Z89323 Zilog., Z89323 Datasheet - Page 25

• Manufacturer Part Number: Z89323
• Description: 16-BIT DIGITAL SIGNAL PROCESSORS
• Manufacturer: Zilog.

DS95DSP0101 Q4/95
Bank 13/EXT1 (Timer0) or Bank 14/EXT1 (Timer1)
Timer Control Register (TCTL)
15 14 13 12 11 10
9
8
Figure 15. Register Bit Fields
7
P R E L I M I N A R Y
6
5
4
3
2
1
0
Timer/Counter
Input Select
Input Event
Output Select
Output Invert
Timer Mode
Reserved
Test Mode*
0 Timer/Counter disabled (default)
1 Timer/Counter enabled
00 Inputs have no effect
01 Reserved
10 UI0 Pin
11 UI1 Pin
00 Low Level or Falling Edge
01 High Level or Rising Edge
10 Both Rising and Falling Edges
11 Reserved
00 Outputs Unaffected
01 Reserved
10 Drive UO0 Pin
11 Drive UO1 Pin
0 Output asserted High on Timeout
1 Output asserted Low on Timeout
Timer Output Modes
Timer Input Modes
0 Normal Operation
1 Factory Test Mode
0000 Square Wave
0001 One-Shot
0010 PWM short (8-bit)
0011 PWM long (16-bit)
0100 Pulse Count Output
0101 Triggered Count
0110 S/W Watch-Dog Mode Mode 6
0111 H/W Watch-Dog Mode Mode 7
1000 Gated Count
1001 Period
1010 Pulse Count
1011 Gated Pulse Count
*Note: The user should always
program this bit to be 0.
16-B
IT
D
IGITAL
Mode 2
Mode 1
Mode 4
Mode 0
Mode 3
Mode 5
Mode 8
Mode 9
Mode 11
Mode 10
S
IGNAL
Z89323/373/393
P
ROCESSORS
25