B&B Electronics RS-232 to Ethernet Converter ES1A Especificaciones Pagina 27
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Si3216
Rev. 1.0 27
Not Recommended
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2. Functional Description
The ProSLIC is a single, low-voltage CMOS device that
provides all SLIC, codec, DTMF detection, and signal
generation functions needed for a complete analog
telephone interface. The ProSLIC performs all battery,
overvoltage, ringing, supervision, codec, hybrid, and
test (BORSCHT) functions. The Si3216 supports
wideband (50 Hz–7 kHz) and narrowband (200 Hz–
3.4 kHz) audio codec modes to provide an expanded
audio band at a 16 kHz sample rate for enhanced audio
quality as well as standard telephony audio
compatibility. The Si3216 is ideal for Customer Premise
Equipment (CPE) where enhanced audio quality is
required.
Unlike most monolithic SLICs, the ProSLIC does not
require externally-supplied, high-voltage battery
supplies. Instead, it generates all necessary battery
voltages from a positive dc supply using its own dc-dc
converter controller. Two fully-programmable tone
generators can produce DTMF tones, phase continuous
FSK (caller ID) signaling, and call progress tones. Pulse
metering signal generation is also integrated. The
Si3201 linefeed interface IC performs all high-voltage
functions. As an option, the Si3201 can be replaced with
low-cost discrete components.
The linefeed provides programmable on-hook voltage,
programmable off-hook loop current, reverse battery
operation, loop or ground start operation, and on-hook
transmission ringing voltage. Loop current and voltage
are continuously monitored using an integrated A/D
converter. Balanced 5 REN ringing with or without a
programmable dc offset is integrated. The available
offset, frequency, waveshape, and cadence options are
designed to ring the widest variety of terminal devices
and to reduce external controller requirements.
A complete audio transmit and receive path is
integrated, including ac impedance and hybrid gain.
These features are software-programmable, allowing
for a single hardware design to meet global
requirements. Digital voice data transfer occurs over a
standard PCM bus. Control data is transferred using a
standard SPI. The device is available in a 38-pin QFN or
TSSOP.
2.1. Linefeed Interface
The ProSLIC’s linefeed interface offers a rich set of
features and programmable flexibility to meet the
broadest application requirements. The dc linefeed
characteristics are software programmable; key current,
voltage, and power measurements are acquired in real
time and provided in software registers.
2.1.1. DC Feed Characteristics
The ProSLIC has programmable constant voltage and
constant current zones as depicted in Figure 16. Open
circuit TIP-to-RING voltage (V
OC
) defines the constant
voltage zone and is programmable from 0 V to 94.5 V in
1.5 V steps. The loop current limit (I
LIM
) defines the
constant current zone and is programmable from 20 mA
to 41 mA in 3 mA steps. The ProSLIC has an inherent
dc output resistance (R
O
) of 160 .
Figure 16. Simplified DC Current/Voltage
Linefeed Characteristic
The TIP-to-RING voltage (V
OC
) is offset from ground by
a programmable voltage (V
CM
) to provide voltage
headroom to the positive-most terminal (TIP in forward
polarity states and RING in reverse polarity states) for
carrying audio signals. Table 21 summarizes the
parameters to be initialized before entering an Active
state.
Table 21. Programmable Ranges of DC
Linefeed Characteristics
Parameter Programmable
Range
Default
Value
Register
Bits
Location*
I
LIM
20 to 41 mA 20 mA ILIM[2:0] Direct
Register 71
V
OC
0 to 94.5 V 48 V VOC[5:0] Direct
Register 72
V
CM
0 to 94.5 V 3 V VCM[5:0] Direct
Register 73
*Note: The ProSLIC uses registers that are both directly
and indirectly mapped. A “direct” register is one that
is mapped directly.
V
(TIP-RING)
(V)
V
OC
Constant
Voltage
Zone
R
O
=160 Constant Current
Zone
I
LIM
I
LOOP
(mA)
- Features 1
- Applications 1
- Description 1
- Functional Block Diagram 1
- 2 Rev. 1.0 2
- TABLE OF CONTENTS 3
- 1. Electrical Specifications 4
- 8 Rev. 1.0 8
- Rev. 1.0 11 11
- 12 Rev. 1.0 12
- Rev. 1.0 13 13
- 14 Rev. 1.0 14
- Parameter 17
- Symbol Test Condition 17
- Max Unit 17
- Figure 9. SPI Timing Diagram 19
- Si3216(M) 20
- Rev. 1.0 21 21
- Rev. 1.0 23 23
- Component (s) Value Supplier 25
- , 1/10 W, ±5% 25
- 26 Rev. 1.0 26
- 2. Functional Description 27
- 2.1.2. Linefeed Architecture 28
- . The ProSLIC can 28
- Rev. 1.0 29 29
- Parameter Description/ 31
- Resolution Register 31
- Location* 31
- Closure Detection 32
- Switching 33
- 34 Rev. 1.0 34
- Figure 19. V 35
- in the Forward Active State 35
- 2.3. Tone Generation 36
- Tone Generator 1 38
- Tone Generator 2 38
- 2.4. Ringing Generation 39
- 2.4.2. Sinusoidal Ringing 40
- 2.4.3. Trapezoidal Ringing 40
- Location 40
- T=1/freq 41
- Figure 23. Ring Trip Detector 42
- 2.5. Audio Path 43
- 44 Rev. 1.0 44
- Rev. 1.0 45 45
- 2.7. Clock Generation 46
- 2.8. Interrupt Logic 46
- Rev. 1.0 47 47
- 48 Rev. 1.0 48
- 2.10. PCM Interface 49
- 50 Rev. 1.0 50
- Rev. 1.0 51 51
- 3. Control Registers 52
- Rev. 1.0 53 53
- 54 Rev. 1.0 54
- Rev. 1.0 55 55
- CALM1 CALM2 CALDAC CALADC 55
- 56 Rev. 1.0 56
- Rev. 1.0 57 57
- 58 Rev. 1.0 58
- Rev. 1.0 59 59
- 60 Rev. 1.0 60
- Rev. 1.0 61 61
- 62 Rev. 1.0 62
- Rev. 1.0 63 63
- 64 Rev. 1.0 64
- Rev. 1.0 65 65
- 66 Rev. 1.0 66
- Rev. 1.0 67 67
- 68 Rev. 1.0 68
- Rev. 1.0 69 69
- 70 Rev. 1.0 70
- Rev. 1.0 71 71
- 72 Rev. 1.0 72
- Rev. 1.0 73 73
- 74 Rev. 1.0 74
- Rev. 1.0 75 75
- 76 Rev. 1.0 76
- Rev. 1.0 77 77
- 78 Rev. 1.0 78
- Rev. 1.0 79 79
- 80 Rev. 1.0 80
- Rev. 1.0 81 81
- 82 Rev. 1.0 82
- Rev. 1.0 83 83
- 84 Rev. 1.0 84
- Rev. 1.0 85 85
- 86 Rev. 1.0 86
- Rev. 1.0 87 87
- 88 Rev. 1.0 88
- Rev. 1.0 89 89
- 90 Rev. 1.0 90
- Rev. 1.0 91 91
- 92 Rev. 1.0 92
- Rev. 1.0 93 93
- 94 Rev. 1.0 94
- Rev. 1.0 95 95
- 96 Rev. 1.0 96
- Rev. 1.0 97 97
- 98 Rev. 1.0 98
- Rev. 1.0 99 99
- 100 Rev. 1.0 100
- Rev. 1.0 101 101
- 102 Rev. 1.0 102
- Rev. 1.0 103 103
- 4. Indirect Registers 104
- Rev. 1.0 105 105
- 106 Rev. 1.0 106
- Rev. 1.0 107 107
- 108 Rev. 1.0 108
- Rev. 1.0 109 109
- 5. Pin Descriptions: Si3216 110
- Rev. 1.0 111 111
- 112 Rev. 1.0 112
- 6. Pin Descriptions: Si3201 113
- 7. Ordering Guides 114
- Rev. 1.0 115 115
- 116 Rev. 1.0 116
- Rev. 1.0 117 117
- 118 Rev. 1.0 118
- Rev. 1.0 119 119
- DOCUMENT CHANGE LIST 120
- Rev. 1.0 121 121
- CONTACT INFORMATION 122
- Mouser Electronics 123
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