參數(shù)資料
型號(hào): PDI1394P25BY
廠商: NXP SEMICONDUCTORS
元件分類: 網(wǎng)絡(luò)接口
英文描述: 1-port 400 Mbps physical layer interface
中文描述: DATACOM, INTERFACE CIRCUIT, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-313-2, LQFP-48
文件頁數(shù): 37/42頁
文件大?。?/td> 214K
代理商: PDI1394P25BY
Philips Semiconductors
Product data
PDI1394P25BY
1-port 400 Mbps physical layer interface
2002 Oct 11
37
T
LPS_RESET
T
LPS_DISABLE
CTL0, CTL1
LPS
SV01813
ISO
SYSCLK
D0 – D7
LREQ
(high)
(a)
(c)
(b)
(d)
Figure 23.
Interface Disable, ISO High
The sequence of events for disabling the PHY-LLC interface when it
is in the non-differentiated mode of operation (ISO terminal is high)
is as follows:
1. Normal operation. Interface is operating normally, with LPS
active, SYSCLK active, status and packet data reception and
transmission via the CTL and D lines, and request activity via the
LREQ line.
2. LPS deasserted. The LLC deasserts the LPS signal and, within
1.0 ms, terminates any request or interface bus activity, places
its CTL and D outputs into a high-impedance state, and drives its
LREQ output low.
3. Interface reset. After T
LPS_RESET
time, the PHY determines that
LPS is inactive, terminates any interface bus activity, and drives
its CTL and D outputs low. The PHY-LLC interface is now in the
reset state.
4. Interface disabled. If the LPS signal remain inactive for
T
LPS_DISABLE
time, the PHY terminates SYSCLK activity by
driving the SYSCLK output low. The PHY-LLC interface is now in
the disabled state.
After the interface has been reset, or reset and then disabled, the
interface is initialized and restored to normal operation when LPS is
reasserted by the LLC. The timing for interface initialization is shown
in Figure 24 and Figure 25.
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