Panasonic EB-GD93, Technical Manual

Page: 29 / 46

BASEBAND OVERVIEW
MCUK001001G8 Section 6 Issue 1
Technical Guide – 25 – Revision 0
6.12. Accessory ASIC
6.12.1. General Information
Figure 6.7: Accessory ASIC (U604)
The Accessory ASIC (U604) consists of the following:
• LED drivers
• BUZZER driver
• Level shifter for UART interface
• Accessory control I/O lines
• Audio drives
6.12.2. Registers
The Accessory ASIC is controlled by setting registers through the Hercules UART interface.
The Control block contains four registers accessed via the serial interface.
R0, R1 and R2 are 8-bit write only registers
R3 is an 8-bit read-only register
Serial Interface bit Bit function R0 Bit function R1 Bit function R2 Bit function R3
R/W 0 0 0 1
A1 0 0 1 1
A0 0 1 0 1
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
D7 PAGING_LED Not used AUDIO_ON SENSE0
BACKLIGHT
OMEGA (part)
HEADSET
JACK
ACCESSORY
CONNECTOR
VBAT
RX_AUDIO
TX_AUDIO
UART
Modem
PWT
PWL
uWIRE I/F
I/O
CTLR
LED
DRIVER
DTHF
DRIVER
PHF
DRIVER
UART
I/F
PATH
CTRL
SERIAL_UP
SERIAL_DN
RTS CTS
DTR/DATA_MODE2
ACC. I/F
ACC_PWR
AUDIO_ON
ACC. ASIC
nACC_SENSE
DATA_MODE1
RTC IC
(not GD52)
U604
U602
10206-1