Maxim-integrated MAXQ7667 Manual de usuario descargar pdf (Pagina 106)

__________________________________________________________________________________________________________ 6-12

MAXQ7667 User’s Guide

6.4 Type 2 Counter Registers

6.4.1 Type 2 Timer/Counter Value Register (T2Vx)

egister Description:

ype 2 Timer/Counter Value Register

egister Address:

T2V0:

Module 02h, Index 09h

T2V1: Module 02h, Index 0Dh

T2V2: Module 03h, Index 09h

Bits 15 to 0: Type 2 Timer/Counter Value Register (T2Vx[15:0]).

The T2Vx register is a 16-bit register that holds the current timer value.

When operating in 16-bit mode (T2MD = 0), the full 16 bits are read/write accessible. If the dual 8-bit mode of operation (T2MD = 1) is

selected, the upper byte of T2Vx is inaccessible. T2Vx reads while in the dual 8-bit mode return 00h as the high byte and writes to the

upper byte of T2Vx are blocked. A separate T2Hx register is provided to facilitate high-byte access for dual 8-bit mode.

Note: For convenience, the lower byte of T2Vx (T2Vx[7:0]) is referred to as T2Lx. Unlike T2Hx, there is no separate T2Lx register and

the low byte is always accessed through T2Vx.

Bit #

15 14 13 12 11 10 98

Name T2Vx15 T2Vx14 T2Vx13 T2Vx12 T2Vx11 T2Vx10 T2Vx9 T2Vx8

eset 0 0 0 0 0 0 0 0

ccess rw rw rw rw rw rw rw rw

Bit #

76543210

Name T2Vx7 T2Vx6 T2Vx5 T2Vx4 T2Vx3 T2Vx2 T2Vx1 T2Vx0

Reset 0 0 0 0 0 0 0 0

Access rw rw rw rw rw rw rw rw

r = read, w = write

1 2 ... 101 102 103 104 105 106 107 108 109 110 111 ... 346 347

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Maxim-integrated MAXQ7667 Manual de usuario Pagina 106