NXP Semiconductors LPC24XX UM10237 - Manual (Page 188)

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User manual Rev. 04 — 26 August 2009 188 of 792
NXP Semiconductors
UM10237
Chapter 9: LPC24XX Pin connect
5.10 Pin Function Select Register 9 (PINSEL9 - 0xE002 C024)
The PINSEL9 register controls the functions of the pins as per the settings listed in
Table 9–142 . The direction control bit in the FIO4DIR register is effective only when the
GPIO function is selected for a pin. For other functions, direction is controlled
automatically.
The bit functions in this register depend on the number of pins of each LPC2400 part. For
the 180-pin LPC2458, see
Table 9–142 . For the 208-pin LPC2460/68/70/78, see
Table 9–143 . LCD functions are available in LPC2470/78 only and are selected in
Table 9–145 .
Table 141. Pin function select register 8 (PINSEL8 - address 0xE002 C020) bit description
PINSEL8 Pin
name
Function
when 00 Function
when 01 Function
when 10 Function
when 11 Reset
value
1:0 P4[0] GPIO Port 4.0 A0 Reserved Reserved 00
3:2 P4[1] GPIO Port 4.1 A1 Reserved Reserved 00
5:4 P4[2] GPIO Port 4.2 A2 Reserved Reserved 00
7:6 P4[3] GPIO Port 4.3 A3 Reserved Reserved 00
9:8 P4[4] GPIO Port 4.4 A4 Reserved Reserved 00
11:10 P4[5] GPIO Port 4.5 A5 Reserved Reserved 00
13:12 P4[6] GPIO Port 4.6 A6 Reserved Reserved 00
15:14 P4[7] GPIO Port 4.7 A7 Reserved Reserved 00
17:16 P4[8] GPIO Port 4.8 A8 Reserved Reserved 00
19:18 P4[9] GPIO Port 4.9 A9 Reserved Reserved 00
21:20 P4[10] GPIO Port 4.10 A10 Reserved Reserved 00
23:22 P4[11] GPIO Port 4.11 A11 Reserved Reserved 00
25:24 P4[12] GPIO Port 4.12 A12 Reserved Reserved 00
27:26 P4[13] GPIO Port 4.13 A13 Reserved Reserved 00
29:28 P4[14] GPIO Port 4.14 A14 Reserved Reserved 00
31:30 P4[15] GPIO Port 4.15 A15 Reserved Reserved 00
Table 142. LPC2458 pin function select register 9 (PINSEL9 - address 0xE002 C024) bit
description
PINSEL9 Pin
name
Function when
00 Function
when 01 Function
when 10 Function
when 11 Reset
value
1:0 P4[16] GPIO Port 4.16 A16 Reserved Reserved 00
3:2 P4[17] GPIO Port 4.17 A17 Reserved Reserved 00
5:4 P4[18] GPIO Port 4.18 A18 Reserved Reserved 00
7:6 P4[19] GPIO Port 4.19 A19 Reserved Reserved 00
9:8 P4[20] Reserved Reserved Reserved Reserved 00
11:10 P4[21] Reserved Reserved Reserved Reserved 00
13:12 P4[22] Reserved Reserved Reserved Reserved 00
15:14 P4[23] Reserved Reserved Reserved Reserved 00
17:16 P4[24] GPIO Port 4.24 OE Reserved Reserved 00
19:18 P4[25] GPIO Port 4.25 WE Reserved Reserved 00