User's Manual l MBa57xx UM 0100 l © 2020, TQ-Systems GmbH
Page 16
Power Management and Reset (continued)
Illustration 6:
Block diagram Reset
The MBa57xx provides various options for a complete or partial reset of the assembly.
The following table shows the signals used.
Table 13:
Functions of Reset signals
Signal
Source
Dir. Default
Remark
RESET_TO_TQMA57#
Extension header
I
High
CPU reset
RESET_FROM_TQMA57# TQMa57xx CPU
O
High
Reset signal from CPU (as indicator)
PORZ_FROM_TQMA57# TQMa57xx reset
O
High
CPU hard reset signal (as indicator)
TQMA57_RST_IN#
I
High
See TQMa57xx User’s Manual, push button S8 / FTDI / JTAG
TQMA57_RST_OUT#
TQMa57xx
O
High
See TQMa57xx User’s Manual
Active when AM57 reset is active (Open drain, PU required)
Reset for periphery on carrier board (STKRST#)
USB3.0_HUB_RST#
Port Expander II, D23
PCA9555PW
O
High
Reset for USB3.0 Hub
USB2.0_HUB_RST#
O
High
Reset for USB2.0 Hub
RGMII0_RST#
O
High
Reset for Gbit Ethernet PHY I
RGMII1_RST#
O
High
Reset for Gbit Ethernet PHY II
PR2_MII0_RST#
O
High
Reset for Mbit Ethernet PHY I
PR2_MII1_RST#
O
High
Reset for Mbit Ethernet PHY II
PCIE_RST#
O
High
Reset for PCIe card at X41
SATA_M2_RST#
O
High
Reset for SATA interface at X26
