Read Panasonic KX-NT680RU-B Service Manual online
9
KX-NT680 Series
4 Technical Descriptions
4.1.
Block Diagram
ASIC_RST
ASIC_CLK
ASIC_ INT
I2C_SCL
I2C_SDA
DDR3
2Gbit
RGMII
DSPG DVF9919
GPIO
Flash
1Gbit
1Gbit
RJ45 CON
To LAN
10/100/1000BASE-T
Ethernet I/F
TXD[3:0]
TCLK
RCTL
RXD[3:0]
RCLK
PHY_nRST
MDC
MDIO
MDIO
TCTL
Audio
DDR IF
+ 12 V
DC IN
DC IN
802.3af
PoE IC
+48V
PDN
DC/DC
Power supply
LDO
+1. 5V
I2C(1)
HEADSET_MIN
HEADSET_SPOUT
Headset
Detect
Voltage
CN
RSTN
+ 10.6 V
Xtal
GPIO
Gigabit Switch
with PHY
(INTEL)
RJ45 CON
To PC
10/100/1000BASE-T
G1
RGMII1
G0
PULSE
Trans
PULSE
Trans
DC/DC
+1. 1V
+3.3V
Handset
HSSPOUT
HSMICIN
CN
+5V
+1. 5V
CLK_OUT
INT
MIC
Speaker
MIP/MIN
SPP/SPN
DC/DC
+3.3V
+3.3V
ASIC
+5V
Xtal
NAND IF
25MHz
+3.3V
USB( 1)
High/OTG
Internal +1.8V
Internal +1. 3V
NT680
Block Diagram
EHS_DET
EHS
EHS_RX
EHS_TX
CN
(Jab
ra
&
Plantronic
s IF
)
+1. 8V
EHS
GPIO
+ 12 V
MICBIAS
MICBIAS
MICBIAS
PCM
UART(1)
VLED
12 MHz
+5V
25 MHz
+3.3V
DSS IF
DSS_DN
DSS_RST
+ 12 V
DSS_DP
BT_DOUT
BT_DIN
BT_SYNC
BT_CLK
BT_U1TX
BT_U1RX
GPIO
USB( 2)
(Full)
SPI(2)
+ 12 V or 10.6V
LCD
LCD_PCLK
LCD_EN
LCD_DE
LCD_HSYNC
LCD_VSYNC
+3.3V
Backlight
PWM0
SDIO
UTX
URX
PC
+ 3.3 V
SPI(1)
GPIO
BT Module
GPIO
DSS
CLK_OUT
UART_Ja
EHS_DET
Tx/Rx_Pl
BT_RST
GPIO
GPIO
UART(2)
LCD
Controller
LCD_B[7:0]
LCD_G[7:0]
LCD_R[7:0]
Converter
4.3inch
Color TFT
LCD
CN
LED+
LED-
Photo -
Coupler
Coupler
KEY
HOOK SW
HOOK_DET
HEAD DET
HEAD_DET
VBUS
+ 3.3 V
CN
AFE
LED
Key matrix
Dinamic 6x8
+ 3V
LED(Static)
Static
GPIO
DCIN0
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
BT
Module
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