– 5-15 –
■
Block Diagram
EB-X400 use the ASC1 port for IrDA interface because serial baud rate of ASC1 is up to 115.2 kbps.
This value is satisfies the IrDA requirement. Otherwise, serial baud rate of ASC0 is up to 921.6 kbps. Thus, EB-X400
will use this interface for serial communication in factory and re-programming software.
5.2.7. Melody IC (U2011)
Melody ringing is generated by Melody IC (U2011). This IC supports generation of up to 16 tones, using the FM synthesizer
principle. The control and data interface to the U2011 is provided by connecting the U2001 to the lower byte of the parallel data
bus. Furthermore a 13 MHz clock output and a IRQ input must be provided.
■
Block Diagram
Figure 5.9. IrDA Block Diagram
Figure 5.10. Melody Block Diagram
PD-BUS
IrDA Support
IrDA Support
ASC1
Controller
ASC0
Controller
Autobaudrate
Block
Pinmux Block
Pinmux Block
Autostart Block
SIM Card IF
Keypad IF
RTC Block
expin
READYQ
ext_S0_dis
hw_wakeup (ECO Block)
S0ASINT
BIU
BIU
RxD
TxD
RxD0
TxD0
RxD1
TxD1
OUT_L
OUT_R
EXT1 (Vibrator)
EXT2 (LED)
To Headset
Z1
Z2
Z3
4.7
4.7
D[0:7]
WR#
RD#
A0
CS#
CLKI
IRQ
RST#
D[0:7]
WR#
RD#
A1
CS4#
CLKSX
IRQ#
GPIO
EPP1
EPN1
EPP2
+
U2011
E-Gold +
(U2001)
8
Ω
Summary of Contents for EB-X400
Page 86: ...12 1 12 LAYOUT DIAGRAMS 12 1 Main Board U2001 ...
Page 87: ...12 2 ...
Page 88: ...12 2 Upper Face PCB 12 3 Green Black Black White ...
Page 89: ...12 3 Hinge PCB 12 4 ...
Page 90: ...12 4 SIM PCB 12 5 ...