參數(shù)資料
型號(hào)： 21145
廠商： Intel Corp.
英文描述： Phoneline/Ethernet LAN Controller(電話線/以太網(wǎng)LAN控制器)
中文描述： 電話線/以太網(wǎng)控制器（電話線/以太網(wǎng)局域網(wǎng)控制器）
文件頁(yè)數(shù)： 15/50頁(yè)
文件大?。?/td> 624K
代理商： 21145
21145
Preliminary
Datasheet
9
int_l
O/D
21
15
Interrupt request asserts when one of the appropriate bits
of CSR5 sets and causes an interrupt, provided that the
corresponding mask bit in CSR7 is not asserted.
Interrupt request deasserts by writing a 1 into the
appropriate CSR5 bit.
If more than one interrupt bit is asserted in CSR5 and the
host does not clear all input bits, the 21145 deasserts int_l
for one cycle to support edge-triggered systems.
iref
I
132
108
Current reference input for the analog phase-locked loop
logic.
irdy_l
I/O
60
51
Initiator ready indicates the bus master’s ability to
complete the current data phase of the transaction.
A data phase is completed on any rising edge of the clock
when both irdy_l and target ready trdy_l are asserted.
Wait cycles are inserted until both irdy_l and trdy_l are
asserted together.
When the 21145 is the bus master, it asserts irdy_l during
write operations to indicate that valid data is present on
the 32-bit ad lines. During read operations, the 21145
asserts irdy_l to indicate that it is ready to accept data.
mdm_a<4:0>
O
120, 121,
122, 142,
143
NA
Modem address lines. Address lines that are not needed
in order to access the modem should be left
unconnected. For example, if the modem chipset has only
8 registers, mdm_a<4:3> should be left unconnected.
mdm_chip_sel
O
119
NA
Modem chip select. This pin is active low.
mdm_int
I
144
NA
Modem interrupt line. When asserted, the 21145 asserts
the int_l pin. This pin is active high. It must be connected
to a pull-down resistor.
mdm_pwr_down
O
79
NA
Modem power down. This pin is asserted when the
modem function is in D3 power state. It can be used by
the modem chipset power control. The polarity of this pin
is determined by the Func1_HwOptions<5> bit in the
serial ROM.
mdm_ring_ind
I
18
NA
Modem ring indicator. The assertion of this pin affects the
assertion of the wake pin.
The polarity of this pin is determined by the
Func1_HwOptions<4> bit in the serial ROM. This pin
must not be left floating.
mdm_rst
O
70
NA
Modem reset. This pin is asserted for 15
μ
s from the end
of the 21145’s power-up reset pulse, and on moving from
the D3 to the D0 power state.
mdm_spkr_en
O
65
NA
Modem speaker enable. This pin reflects the Audio
enable bits of the modem function Status Changed
registers.
If the Func1_HwOptions<7> bit in the serial ROM is set,
the value of the FEMR<5> is driven on the
MDM_SPKR_EN pin.
If the Func1_HwOptions<7> is cleared, the value of
FEMR<6> is driven on the MDM_SPKR_EN pin.
Table 1. Functional Description of 21145 Signals (Sheet 4 of 8)
Signal
Type
Pin
Number,
176-pin
Pin
Number,
144-pin
Description
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