INTELLON CONFIDENTIAL
29
ADVANCE INFORMATION
Rev 8.1
INT5130 Integrated Powerline MAC/PHY Transceiver Technical Data Sheet
AGC Circuitry
The INT5130 receives 10-bit digitized samples from the INT1000 and uses them to adjust the Switched
Gain Amplifier (SGA) gain to maintain optimum signal level at the input of the ADC. The AGC[7:0] control
bus is used to pass a Gain Control Value (GCV) to the SGA. If the AGCENC_N input pin is low, the GCV is
encoded on pins [3:0] of the AGC[7:0] control bus. If the AGCENC_N input pin is high, the GCV is decoded
on pins [7:0] of the AGC[7:0] control bus with pins [7:4] selecting the gain switch setting for the first stage
amplifier and pins [3:0] selecting the gain switch setting for the second stage amplifier.
GCV (AGCENC_N = 0)
AGC[3:0]
GCV (AGCENC_N = 1)
AGC[7:4] AGC[3:0]
Front End Gain
(dB)
Note
0 0 0 0
0 0 0 0
0 0 0 0
OFF
Mute RX during TX mode
0 0 0 1
1 0 0 0
1 0 0 0
0
0 0 1 0
0 1 0 0
1 0 0 0
8
0 0 1 1
0 0 1 0
1 0 0 0
16
0 1 0 0
0 0 0 1
1 0 0 0
24
0 1 0 1
0 0 0 1
0 1 0 0
32
0 1 1 0
0 0 0 1
0 0 1 0
40
0 1 1 1
0 0 0 1
0 0 0 1
48
Table 11: RX Gain Control Values
AGC DC Characteristics
Symbol
Parameter
Conditions
Min
Typical
Max
Unit
VOH
HIGH level output voltage
1
2.1
V
VOL
LOW level output voltage
1
0.9
V
tR
Rise time
1
5
ns
tF
Fall time
1
5
ns
Conditions: 1) VDD = 3.3V, CL = 15pF, RL = 1K
Ω
Table 12: AGC IDC Characteristics
SPI Master Interface
The SPI Master interface gives the system designer the option of providing the INT5130 with the necessary
configuration information from a simple, SPI-controlled E
2PROM as opposed to supplying this information via
PowerPacket MAC management frames (transmitted over the MII interface). The information stored in the
E
2PROM is intended to initialize the INT5130 with specific information that will not be changed throughout its
normal course of operation. For specific features that require real-time control, such as those features found
within the Set Transmit Characteristics MAC management frame, this information must be provided via the MAC
management frames and not from the E
2PROM.
The E
2PROM must be an Atmel AT93C46 programmed in 8-bit mode, or equivalent.
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