Table 20. Multiplexed Pin Configuration Options (Continued)
Signal You Want Signals You Give Up How to Configure the Signal You Want on the Pin
Pin #
V2
MCEL_B1
GPIO31, STRB
GPIO_CS13
GPIO_CS14
GPIO15
Write CSC index 39h[1–0] to 01.
Set CSC index 39h[5].
PCMA_VCC1
PCMA_VPP11
PCMA_VPP21
PCMB_VCC1
PCMB_VPP11
PCMB_VPP21
RDY_B1
V16
W16
Y15
V15
W15
Y14
W2
M2
Set CSC index 39h[5].
Set CSC index 39h[5].
GPIO16
Set CSC index 39h[6].
GPIO17
Set CSC index 39h[6].
GPIO18
Set CSC index 39h[6].
GPIO26, PE
BNDSCN_TDO
GPIO28, INIT
BNDSCN_TDI
GPIO29, SLCTIN
GPIO23, SLCT
Write CSC index 39h[1–0] to 01.
Pull the BNDSCN_EN pin Low.
Write CSC index 39h[1–0] to 01.
Pull the BNDSCN_EN pin Low.
Write CSC index 39h[1–0] to 01.
Write CSC index 39h[1–0] to 01.
REG_A1
REG_B1
Y2
RST_A1
R1
RST_B1
W3
U4
WP_B1
LCD Graphics Controller (ÉlanSC400 Microcontroller Only)
FRM1
VL_LCLK
VL_BE1
VL_RST
VL_ADS
VL_W/R
VL_M/IO
VL_LRDY
VL_D/C
Enable the graphics controller by setting CSC index DDh[2].
E19
E20
B20
C19
D18
C20
D19
E18
F17
D20
A19
A20
F18
F19
LC1
LCDD01
LCDD11
LCDD21
LCDD31
LCDD41
LCDD51
LCDD61
LCDD71
LVDD1
LVEE1
M1
VL_LDEV
VL_BE3
VL_BLAST
VL_BRDY
VL_BE2
VL_BE0
SCK1
Boundary Scan Interface
BDNSCN_TCK
BNDSCN_TDI
BNDSCN_TDO
BNDSCN_TMS
Miscellaneous
BL0
MCEL_A 1
Pull the BNDSCN_EN signal High.
P2
R1
M2
N3
RST_A1
REG_A1
MCEH_A 1
CLK_IO
Write CSC index 38h[7–6] to 01.
W14
W14
CLK_IO
BL0
Write CSC index 38h[7–6] to 10 to enable CLK_IO as an output or to
11 to enable CLK_IO as a timer clock input.
Notes:
1. This signal is not supported on the ÉlanSC410 microcontroller.
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
73
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