參數(shù)資料
型號(hào): GCIXP1250-166
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 60/148頁
文件大?。?/td> 1601K
代理商: GCIXP1250-166
Intel
IXP1250 Network Processor
60
Datasheet
Table 27. 32-Bit Unidirectional IX Bus, 1-2 MAC Mode
Transmit Path Signals
Description
GPIO[3:1]
Active high outputs, Transmit Port Select [2:0].
PORTCTL_L[3:2]
Active Low, output.
Transmit Device Selects [1:0].
TXASIS
Active High, output. TXASIS states are output according to values programmed in
the TFIFO Control field. TXASIS state is output coincident with SOP32 signal.
FBE_L[7:4]
Active Low, output, byte enables for FDAT [63:31].
FDAT[63:31]
Active High, output, 32-bit transmit data.
Receive Path Signals
FPS[2:0]
Active High, output.
Receive Port Selects [2:0].
PORTCTL_L[1:0]
Active Low, output.
Receive Device Selects [1:0].
SOP
Active High, input/output. Driven as output when bus remains in No-Select state.
EOP
Active High, input/output. Driven as output when bus remains in No-Select state.
RXFAIL
Active High, input/output, input Receive Error indication from the MAC. Driven as
output when bus remains in No-Select state.
FBE_L[3:0]
Active Low, input/output, input byte enables for FDAT [31:0] from the MAC. Driven
as output when bus remains in No-Select state.
FDAT[31:0]
Active High, input/output, input 32-bit receive data from the MAC. Driven as output
when bus remains in No-Select state.
Control Signals Common to both Transmit/Receive Paths
GPIO[0]
Active Low, output, flow-control for MAC 0.
RDYCTL_L[4
Active Low, output, flow-control for MAC 1.
RDYCTL_L[3:0]
Active Low enable outputs for Transmit or Receive Ready flags.
RDYBUS[7:0]
Active High, input/output, Transmit or Receive Ready flags, and flow control mask
data.
TK_IN
Input, not used, must be pulled High in this mode.
TK_OUT
Output, not used, no connect.
FAST_RX1
Active High, ready input from Fast Port 0, pulldown 10 KOhms if not used.
FAST_RX2
Active High, ready input from Fast Port 1, pulldown 10 KOhms if not used.
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