参数资料
型号: ZL50408GDC
厂商: CONEXANT SYSTEMS
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA208
封装: 17 X 17 MM, 1.40 MM HEIGHT, MO-192, LBGA-208
文件页数: 58/144页
文件大小: 1779K
代理商: ZL50408GDC
ZL50408
Data Sheet
20
Zarlink Semiconductor Inc.
1.4
Signal Mapping and Internal pull-up/Down Configuration
The ZL50408 Fast Ethernet access ports (0-7) support 3 interface options: RMII, MII & GPSI. The table below
summarizes the interface signals required for each interface and how they relate back to the Pin Symbol name
shown in the “Ball Signal Description Table” on page 14. It also specifies whether the internal pull-up/down resistor
is present for each pin in the specific operating mode.
Notes
:
I – Input
O – Output
U – Pullup
D - Pulldown
Fast Ethernet
Access Ports
Pin Symbol
No
Module
(Bootstrap
TSTOUT9=’1’)
RMII Mode
(ECR4Pn[4:3]='11')
MII Mode
(ECR4Pn[4:3]='01')
GPSI Mode
(ECR4Pn[4:3]='00')
M[7:0]_RXD0
(U)
M[7:0]_RXD0 (I)
M[7:0]_RXD (I)
M[7:0]_RXD1
(U)
M[7:0]_RXD1 (I)
NC (U)
M[7:0]_RXD2
(U)
NC (U)
M[7:0]_RXD2 (I)
NC (U)
M[7:0]_RXD3
(U)
NC (U)
M[7:0]_RXD3 (I)
NC (U)
M[7:0]_TXEN
(O)
M[7:0]_TXEN (O)
M[7:0]_CRS_DV
(U)
M[7:0]_CRS_DV (I)
M[7:0]_DV (I)
M[7:0]_CRS (I)
M[7:0]_TXD0
(O)
M[7:0]_TXD0 (O)
M[7:0]_TXD (O)
M[7:0]_TXD1
(O)
M[7:0]_TXD1 (O)
NC (O)
M[7:0]_TXD2
(O)
NC (O)
M[7:0]_TXD2 (O)
NC (O)
M[7:0]_TXD3
(O)
NC (O)
M[7:0]_TXD3 (O)
NC (O)
M[7:0]_COL
(D)
NC (D)
M[7:0]_COL (I)
M[7:0]_TXCLK
(U)
NC (U)
M[7:0]_TXCLK (IO)
M[7:0]_RXCLK
(U)
NC (U)
M[7:0]_RXCLK (IO)
Table 1 - Signal Mapping In Different Operation Mode
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