Instruction Manual

AT8901M Hardware Description
Page 3 - 13 AT8901M User Guide
3.6 RTM Interface
The use of an RTM is optional. I/O signals from the Base Board are routed to Zone 3 where a
connector mates with the RTM. The RTM connection is compliant to the PICMG 3.0 standard.
For the connection between the Hub Board and the RTM two daughter card connectors with
40 differential pairs are used.
Each AMC Bay has eight (B1) or four (B2) pairs of generic interconnects to the RTM Zone 3
(AMC_B1_P13 to AMC_B1_P20 and AMC_B2_P17 to AMC_B2_P20). One SATA/FC inter-
face for mass storage from each AMC Slot is implemented (STOR0 and STOR1). Also an I2C
IPMI connection is implemented for an intelligent RTM.
The Zone 3 connector has the following pin assignment:
# Active Low Signal
Table 3-12: J30 Pin Assignment
PIN ROW A ROW B ROW C ROW D ROW E ROW F ROW G ROW H
1 N.C. N.C. N.C. N.C. N.C. N.C. STOR0_
RX-
STOR0_
RX+
2 PROD_IO0 PROD_IO1 N.C. N.C. N.C. N.C. STOR0_
TX-
STOR0_
TX+
3 12V 3.3V_SUS SMB_SCL SMB_
SDA
N.C. N.C. STOR1_
RX-
STOR1_
RX+
4 PROD_IO2 PLD_DOUT PLD_CLK PLD_DIN N.C. N.C. STOR1_
TX-
STOR1_
TX+
5 JTAG_TDO TEST_JIG# N.C. PROD_IO
3
N.C. N.C. N.C. N.C.
6 JTAG_TDI 12V N.C. N.C. N.C. 12V N.C. N.C.
7 JTAG_TCK PROD_IO4 N.C. N.C. N.C. N.C. N.C. N.C.
8 JTAG_TMS JTAG_
TRST#
N.C. N.C. N.C. SMB_
ALERT#
N.C. N.C.
9 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
10 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.