Read Panasonic KX-MB283RU / KX-MB783RU (serv.man3) Service Manual Supplement online
13
KX-MB283RU/KX-MB783RU
3.2.2.
LAN SECTION
[Changed from original section “12.3.23. LAN SECTION”]
IC750 (C1CB00002566 : 3.3V Single Power Supply) Pin Description
Pin No
Pin Name
Type
(1)
Pin Function
1
GND
Gnd
Ground
2
VDDPLL_1.8
P
1.8V analog VDD
3
VDDA_3.3
P
3.3V analog VDD
4
RX-
I/O
Physical receive or transmit signal (- differential)
5
RX+
I/O
Physical receive or transmit signal (+ differential)
6
TX-
I/O
Physical transmit or receive signal (- differential)
7
TX+
I/O
Physical transmit or receive signal (+ differential)
8
XO
O
Crystal feedback
This pin is used only in MII mode when a 25 MHz crystal is used.
This pin is a no connect if oscillator or external clock source is used, or
if RMII mode is selected.
This pin is used only in MII mode when a 25 MHz crystal is used.
This pin is a no connect if oscillator or external clock source is used, or
if RMII mode is selected.
9
XI /
REFCLK
I
Crystal / Oscillator / External Clock Input
MII Mode:
MII Mode:
25MHz +/-50ppm (crystal, oscillator, or external clock)
RMII Mode:
50MHz +/-50ppm (oscillator, or external clock only)
10
REXT
I/O
Set physical transmit output current
Connect a 6.49K
Connect a 6.49K
Ω resistor in parallel with a 100pF capacitor to ground
on this pin. See KSZ8041NL reference schematics.
11
MDIO
I/O
Management lnterface (MII) Data I/O
This pin requires an external 4.7K
This pin requires an external 4.7K
Ω pull-up resistor.
12
MDC
I
Management Interface (MII) Clock Input
This pin is synchronous to the MDIO data interface.
This pin is synchronous to the MDIO data interface.
13
RXD3 /
PHYAD0
Ipu/O
MII Mode:
Config Mode:
Config Mode:
Receive Data Output[3]
(2)
/
The pull-up/pull-down value is latched as PHYADDR[0]
during power-up / reset. See “Strapping Options” sec-
tion for details."
during power-up / reset. See “Strapping Options” sec-
tion for details."
14
RXD2 /
PHYAD1
Ipd/O
MII Mode:
Config Mode:
Config Mode:
Receive Data Output[2]
(2)
/
The pull-up/pull-down value is latched as PHYADDR[1]
during power-up / reset. See “Strapping Options” sec-
tion for details."
during power-up / reset. See “Strapping Options” sec-
tion for details."
15
RXD1 /
RXD[1] /
PHYAD2
Ipd/O
MII Mode:
Receive Data Output[1]
(2)
/
RMII Mode:
Receive Data Output[1]
(3)
/
Config Mode:
The pull-up/pull-down value is latched as PHYADDR[2]
during power-up / reset. See “Strapping Options” sec-
tion for details."
during power-up / reset. See “Strapping Options” sec-
tion for details."
16
RXD0 /
RXD[0] /
DUPLEX
Ipu/O
MII Mode:
Receive Data Output[0]
(2)
/
RMII Mode:
Receive Data Output[0]
(3)
/
Config Mode:
Latched as DUPLEX (register 0h, bit 8) during power-
up / reset. See “Strapping Options” section for details."
up / reset. See “Strapping Options” section for details."
17
VDDIO_3.3
P
3.3V digital VDD
18
RXDV /
CRSDV /
CONFIG2
Ipd/O
MII Mode:
Receive Data Valid Output /
RMII Mode:
Carrier Sense/Receive Data Valid Output /
Config Mode:
The pull-up/pull-down value is latched as CONFIG2
during power-up / reset. See “Strapping Options” sec-
tion for details."
during power-up / reset. See “Strapping Options” sec-
tion for details."
19
RXC
O
MII Mode:
Receive Clock Output
20
RXER /
RX_ER /
ISO
Ipd/O
MII Mode:
Receive Error Output /
RMII Mode:
Receive Error Output /
Config Mode:
The pull-up/pull-down value is latched as ISOLATE dur-
ing power-up / reset. See “Strapping Options” section
for details."
ing power-up / reset. See “Strapping Options” section
for details."
21
INTRP
Opu
Interrupt Output: Programmable Interrupt Output
Register 1Bh is the Interrupt Control/Status Register for programming
the interrupt conditions and reading the interrupt status. Register 1Fh bit
9 sets the interrupt output to active low (default) or active high.
Register 1Bh is the Interrupt Control/Status Register for programming
the interrupt conditions and reading the interrupt status. Register 1Fh bit
9 sets the interrupt output to active low (default) or active high.
22
TXC
O
MII Mode:
Transmit Clock Output
23
TXEN /
TX_EN
TX_EN
I
MII Mode:
Transmit Enable Input /
RMII Mode:
Transmit Enable Input
24
TXD0 /
TXD[0]
TXD[0]
I
MII Mode:
Transmit Data Input[0]
(4)
/
RMII Mode:
Transmit Data Input[0]
(5)
25
TXD1 /
TXD[1]
TXD[1]
I
MII Mode:
Transmit Data Input[1]
(4)
/
RMII Mode:
Transmit Data Input[1]
(5)
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