Renesas SH7781 User Manual
Page 383
11. Local Bus State Controller (LBSC)
Rev.1.00 Jan. 10, 2008 Page 353 of 1658
REJ09B0261-0100
Pin Name
Function
I/O
Description
MODE11,
MODE12
Bus Mode
Switching
I
Signals for switching buses: local bus, PCI bus
or DU bus
Bus modes for D63 to D32 and
WE7 to WE4 are
switched at a power-on reset by the
PRESET
pin
MODE11: Multiplexed with SCIF4_SCK (SCIF
input/output), FD3 (FLCTL
input/output), Port N0 (GPIO output)
MODE12: Multiplexed with
DACK3 (DMAC0
output),
CE2B (LBSC output), Port L0
(GPIO output)
DACK0*
3
DMAC0
Acknowledge
Signal
O
Data acknowledge in DMAC channel 0
Multiplexed with Port K1 (GPIO input/output)
DACK1*
3
DMAC1
Acknowledge
Signal
O
Data acknowledge in DMAC channel 1
Multiplexed with Port K0 (GPIO input/output)
DACK2*
3
DMAC2
Acknowledge
Signal
O
Data acknowledge in DMAC channel 2
Multiplexed with SCIF2_TXD (SCIF output),
MMCCMD (MMCIF input/output), SIOF_TXD
(SIOF output) and Port K5 (GPIO input/output)
DACK3*
3
DMAC3
Acknowledge
Signal
O
Data acknowledge in DMAC channel 3
Multiplexed with SCIF2_SCK (SCIF
input/output), MMCDAT (MMCIF input/output),
SIOF_SCK (SIOF input/output) and Port K4
(GPIO input/output)
Notes: 1.
CE2A is an output pin when the TYPE bits in CS5BCR are set to B'100.
2.
CE2B is an output pin when the TYPE bits in CS6BCR are set to B'100.
3. The polarity of
DACK0 to DACK3 can be selected by the AL bit in CHCR0 to CHCR3
(the initial value selects active-low). For details, see section 14, Direct Memory Access
Controller (DMAC).