NXP Semiconductors LPC1768 - Page 830

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User manual Rev. 3 — 20 December 2013 830 of 841
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NXP Semiconductors
UM10360
Chapter 35: Supplementary information
19.8.5 I
2
C Monitor mode control register (I2MMCTRL:
I
2
C0, I2C0MMCTRL - 0x4001 C01C; I
2
C1,
I2C1MMCTRL- 0x4005 C01C; I
2
C2,
I2C2MMCTRL- 0x400A 001C) . . . . . . . . . . . 445
19.8.5.1 Interrupt in Monitor mode . . . . . . . . . . . . . . . 446
19.8.5.2 Loss of arbitration in Monitor mode . . . . . . . 446
19.8.6 I
2
C Data buffer register (I2DATA_BUFFER: I
2
C0,
I2CDATA_BUFFER - 0x4001 C02C; I
2
C1,
I2C1DATA_BUFFER- 0x4005 C02C; I
2
C2,
I2C2DATA_BUFFER- 0x400A 002C) . . . . . . 447
19.8.7 I
2
C Slave Address registers (I2ADR0 to 3: I
2
C0,
I2C0ADR[0, 1, 2, 3]- 0x4001 C0[0C, 20, 24, 28];
I
2
C1, I2C1ADR[0, 1, 2, 3] - address
0x4005 C0[0C, 20, 24, 28]; I
2
C2, I2C2ADR[0, 1, 2,
3] - address 0x400A 00[0C, 20, 24, 28]). . . . 447
19.8.8 I
2
C Mask registers (I2MASK0 to 3: I
2
C0,
I2C0MASK[0, 1, 2, 3] - 0x4001 C0[30, 34, 38, 3C];
I
2
C1, I2C1MASK[0, 1, 2, 3] - address
0x4005 C0[30, 34, 38, 3C]; I
2
C2, I2C2MASK[0, 1,
2, 3] - address 0x400A 00[30, 34, 38, 3C]). . 448
19.8.9 I
2
C SCL HIGH duty cycle register (I2SCLH: I
2
C0,
I2C0SCLH - 0x4001 C010; I
2
C1, I2C1SCLH -
0x4005 C010; I
2
C2, I2C2SCLH - 0x400A
0010) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
19.8.10 I
2
C SCL Low duty cycle register (I2SCLL: I
2
C0 -
I2C0SCLL: 0x4001 C014; I
2
C1 - I2C1SCLL:
0x4005 C014; I
2
C2 - I2C2SCLL: 0x400A
0014) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
19.8.11 Selecting the appropriate I
2
C data rate and duty
cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449
19.9 Details of I
2
C operating modes. . . . . . . . . . . 450
19.9.1 Master Transmitter mode . . . . . . . . . . . . . . . 451
19.9.2 Master Receiver mode . . . . . . . . . . . . . . . . . 453
19.9.3 Slave Receiver mode . . . . . . . . . . . . . . . . . . 455
19.9.4 Slave Transmitter mode . . . . . . . . . . . . . . . . 457
19.9.5 Detailed state tables . . . . . . . . . . . . . . . . . . . 458
19.9.6 Miscellaneous states . . . . . . . . . . . . . . . . . . 463
19.9.6.1 I2STAT = 0xF8 . . . . . . . . . . . . . . . . . . . . . . . 463
19.9.6.2 I2STAT = 0x00 . . . . . . . . . . . . . . . . . . . . . . . 463
19.9.7 Some special cases . . . . . . . . . . . . . . . . . . . 463
19.9.7.1 Simultaneous repeated START conditions from
two masters . . . . . . . . . . . . . . . . . . . . . . . . . 463
19.9.7.2 Data transfer after loss of arbitration . . . . . . 464
19.9.7.3 Forced access to the I
2
C-bus . . . . . . . . . . . . 464
19.9.7.4 I
2
C-bus obstructed by a LOW level on SCL or
SDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464
19.9.7.5 Bus error . . . . . . . . . . . . . . . . . . . . . . . . . . . 464
19.9.8 I
2
C state service routines. . . . . . . . . . . . . . . 466
19.9.8.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . 466
19.9.8.2 I
2
C interrupt service . . . . . . . . . . . . . . . . . . . 466
19.9.8.3 The state service routines . . . . . . . . . . . . . . 466
19.9.8.4 Adapting state services to an application. . . 466
19.10 Software example . . . . . . . . . . . . . . . . . . . . . 467
19.10.1 Initialization routine . . . . . . . . . . . . . . . . . . . 467
19.10.2 Start Master Transmit function. . . . . . . . . . . 467
19.10.3 Start Master Receive function . . . . . . . . . . . 467
19.10.4 I
2
C interrupt routine . . . . . . . . . . . . . . . . . . . 467
19.10.5 Non mode specific states. . . . . . . . . . . . . . . 467
19.10.5.1 State: 0x00. . . . . . . . . . . . . . . . . . . . . . . . . . 467
19.10.5.2 Master States. . . . . . . . . . . . . . . . . . . . . . . . 468
19.10.5.3 State: 0x08. . . . . . . . . . . . . . . . . . . . . . . . . . 468
19.10.5.4 State: 0x10. . . . . . . . . . . . . . . . . . . . . . . . . . 468
19.10.6 Master Transmitter states . . . . . . . . . . . . . . 468
19.10.6.1 State: 0x18. . . . . . . . . . . . . . . . . . . . . . . . . . 468
19.10.6.2 State: 0x20. . . . . . . . . . . . . . . . . . . . . . . . . . 469
19.10.6.3 State: 0x28. . . . . . . . . . . . . . . . . . . . . . . . . . 469
19.10.6.4 State: 0x30. . . . . . . . . . . . . . . . . . . . . . . . . . 469
19.10.6.5 State: 0x38. . . . . . . . . . . . . . . . . . . . . . . . . . 469
19.10.7 Master Receive states . . . . . . . . . . . . . . . . . 469
19.10.7.1 State: 0x40. . . . . . . . . . . . . . . . . . . . . . . . . . 469
19.10.7.2 State: 0x48. . . . . . . . . . . . . . . . . . . . . . . . . . 470
19.10.7.3 State: 0x50. . . . . . . . . . . . . . . . . . . . . . . . . . 470
19.10.7.4 State: 0x58. . . . . . . . . . . . . . . . . . . . . . . . . . 470
19.10.8 Slave Receiver states . . . . . . . . . . . . . . . . . 470
19.10.8.1 State: 0x60. . . . . . . . . . . . . . . . . . . . . . . . . . 470
19.10.8.2 State: 0x68. . . . . . . . . . . . . . . . . . . . . . . . . . 471
19.10.8.3 State: 0x70. . . . . . . . . . . . . . . . . . . . . . . . . . 471
19.10.8.4 State: 0x78. . . . . . . . . . . . . . . . . . . . . . . . . . 471
19.10.8.5 State: 0x80. . . . . . . . . . . . . . . . . . . . . . . . . . 471
19.10.8.6 State: 0x88. . . . . . . . . . . . . . . . . . . . . . . . . . 472
19.10.8.7 State: 0x90. . . . . . . . . . . . . . . . . . . . . . . . . . 472
19.10.8.8 State: 0x98. . . . . . . . . . . . . . . . . . . . . . . . . . 472
19.10.8.9 State: 0xA0. . . . . . . . . . . . . . . . . . . . . . . . . . 472
19.10.9 Slave Transmitter states . . . . . . . . . . . . . . . 472
19.10.9.1 State: 0xA8. . . . . . . . . . . . . . . . . . . . . . . . . . 472
19.10.9.2 State: 0xB0. . . . . . . . . . . . . . . . . . . . . . . . . . 473
19.10.9.3 State: 0xB8. . . . . . . . . . . . . . . . . . . . . . . . . . 473
19.10.9.4 State: 0xC0 . . . . . . . . . . . . . . . . . . . . . . . . . 473
19.10.9.5 State: 0xC8 . . . . . . . . . . . . . . . . . . . . . . . . . 473
Chapter 20: LPC176x/5x I2S
20.1 Basic configuration . . . . . . . . . . . . . . . . . . . . 474
20.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474
20.3 Description . . . . . . . . . . . . . . . . . . . . . . . . . . 475
20.4 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . 476