is not substracted from the Send path, when low the estimate is substracted When high, the Echo canceller adaptation is disabled and when low the adaptation is enabled When high, Adaptive filter coefficients are cleared and when low the filter coefficients are not cleared When high, Offset nulling filter is bypassed in the Rin/Rout path and when low the Offset nulling filter in not bypassed When high, the Noise filtering process is disabled in the NLP and when low the Noise filtering process is enabled When high, the Non Linear Processor is disabled in the Rin/Rout path and when low the NLP is enabled When high, the Internal Adaptation speed control is disabled and when low the Adaptation speed is enabled when high the 16-bit linear mode, inputs Sin, Rin, are shift right by 2 and outputs Sout, Rout are shift left by 2. This bit is ignored when 16-bit linear mode is not selected in both ports. This bit is also ignored if bit 7 of MC register is set to zero
17
MT9315
Address: 22h Read Power Up Reset 00h NBS NB DT NLPDC HWLNG ACMUND -
Advance Information
Acoustic Echo Canceller Status Register (ASR) (* Do not write to this register)
7
MSB
-
6 ACMUND 5 HWLNG
4
-
3
NLPDC
2
DT
1
NB
0 NBS
LSB
When high, the Narrowband signal has been detected in the Sin/Sout path and when low, the Narrowband signal has not been detected in the Sin/Sout path LOGICAL OR of the status bit NBS + NBR from LSR Register When high the Double Talk is detected and when low, the Double talk is not detected When high, the NLP is activated and when low the NLP is not activated RESERVED. When high, Howling is occurring in the loop and when low, no Howling is detected When high, No active signal in the Rin/Rout path RESERVED.
Address: 02h Read Power Up Reset 00h NBR NB DT NLPC -RESERVED. . -
Line Echo Canceller Status Register (LSR) (* Do not write to this register)
6
-
5
-
4
-
3
NLPC
2
DT
1
NB
0
NBR
7
detected in the Rin path This bit indicates a LOGICAL-OR of Stattus bits NBR + NBS ( from ASR Register) When high, double-talk is detected and when low double-talk is not detected When high, NLP is actiivated and when low NLP is not activated
LSB
When MSB high, a narrowband signal has been detected in the Receive (Rin) path. When low no narrowband signal is not
Address: 20h R/W Power Up Reset 6Dh G0 G1 G2 G3 RESERVED
Receive Gain Control Register (RGC)
7
MSB
-
6
-
5
-
4
-
3
G3
2
G2
1
G1
0
GO
LSB
User Gain Control on the Rin/Rout path (Tolerance of gains: +/- 0.15 dB). The hexadecimal number represents G3 to G0 value in the table below.
Gain Values for Receive Gain Control Register Bit G3 to G0 (RGC) 0h 1h 2h 3h -24dB -21dB -18dB -15dB 4h 5h 6h 7h -12dB -9 dB -6 dB -3 dB 8h 9h Ah Bh 0 dB + 3 dB + 6 dB +9 dB Ch Dh Eh Fh +12 dB + 15 dB + 18 dB + 21 dB
18
Advance Information
MT9315
Receive (Rin) Peak Detect Register 1
Address: 16h Read Power Up Reset 00h RIPD0 RIPD1 RIPD2 RIPD3 RIPD4 RIPD5 RIPD6 RIPD7
(RIPD1)
1
RIPD1
MSB
7 RIPD 7
6 RIPD 6
5
RIPD5
4
RIPD4
3
RIPD3
2
RIPD2
0
RIPD0
LSB
These peak detector registers allow the user to monitor the receive in signal (Rin) peak level at reference point R1 (see Figure #1). The information is in 16-bit 2's complement linear coded format presented in two 8 bit registers. The high byte is in Register 2 and the low byte is in Register 1.
Address: 17h Read Power Up Reset 00h RIPD8 RIPD9 RIPD10 RIPD11 RIPD12 RIPD13 RIPD14 RIPD15 See Above Description
Receive (Rin) Peak Detect Register 2
MSB
(RIPD2)
1
RIPD9
7 RIPD 15
6 RIPD 5 14
RIPD13
4
RIPD12 3
RIPD11 2
RIPD10
0
RIPD8
LSB
Address: 18h Read Power Up Reset 00h REPD0 REPD1 REPD2 REPD3 REPD4 REPD5 REPD6 REPD7
MSB
Receive (Rin) ERROR Peak Detect Register 1
7 REPD 7 6 REPD 6 5 REPD 5 4 REPD 4 3 REPD 3 2 REPD 2
(REPD1)
1
REPD1
0 REPD 0
LSB
These peak detector registers allow the user to monitor the error signal peak level at reference point R2 (see Figure #1). The information is in 16-bit 2's complement linear coded format presented in two 8 bit registers. The high byte is in Register 2 and the low byte is in Register 1.
19
MT9315
Address: 19h Read Power Up Reset 00h REPD8 REPD9 REPD10 REPD11 REPD12 REPD13 REPD14 REPD15 See above description
Advance Information
Receive (Rin) ERROR Peak Detect Register 2
MSB
(REPD2)
1 REPD 9 0
REPD8
LSB
7 REPD 6 REPD 15 14
5
REPD13
4 REPD 3 REPD11 12
2 REPD 10
Address: 3Ah Read Power Up Reset 00h ROPD0 ROPD1 ROPD2 ROPD3 ROPD4 ROPD5 ROPD6 ROPD7
MSB
Receive (Rout) Peak Detect Register 1
7 ROPD 7 6 ROPD 6 5 ROPD 5 4
ROPD4 3 ROPD3
(ROPD1)
1
ROPD1
2
ROPD2
0 ROPD 0
LSB
These peak detector registers allow the user to monitor the receive out signal (Rout) peak level at reference point R3 (see Figure #1). The information is in 16-bit 2's complement linear coded format presented in two 8 bit registers. The high byte is in Register 2 and the low byte is in Register 1.
Address: 3Bh Read Power Up Reset 00h ROPD8 ROPD9 ROPD10 ROPD11 ROPD12 ROPD13 ROPD14 ROPD15 See Above description
MSB
Receive (Rout) Peak Detect Register 2
7 ROPD 6 5 ROPD14 ROPD13 15
(ROPD2)
1 ROPD 9 0
ROPD8
LSB
4 ROPD 3 ROPD 2 ROPD 11 12 10
20
Advance Information
MT9315
Send (Sin) Peak Detect Register 1
Address: 36h Read Power Up Reset 00h SIPD0 SIPD1 SIPD2 SIPD3 SIPD4 SIPD5 SIPD6 SIPD7
MSB
(SIPD1)
SIPD2
7 SIPD 7
6 SIPD 6
5
SIPD5
4
SIPD4
3
SIPD3
2
1
SIPD1
0
SIPD0
LSB
These peak detector registers allow the user to monitor the receive in signal (Sin) peak level at reference point S1 (see Figure #1). The information is in 16-bit 2's complement linear coded format presented in two 8 bit registers. The high byte is in Register 2 and the low byte is in Register 1.
Address: 37h Read Power Up Reset 00h SIPD8 SIPD9 SIPD10 SIPD11 SIPD12 SIPD13 SIPD14 SIPD15 See above description
MSB
Send (Sin) Peak Detect Register 2
7 SIPD 15 6 SIPD 14 5
SIPD13
(SIPD2)
SIPD10
4
SIPD12 3
SIPD11 2
1
SIPD9
0
SIPD8
LSB
Address: 38h Read Power Up Reset 00h SEPD0 SEPD1 SEPD2 SEPD3 SEPD4 SEPD5 SEPD6 SEPD7
MSB
Send ERROR Peak Detect Register 1
7 SEPD 7 6 SEPD 6 5
SEPD5
(SEPD1)
1
SEPD1
4
SEPD4 3
SEPD3 2
SEPD2
0
SEPD0
LSB
These peak detector registers allow the user to monitor the error signal peak level in the send path at reference point S2 (see Figure #1). The information is in 16-bit 2's complement linear coded format presented in two 8 bit registers. The high byte is in Register 2 and the low byte is in Register 1.
21
MT9315
Address: 39h Read Power Up Reset 00h SEPD8 SEPD9 SEPD10 SEPD11 SEPD12 SEPD13 SEPD14 SEPD15 See Above description
MSB
Advance Information
Send ERROR Peak Detect Register 2
7 SEPD 6 SEPD 15 14 5
SEPD13
(SEPD2)
1 SEPD 9 0
SEPD8
LSB
4 SEPD 3 SEPD11 12
2 SEPD 10
Address: 1Ah Read Power Up Reset 00h SOPD0 SOPD1 SOPD2 SOPD3 SOPD4 SOPD5 SOPD6 SOPD7
Send (Sout) Peak Detect Register 1
MSB
(SOPD1)
1
SOPD1
7 SOPD 7
6 SOPD 6
5 SOPD 5
4 SOPD 4
3 SOPD 3
2
SOPD2
0 SOPD 0
LSB
These peak detector registers allow the user to monitor the Send out signal (Sout) peak level at reference point S3 (see Figure #1). The information is in 16-bit 2's complement linear coded format presented in two 8 bit registers. The high byte is in Register 2 and the low byte is in Register 1.
Address: 1Bh Read Power Up Reset 00h SOPD8 SOPD9 SOPD10 SOPD11 SOPD12 SOPD13 SOPD14 SOPD15 See Above description
MSB
Send (Sout) Peak Detect Register 2
7 SOPD 6 SOPD 15 14 5
SOPD13
(SOPD2)
1 SOPD 9 0
SOPD8
LSB
4 SOPD 3 SOPD11 12
2 SOPD 10
22
Advance Information
MT9315
(A_AS1)
0 A_AS 0
LSB
Address: 3Ch R/W Power Up Reset 00h A_AS0 A_AS1 A_AS2 A_AS3 A_AS4 A_AS5 A_AS6 A_AS7
Acoustic Echo Canceller Adaptation Speed Register 1
MSB
7 A_AS 7
6 A_AS 6
5 A_AS 5
4 A_AS 4
3 A_AS 3
2
A_AS2
1
A_AS1
This register allows the user to program control the adaptation speed of the Acoustic Echo Canceller. This register value changes dynamically when the 'ASC-' bit in the Acoustic Echo Canceller Control Register is low. The 'ASC-' bit must be 1 when this register is under user control. The valid range is from 0000h to 7FFFh. The high byte is in Register 2 and the low byte is in Register 1. Smaller values correspond to slower adaptation speed.
Address: 3Dh R/W Power Up Reset 10h A_AS8 A_AS9 A_AS10 A_AS11 A_AS12 A_AS13 A_AS14 A_AS15
MSB
Acoustic Echo Canceller Adaptation Speed Register 2
7 A_AS 6 A_AS 15 14 5
A_AS13
(A_AS2)
0
A_AS8
LSB
4 A_AS 12
3
A_AS11
2 A_AS 10
1 A_AS 9
See Above description
Address: 1Ch R/W Power Up Reset 00h L_AS0 L_AS1 L_AS2 L_AS3 L_AS4 L_AS5 L_AS6 L_AS7
MSB
Line Echo Canceller Adaptation Speed Register 1
7 L_AS 7 6 L_AS 6 5 L_AS 5 4 L_AS 4 3 L_AS 3 2
L_AS2
(L_AS1)
L_AS1
1
0 L_AS 0
LSB
This register allows the user to program control the adaptation speed of the Line Echo Canceller. This register value changes dynamically when the 'ASC-' bit in the Acoustic Echo Canceller Control Register is low. The 'ASC-' bit must be 1 when this register is under user control. The valid range is from 0000h to 7FFFh. The high byte is in Register 2 and the low byte is in Register 1. Smaller values correspond to slower adaptation speed.
23
MT9315
Address: 1Dh R/W Power Up Reset 08h L_AS8 L_AS9 L_AS10 L_AS11 L_AS12 L_AS13 L_AS14 L_AS15 See Above description
MSB
Advance Information
Line Echo Canceller Adaptation Speed Register 2
7 L_AS 6 L_AS 15 14 5
L_AS13
(L_AS2)
0
L_AS8
LSB
4 L_AS 12
3
L_AS11
2 L_AS 10
1 L_AS 9
Address: 24h R/W Power Up Reset 80h L0 RESERVED
Rout Limiter Register 1 (RL1)
7
MSB
L0
6
-
5
-
4
-
3
-
2
-
1
-
0
LSB
This bit is used in conjunction with Rout Limiter Register 2. (See description below.)
Address: 25h R/W Power Up Reset 3Eh L1 L2 L3 L4 L5 L6 L7 L8
Rout Limiter Register 2 (RL2)
7
MSB
L8
6
L7
5
L6
4
L5
3
L4
2
L3
1
L2
0
L1
LSB
In conjunction with bit 7 (L0) of the above (RL1) register, this register (RL2) allows the user to program the output Limiter threshold value in the Rout path. Default value is (1f40)h which is equal to 3.14dBmo Maximum value is (7FC0 )h = 15 dBmo Minimum value is (0040)h = -38 dBmo
24
Advance Information
MT9315
Sout Limiter Register (SL)
Address: 26h R/W Power Up Reset 3Dh L0 L1 L2 L3 L4 RESERVED
7
MSB
L4
6
L3
5
L2
4
L1
3
L0
2
-
1
-
0
LSB
This register allows the user to program the output Limiter threshold value in the Rout path Default value is (1f40)h which is equal to 3.14dBmo Maximum value is (7F40 )h
Address: 03h Read Power Up Reset 40h
-
Device Revision Code Register (DRC)
7
MSB
DRC2
6
DRC1
5
DRC0
4
-
3
-
2
-
1
-
0
-
LSB
RESERVED
DRC0 DRC1 DRC2 Revision code of the device (=02).
25
Package Outlines
3 2 1
E1
E
n-2 n-1 n D A2 L b2 Notes: D1 1) Not to scale 2) Dimensions in inches 3) (Dimensions in millimeters) A C eA e b eB eC
Plastic Dual-In-Line Packages (PDIP) - E Suffix
8-Pin DIM Min A A2 b b2 C D D1 E E1 e eA L eB eC
0 0.115 (2.92) 0.014 (0.356) 0.045 (1.14) 0.008 (0.203) 0.355 (9.02) 0.005 (0.13) 0.300 (7.62) 0.240 (6.10) 0.325 (8.26) 0.280 (7.11)
16-Pin Plastic Max Min Max
0.210 (5.33) 0.115 (2.92) 0.014 (0.356) 0.045 (1.14) 0.008 (0.203) 0.780 (19.81) 0.005 (0.13) 0.300 (7.62) 0.240 (6.10) 0.325 (8.26) 0.280 (7.11) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.014(0.356) 0.800 (20.32)
18-Pin Plastic Min Max
0.210 (5.33) 0.115 (2.92) 0.014 (0.356) 0.045 (1.14) 0.008 (0.203) 0.880 (22.35) 0.005 (0.13) 0.300 (7.62) 0.240 (6.10) 0.325 (8.26) 0.280 (7.11) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.014 (0.356) 0.920 (23.37)
20-Pin Plastic Min Max
0.210 (5.33) 0.115 (2.92) 0.014 (0.356) 0.045 (1.14) 0.008 (0.203) 0.980 (24.89) 0.005 (0.13) 0.300 (7.62) 0.240 (6.10) 0.325 (8.26) 0.280 (7.11) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.014 (0.356) 1.060 (26.9)
Plastic
0.210 (5.33) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.014 (0.356) 0.400 (10.16)
0.100 BSC (2.54) 0.300 BSC (7.62) 0.115 (2.92) 0.150 (3.81) 0.430 (10.92) 0.060 (1.52)
0.100 BSC (2.54) 0.300 BSC (7.62) 0.115 (2.92) 0.150 (3.81) 0.430 (10.92) 0 0.060 (1.52)
0.100 BSC (2.54) 0.300 BSC (7.62) 0.115 (2.92) 0.150 (3.81) 0.430 (10.92) 0 0.060 (1.52)
0.100 BSC (2.54) 0.300 BSC (7.62) 0.115 (2.92) 0.150 (3.81) 0.430 (10.92) 0 0.060 (1.52)
NOTE: Controlling dimensions in parenthesis ( ) are in millimeters.
General-8
Package Outlines
3 2 1
E1
E
n-2 n-1 n D A2 L b2 Notes: D1 1) Not to scale 2) Dimensions in inches 3) (Dimensions in millimeters)
A C eA
e b
eB
Plastic Dual-In-Line Packages (PDIP) - E Suffix
22-Pin DIM Min A A2 b b2 C D D1 E E E1 E1 e eA eA eB L
0.115 (2.93) 0.160 (4.06) 15 0.100 BSC (2.54) 0.400 BSC (10.16) 0.330 (8.39) 0.380 (9.65) 0.125 (3.18) 0.014 (0.356) 0.045 (1.15) 0.008 (0.204) 1.050 (26.67) 0.005 (0.13) 0.390 (9.91) 0.430 (10.92)
24-Pin Plastic Max Min Max
0.250 (6.35) 0.125 (3.18) 0.014 (0.356) 0.030 (0.77) 0.008 (0.204) 1.150 (29.3) 0.005 (0.13) 0.600 (15.24) 0.290 (7.37) 0.485 (12.32) 0.246 (6.25) 0.670 (17.02) .330 (8.38) 0.580 (14.73) 0.254 (6.45) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.015 (0.381) 1.290 (32.7)
28-Pin Plastic Min Max
0.250 (6.35) 0.125 (3.18) 0.014 (0.356) 0.030 (0.77) 0.008 (0.204) 1.380 (35.1) 0.005 (0.13) 0.600 (15.24) 0.670 (17.02) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.015 (0.381) 1.565 (39.7)
40-Pin Plastic Min Max
0.250 (6.35) 0.125 (3.18) 0.014 (0.356) 0.030 (0.77) 0.008 (0.204) 1.980 (50.3) 0.005 (0.13) 0.600 (15.24) 0.670 (17.02) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.015 (0.381) 2.095 (53.2)
Plastic
0.210 (5.33) 0.195 (4.95) 0.022 (0.558) 0.070 (1.77) 0.015 (0.381) 1.120 (28.44)
0.485 (12.32)
0.580 (14.73)
0.485 (12.32)
0.580 (14.73)
0.100 BSC (2.54) 0.600 BSC (15.24) 0.300 BSC (7.62) 0.430 (10.92) 0.115 (2.93) 0.200 (5.08) 15
0.100 BSC (2.54) 0.600 BSC (15.24)
0.100 BSC (2.54) 0.600 BSC (15.24)
0.115 (2.93)
0.200 (5.08) 15
0.115 (2.93)
0.200 (5.08) 15
Shaded areas for 300 Mil Body Width 24 PDIP only
Package Outlines
F
A G
D1 D
D2
H E E1 e: (lead coplanarity) A1 I E2 Notes: 1) Not to scale 2) Dimensions in inches 3) (Dimensions in millimeters) 4) For D & E add for allowable Mold Protrusion 0.010"
20-Pin
Dim
28-Pin Min
0.165 (4.20) 0.090 (2.29) 0.485 (12.32)
44-Pin Min
0.165 (4.20) 0.090 (2.29) 0.685 (17.40)
68-Pin Min
0.165 (4.20) 0.090 (2.29) 0.985 (25.02)
84-Pin Min
0.165 (4.20) 0.090 (2.29) 1.185 (30.10)
Min
A A1 D/E D1/E1 D2/E2 e F G H I
0.165 (4.20) 0.090 (2.29) 0.385 (9.78) 0.350 (8.890) 0.290 (7.37) 0 0.026 (0.661) 0.013 (0.331)
Max
0.180 (4.57) 0.120 (3.04) 0.395 (10.03)
Max
0.180 (4.57) 0.120 (3.04) 0.495 (12.57)
Max
0.180 (4.57) 0.120 (3.04) 0.695 (17.65)
Max
0.200 (5.08) 0.130 (3.30) 0.995 (25.27)
Max
0.200 (5.08) 0.130 (3.30) 1.195 (30.35)
0.356 0.450 0.456 0.650 0.656 0.950 0.958 1.150 1.158 (9.042) (11.430) (11.582) (16.510) (16.662) (24.130) (24.333) (29.210) (29.413) 0.330 (8.38) 0.004 0.032 (0.812) 0.021 (0.533) 0.390 (9.91) 0 0.026 (0.661) 0.013 (0.331) 0.430 (10.92) 0.004 0.032 (0.812) 0.021 (0.533) 0.590 (14.99) 0 0.026 (0.661) 0.013 (0.331) 0.630 (16.00) 0.004 0.032 (0.812) 0.021 (0.533) 0.890 (22.61) 0 0.026 (0.661) 0.013 (0.331) 0.930 (23.62) 0.004 0.032 (0.812) 0.021 (0.533) 1.090 (27.69) 0 0.026 (0.661) 0.013 (0.331) 1.130 (28.70) 0.004 0.032 (0.812) 0.021 (0.533)
0.050 BSC (1.27 BSC) 0.020 (0.51)
0.050 BSC (1.27 BSC) 0.020 (0.51)
0.050 BSC (1.27 BSC) 0.020 (0.51)
0.050 BSC (1.27 BSC) 0.020 (0.51)
0.050 BSC (1.27 BSC) 0.020 (0.51)
Plastic J-Lead Chip Carrier - P-Suffix
General-10
For more information about all Zarlink products visit our Web Site at
www.zarlink.com
Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries (collectively "Zarlink") is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by Zarlink or licensed from third parties by Zarlink, whatsoever. Purchasers of products are also hereby notified that the use of product in certain ways or in combination with Zarlink, or non-Zarlink furnished goods or services may infringe patents or other intellectual property rights owned by Zarlink. This publication is issued to provide information only and (unless agreed by Zarlink in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to Zarlink's conditions of sale which are available on request.
Purchase of Zarlink's I2C components conveys a licence under the Philips I2C Patent rights to use these components in and I2C System, provided that the system conforms to the I2C Standard Specification as defined by Philips. Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc. Copyright Zarlink Semiconductor Inc. All Rights Reserved.
TECHNICAL DOCUMENTATION - NOT FOR RESALE

▲Up To Search▲

Price & Availability of MT9315

	To Download MT9315 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .