Control Bank Registers; Table 23-22. Sample Entries For Control Bank - Sharp Blue Treak LH75400 User Manual

LH75400/01/10/11 (Preliminary) User's Guide

23.3.2.11 Control Bank Registers

The Control Bank is a set of 32 16-bit registers. HWCTRLBx and LWCTRLBx are used
together and follow the format of the HW and LW Registers (see Section 23.3.2.1 and
Section 23.3.2.2).
HWCTRLBx0 contains 16 bits of data for the 4WX conversion. The remaining 14 bits of
data for the Control Bank Register conversion is at Tag number LWCBx0. Bits [15] and
[14] of the low words are read as zero.
The same logic is used for the Control Bank Registers HWCBx and LWCBx. The High
Word Registers should contain the:
• Settling time
• In+ bits
• In- bits
• Ref+ bits.
The Low Word Registers should contain the:
• Bias control settings
• Ref- bits.
For internal access into the control bank, the data writes to the registers from the APB data
bus. Each entry is a 16-bit register, with its own address space.
TAG TYPE

Table 23-22. Sample Entries for Control Bank

TAG NAME
4WX HWCBx0
4WY HWCBx1
HWCBx2 ... HWCBx15
4WX LWCBx0
4WY LWCBx1
LWCBx2 ... LWCBx15
Analog-to-Digital Converter/Brownout Detector
Settling Time[15:7] In+ [6:3]
Settling Time[15:7] In+ [6:3]
Bias control[13:2]
Bias Control[13:2]
6/25/03
CONTENTS
In- [2] Ref+ [1:0]
In- [2] Ref+ [1:0]
Ref- [1:0]
Ref- [1:0]
23-21