CS181012-CQZ Cirrus Logic Inc, CS181012-CQZ Datasheet - Page 44

• Manufacturer Part Number: CS181012-CQZ
• Description: IC COBRANET CS181012 144LQFP
• Manufacturer: Cirrus Logic Inc
• Series: CobraNet®r
• Type: Audio Processorr

Specifications of CS181012-CQZ

• Package / Case: 144-LQFP
• Applications: Data Transport
• Mounting Type: Surface Mount
• Mounting Style: SMD/SMT
• Number Of Converters: 8
• Core Size: 32 Bit
• Digital Ic Case Style: LQFP
• No. Of Pins: 144
• Supply Voltage Range: 1.71V To 1.89V
• Operating Temperature Range: 0°C To +70°C
• Filter Terminals: SMD
• Supply Voltage Min: 3.13V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1021 - MODULE COBRANET 4961 CM2 FB598-1020 - MODULE COBRANET 1810 CM2 MT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1025

CobraNet Hardware User’s Manual
Mechanical Drawings and Schematics
9.2
44
CM-2 Schematics
VCC_+3.3
connector
connector.sch
AUX_POWER[0..3]
SSI_DOUT[0..3]
C1
10 uF, X5R, 6.3 Volts
UART_TX_OE
SSI_DIN[0..3]
HADDR[0..3]
WATCHDOG
HDATA[0..7]
MCLK_OUT
UART_TXD
UART_RXD
REFCLK_IN
This linear regulator is used to assure that the +1.8v rail quickly passes
the 0.5v threshold at powerup, thus minimizing power sequencing issues
and making sure that the DSP does not draw excessive power as the
power rails ramp up. This linear regulator is set with Vout=1.22v, so it
is effectively shut off once the switching regulator comes up. Further
testing and characterization of the DSP is require to determine if this
linear regulator is in fact required.
This is a simple switching regulator. It produces
1.8V at >500 mA at about 90% efficency. A simple low drop
out linear regulator would be a cheaper alternative at the
expense of power. A linear regulator would dissapate
about 0.75 watts max, This switching regulator dissapates
about 0.10 watts max.
RSVD[1..5]
MCLK_IN
HRESET#
SSI_CLK
HACK#
MUTE#
HREQ#
HEN#
HDS#
HRW
FS1
4
1
Figure 24. CM-2 RevF Schematic Page 1 of 7
1
2
HRESET#
HEN#
HRW
HDS#
HADDR[0..3]
HDATA[0..7]
HREQ#
HACK#
WATCHDOG
MUTE#
UART_TX_OE
UART_TXD
UART_RXD
MCLK_OUT
MCLK_IN
REFCLK_IN
FS1
SSI_CLK
SSI_DIN[0..3]
SSI_DOUT[0..3]
RSVD[1..5]
AUX_POWER[0..3]
U1
LTC3406-1.8
VIN
RUN
U9
LTC1761
IN
GND
©
Copyright 2005 Cirrus Logic, Inc.
Vout/FB
OUT
BYP
ADJ
SW
core
core.sch
4
3
5
3
5
HRESET#
HEN#
HRW
HDS#
HADDR[0..3]
HDATA[0..7]
HREQ#
HACK#
WATCHDOG
MUTE#
UART_TX_OE
UART_TXD
UART_RXD
MCLK_OUT
MCLK_IN
REFCLK_IN
FS1
SSI_CLK
SSI_DIN[0..3]
SSI_DOUT[0..3]
RSVD[1..5]
AUX_POWER[3..0]
L1
2.2 uH
C45
0.01 uF
GPIO[0..1]
10 uF, X5R, 6.3 Volts
GPIO[0..1]
C2
C3
VCC_+1.8
GPIO[0..1] is not used elsewhere.
These pulldowns are used for test points and
to keep these signals at valid levels.
GPIO0
GPIO1
R1
R2
10K Ohm
DS651UM23
Version 2.3
GND