95
Sirius-PJ1Training
Slide 95
Multi Media (MM) Processing Unit
Power Circuit
IC9005
BD00HC0WEF
3.3V/2A
(
Variable Voltage
)
IC9013
BD00C0AWEF
3.6V/1A
(
Variable Voltage
)
IC9008
MC13892VL
Power
Management
IC
IC9002
NJM2819ADK3-05
5V/2A
(
Fixed Voltage
)
IC9001
NJM2819ADK3-05
5V/2A
(
Fixed Voltage
)
6.2V
1.8V
EN
EN
EN
For RTC
For CPU,
DDR2,
NAND,
etc...
For I/F (USB/LAN)
For USB
5V
(Main
Power)
5V
3.6V
1.2V
1.05V
1.225V
1.8V
3.3V
2.6V
1.8V
1.25V
2.775V
3.15V
5V
3.3V
The MM board operates by +6.2V supplied from POMM2 (70-pin connectors) 1
to 5, 36 to 40 pin. And for RTC, operates on +5V supplied from pins 42, 45, 48.
¾
IC9001: 5V regulator IC (Power supply for USB VBUS(5V))
¾
IC9005: 3.3V regulator IC (Power supply for USB-PHY, USB-HUB, LAN-
PHY)
¾
IC9002: 5V regulator IC (Upstream of IC9013)
¾
IC9013: 3.6V regulator IC (Supply for IC9008)
¾
IC9008: PMIC (Generates required power of the CPU.)
The ON/OFF control of IC9001, IC9002, and IC9013 is performed by the
MM_PWON signal from the MAIN board.
When the MM_PWON signal is "L", the power of the MM board is OFF.
However, 5V for RTC is always ON.
IC9005 and IC9013 are voltage-controlling type regulator ICs, and the output
voltage is set by the external resistance. (IC9005: Set at 3.3V output, IC9013:
Set at 3.6V output)
The Power IC IC9008 is an exclusive power IC for the CPU, 3.6V single power
supply. The power required for the CPU is output following the activation
sequence in the order of power supply start. Also on start-up, it outputs the
RESET signal for the CPU and 32.768KHz clock signal for the CPU boot-up.
