ORT8850H AGERE [Agere Systems], ORT8850H Datasheet - Page 75

• Manufacturer Part Number: ORT8850H
• Description: Field-Programmable System Chip (FPSC) Eight-Channel x 850 Mbits/s Backplane Transceiver
• Manufacturer: AGERE [Agere Systems]

Data Sheet
August 2001
Agere Systems Inc.
Pin Information
Table 31. Embedded Core/FPGA Interface Signal Description (continued)
RapidIO Signals (Channel B) (continued)
RapidIO Signals (Channel C)
wrxclk_b_fpga
utxd_b<31:0>
zrxd_b<31:0>
zrxsocviol_b
zrxalnviol_b
rstn_utx_b
csysenb_c
Pin Name
utxtristn_b
zclkstat_b
rstn_rx_b
rstn_rx_c
utxsoc_b
zrxsoc_b
ytristn_b
(continued)
I/O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
Synchronous reset for all memory elements clocked by
WRXCLK_B_FPGA (derived from PLL).
Transmit data bus containing four octets synchronized with the
rising edge of the 60 MHz—146 MHz WUTXCLK_FPGA
(derived from PLL) is clocked into the transmit FIFO within the
RapidIO.
Start of cell originating with the core and synchronized with the
rising edge of WUTXCLK_FPGA into the transmit FIFO. Indi-
cates that the first data word on TXD_B bus includes the first
octet of a new cell in bit positions <31:24>.
Synchronous reset for all memory elements in the
WUTXCLK_FPGA domain.
Output 3-state enable (active-low). When active, the TXD_B,
TXSOC_B, and TXCLK_B LVDS drivers are 3-stated.
3-state override for transmit outputs (active-low). This signal is
ignored during reset, but takes priority over all 3-state control
signals otherwise.
32-bit data from the receive module. The bus contains four
octets and reflects data received via the high-speed RXD_B
data bus.
Indicates the presence of the first octet of a new cell within the
first 32-bit data word on the RXD_B bus in bit positions
<31:24>.
Indicates a minimum cell violation within the receive module.
This signal will transition active-high coincident with RXSOC.
This indicates that the new cell overran the previous cell and
that the previous cell is in violation of the minimum cell size.
Indicates an alignment error. An active state signals RXSOC
was captured on a negative RXCLK edge. This signal will stay
high for a single WRXCLK_B_FPGA cycle coincident with
RXSOC.
Indicates the loss or absence of a clock on the LVDS clock
(RXCLK). After the validation of the absence of the clock, this
signal will stay high for the duration of the absence of the
clock.
Derived from high-speed LVDS clock RXCLK (= RXCLK/2).
System cell processing enable. After reset is released, drive
this signal high when RapidIO is ready to transmit cells. This
signal should be active after all control signals into the
RapidIO are stable.
Synchronous reset for all memory elements clocked by
WRXCLK_C_FPGA (derived from PLL).
Eight-Channel x 850 Mbits/s Backplane Transceiver
Description
ORCA ORT8850 FPSC
75