NXP Semiconductors LPC24XX UM10237 - Manual (Page 189)

UM10237_4 © NXP B.V. 2009. All rights reserved.
User manual Rev. 04 — 26 August 2009 189 of 792
NXP Semiconductors
UM10237
Chapter 9: LPC24XX Pin connect
5.11 Pin Function Select Register 10 (PINSEL10 - 0xE002 C028)
Only bit 3 of this register is used to control the ETM interface pins.
The value of the RTCK I/O pin is sampled when the external reset is asserted. When
RTCK pin is low during external reset, bit 3 in PINSEL10 is set to enable the ETM
interface pins. When RTCK pin is high during external reset, bit 3 in PINSEL10 is cleared
to disable the ETM interface pins.
The ETM interface control pin can also be modified by the software.
21:20 P4[26] GPIO Port 4.26 BLS0 Reserved Reserved 00
23:22 P4[27] GPIO Port 4.27 BLS1 Reserved Reserved 00
25:24 P4[28] GPIO Port 4.28 Reserved MAT2[0] TXD3 00
27:26 P4[29] GPIO Port 4.29 Reserved MAT2[1] RXD3 00
29:28 P4[30] GPIO Port 4.30 CS0 Reserved Reserved 00
31:30 P4[31] GPIO Port 4.31 CS1 Reserved Reserved 00
Table 143. LPC2420/60/68/70/78 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] GPIO Port 4.20 A20 SDA2 SCK1 00
11:10 P4[21] GPIO Port 4.21 A21 SCL2 SSEL1 00
13:12 P4[22] GPIO Port 4.22 A22 TXD2 MISO1 00
15:14 P4[23] GPIO Port 4.23 A23 RXD2 MOSI1 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
21:20 P4[26] GPIO Port 4.26 BLS0 Reserved Reserved 00
23:22 P4[27] GPIO Port 4.27 BLS1 Reserved Reserved 00
25:24 P4[28] GPIO Port 4.28 BLS2 MAT2[0]/
LCDVD[6]/
LCDVD[10]/
LCDVD[2] TXD3 00
27:26 P4[29] GPIO Port 4.29 BLS3 MAT2[1]/
LCDVD[7]/
LCDVD[11]/
LCDVD[3] RXD3 00
29:28 P4[30] GPIO Port 4.30 CS0 Reserved Reserved 00
31:30 P4[31] GPIO Port 4.31 CS1 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