Universal Remote Control R7 - SPECS SHEET User Manual Page 11
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Data Sheet ADP5589
Rev. B | Page 11 of 52
LOGIC EVENT
5678910114321
16 17 18 19 20 21 2215141312
27 28 29 30 31 32 3326252423
38 39 40 41 42 43 4437363534
49 50 51 52 53 54 5548474645
60 61 62 63 64 65 6659585756
71 72 73 74 75 76 7770696867
82 83 84 85 86 87 8881807978
FIFO
UPDATE
KEY SCAN
CONTROL
I/O CONFIGURATION
KEY EVENT
GPI EVENT
I
2
C BUSY?
R0 R3R1 R2 R4 R7R5 R6C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10
COLUMN
SINK ON/OFF
PIN_CONFIG_A[7:0]
PIN_CONFIG_B[7:0]
ROW
SENSE
FIFO
PIN_CONFIG_C[2:0]
UNLOCK1[7:0]
UNLOCK2[7:0]
EXT_LOCK_EVENT[7:0]
UNLOCK_TIMER[2:0]
INT_MASK_TIMER[4:0]
LOCK_EN
LOCK_STAT
EVENT_INT
OVRFLOW_INT
LOCK_INT
EC[4:0]
RESET_TRIGGER_TIME[2:0]
RESET1_EVENT_A[7:0]
RESET1_EVENT_B[7:0]
RESET1_EVENT_C[7:0]
89
91
96
95
94
90
93
92
RESET2_EVENT_A[7:0]
RESET2_EVENT_B[7:0]
RESET 1_INITIATE
RESET 2_INITIATE
09714-010
Figure 11. Detailed Key Scan Block
Use Registers PIN_CONFIG_A[7:0] (0x49),
PIN_CONFIG_B[7:0] (0x4A), and PIN_CONFIG_C[2:0]
(0x4B) to configure I/Os for keypad decoding. The number
label on each key switch represents the event identifier that
is recorded if that switch is pressed. If all row/column pins
are configured, it is possible to observe all 88 key identifiers on
the FIFO.
If a smaller 3 × 3 matrix is configured, for example, using the
C5, C6, and C7 column pins and the R1, R2, and R3 row pins,
only the nine event identifiers (17, 18, 19, 28, 29, 30, 39, 40,
and 41) can possibly be observed on the FIFO, as shown in
Figure 11.
By default, the ADP5589 records key presses and releases on the
FIFO. Figure 12 illustrates what happens when a single key is
pressed and released. Initially, the key scanner is idle. When
Key 32 is pressed, the scanner begins scanning through all
configured row/column pairs. After the scan wait time, the
scanner again scans through all configured row/column pairs
and detects that Key 32 has remained pressed, which sets the
EVENT_INT interrupt. The event counter, EC[4:0], is incre-
mented to 1, EVENT1[7:0] of the FIFO is updated with its event
identifier set to 32, and its Event1_State bit is set to 1, indicating
a press.
KEY 32
KEY 32 PRESS
KEY 32 RELEASE
KEY SCAN
EVENT_INT
EC[4:0]
FIFO
1 2
1
0
0
0
32
32
0
0
09714-011
Figure 12. Press and Release Event
The key scanner continues the scan/wait cycles while the key
remains pressed. If the scanner detects that the key has been
released for two consecutive scan cycles, the event counter
EC[4:0] is incremented to 2, and EVENT2[7:0] of the FIFO is
updated with its event identifier set to 32. Its Event2_State bit is
set to 0, indicating a release. The key scanner goes back to idle
mode because no other keys are pressed.
The EVENT_INT interrupt can be triggered by both press and
release key events. As shown in Figure 13, if Key 32 is pressed,
EVENT_INT is asserted, EC[4:0] is updated, and the FIFO is
updated. During the time that the key is still pressed, it is
possible for the FIFO to be read, the event counter decremented
to 0, and EVENT_INT cleared. When the key is finally released,
EVENT_INT is asserted, the event counter incremented, and
the FIFO updated with the release event information.
- ADP5589 1
- TABLE OF CONTENTS 2
- SPECIFICATIONS 3
- ABSOLUTE MAXIMUM RATINGS 5
- QUICK DEVICE OVERVIEW 7
- 9714-004 7
- DEVICE ENABLE 8
- DEVICE OVERVIEW 8
- EVENT FIFO 9
- KEY SCAN CONTROL 9
- Rev. B 10
- KEY PRESSED 10
- 09714-009 10
- Data Sheet ADP5589 11
- ADP5589 Data Sheet 12
- Key Pad Extension 12
- Ghosting 12
- FIFO Lock/Unlock 12
- GPI Input 15
- REGISTER INTERFACE 19
- REGISTER MAP 21
- ID Register 0x00 23
- INT_STATUS Register 0x01 23
- Status Register 0x02 23
- FIFO_1 Register 0x03 24
- Rev. B 25
- Rev. B 26
- GPI_INT_STAT_A Register 0x13 27
- GPI_INT_STAT_B Register 0x14 27
- GPI_INT_STAT_C Register 0x15 27
- GPI_STATUS_A Register 0x16 28
- GPI_STATUS_B Register 0x17 28
- GPI_STATUS_C Register 0x18 28
- RPULL_CONFIG_A Register 0x19 29
- RPULL_CONFIG_B Register 0x1A 29
- RPULL_CONFIG_C Register 0x1B 30
- RPULL_CONFIG_D Register 0x1C 30
- RPULL_CONFIG_E Register 0x1D 31
- GPI_EVENT_EN_A Register 0x21 32
- GPI_EVENT_EN_B Register 0x22 33
- GPI_EVENT_EN_C Register 0x23 33
- DEBOUNCE_DIS_A Register 0x27 35
- DEBOUNCE_DIS_B Register 0x28 35
- DEBOUNCE_DIS_C Register 0x29 36
- GPO_DATA_OUT_A Register 0x2A 36
- GPO_DATA_OUT_B Register 0x2B 36
- GPO_DATA_OUT_C Register 0x2C 37
- GPO_OUT_MODE_A Register 0x2D 37
- GPO_OUT_MODE_B Register 0x2E 37
- GPO_OUT_MODE_C Register 0x2F 38
- UNLOCK1 Register 0x33 39
- UNLOCK2 Register 0x34 39
- EXT_LOCK_EVENT Register 0x35 39
- UNLOCK_TIMERS Register 0x36 40
- LOCK_CFG Register 0x37 40
- RESET1_EVENT_A Register 0x38 40
- RESET1_EVENT_B Register 0x39 40
- RESET1_EVENT_C Register 0x3A 41
- RESET2_EVENT_A Register 0x3B 41
- RESET2_EVENT_B Register 0x3C 41
- RESET_CFG Register 0x3D 41
- PWM_OFFT_LOW Register 0x3E 42
- PWM_OFFT_HIGH Register 0x3F 42
- PWM_ONT_LOW Register 0x40 42
- PWM_ONT_HIGH Register 0x41 42
- PWM_CFG Register 0x42 42
- CLOCK_DIV_CFG Register 0x43 43
- LOGIC_1_CFG Register 0x44 43
- LOGIC_2_CFG Register 0x45 43
- LOGIC_FF_CFG Register 0x46 44
- POLL_TIME_CFG Register 0x48 44
- PIN_CONFIG_A Register 0x49 45
- PIN_CONFIG_B Register 0x4A 45
- PIN_CONFIG_C Register 0x4B 45
- PIN_CONFIG_D Register 0x4C 46
- GENERAL_CFG_B Register 0x4D 46
- INT_EN Register 0x4E 47
- APPLICATION DIAGRAM 48
- OUTLINE DIMENSIONS 49
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