Specifications

DM562P
V.90 Integrated Data/ Fax/Voice/Speakerphone
Modem Device Single Chip with Memory Built in
Final 33
Version: DM562P-DS-F01
February 02, 2004
DM6588 can not assert PME# from D0. But can
Assert PME# from D3(hot) and D3(cold). Hence the
Ring to PME# circuit must check the power state. If
ring comes at D0 power state, it can not assert
PME#.
When host detect PME# asserted, it will power up
PCI bus and assert RST# to initialize pci modem. At
the same time, it write 1 into PME_En bit or
PME_Status bit to stop PME#.
Before enter D3(hot) state, host must :
Software will enable its use by setting the PME_En
bit in the PMCSR.
5. Write 1 into PME_Status bit to clear previous
PME status
It must continue to assert PME# until software either
clears the PME_En bit or clears the PME_Status bit.
6. Write 1 into PME_En bit to enable PME
function.
Before enter D3(cold) state, host must : 7. Write 3 into Power_state
1. Write 1 into PME_Status bit to clear previous
PME status
When Ring come, Ring to PME# circuit check if
PME_EN=1 and Power_staus <>0. If yes, assert
PME# and set PME_Status=1. 2. Write 1 into PME_En bit to enable PME
function. When host detect PME# asserted, it will re-initialize
pci modem and set Power_State=0 to return D0 state.
At the same time, it write 1 into PME_En bit or
PME_Status bit to stop PME#.
3. Write 3 into Power_state
4. Power off PCI bus.
When Ring comes, Ring to PME# circuit check if
PME_EN=1 and Power_staus <>0. If yes, assert
PME# and set PME_Status=1.
PCI MODEM Board Power Management
TX DSP
Ring
Detector
DM6580
Analog
Front End
SCLK
DIT
DOT
TFS
DIR
DOR
RFS
RXSCLK
CLKIN
TXDCLK
RXDCLK
DAA
RxIN
TxA1
TxA2
Line
Speaker
Driver
RX DSP
SPKR
Microphone
Driver
30.24MHz
PCI Bus
VCC_AUX
PCI to ISA
RI to PME#
VDD : PCI +3.3V power
Vsb : auxilily +3.3V power
VDD
Power on/off
VCC_AUX
Vsb
Power
Switch
VCC = VDD if poweron
VCC = floating if power off
VDD
Micro Control
Unit
DM6588A
TXSCLK*2